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Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens

B&H # PEC22525KP Mfr # C22525KP
No Longer Available
Product Highlights
  • Manual Focus
  • Locking Screws

The Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens is a 25mm lens for use with 1" CCTV cameras in security and machine vision applications. Advanced optical elements are incorporated to ensure all-around image sharpness and efficient light conductivity. Its iris can be manually adjusted according to available light levels. A durable construction ensures long-term dependable performance in a variety of industrial operating environments.

Imager Size 1"
Mount Type C
Focal Length 25mm
Aperture f/1.4-22
Iris Operation Manual
Focus Operation Manual
Angle of View 1/4": 8.23
1/3": 10.97
1/2": 14.62
2/3": 20.10
1": 36.79
Minimum Object Distance (M.O.D.) 30cm
Filter Size 27mm
Diameter and Length 1.7 x 2" (42 x 50mm)
Weight 4.8 oz (135 g)
Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens
  • 1-Year Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    PentaxC22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens
     
    4.5

    (based on 25 reviews)

    Ratings Distribution

    • 5 Stars

       

      (16)

    • 4 Stars

       

      (6)

    • 3 Stars

       

      (3)

    • 2 Stars

       

      (0)

    • 1 Stars

       

      (0)

    91%

    of respondents would recommend this to a friend.

    Pros

    • Compact (12)
    • Easy to use (10)
    • Lightweight (7)
    • Strong construction (7)
    • Durable (5)

    Cons

      Best Uses

      • Shooting indoors (7)
      • Shooting outdoors (7)
      • Low light (6)
      • Video (6)
      • Close up filming (4)
        • Reviewer Profile:
        • Tech savvy (6), Photo enthusiast (5), Film professional (3), Pro photographer (3)
        • Was this a gift?:
        • No (16)

      Most Liked Positive Review

       

      Good M4/3 Lens

      I use this lens on my M4/3 camera body with an adapter, so my review is directed toward that application. The Pentax lens works better than expected. True enough, there is some...Read complete review

      I use this lens on my M4/3 camera body with an adapter, so my review is directed toward that application. The Pentax lens works better than expected. True enough, there is some vignetting in the corners, though fairly minor when shooting in 3:2 aspect ratio (which is what I mostly shoot at with this lens mounted). The vignetting is functionally a non-issue if shooting wide-screen HD video, but I'd be lying if I said it wasn't there.

      The lens is great as a low light normal with varied uses. Wide open, it can be used as an effects lens to evoke a "toy camera" kind of look. Stopping down to f/2, it sharpens up noticeably, but still gives your photos and interesting feel. Stopped down to 4 or 5.6 and it's fairly sharp through most of the frame, though you'll still notice some peripheral defocus, especially toward the corners. At these middle f/stops, it's capable of resolving detail to a surprisingly satisfactory degree. Of course, it doesn't resolve quite as much at the pixel level as an actual made for M4/3 lens or an adapted M-mount lens, but it's good for everyday shooting, general street photography, or low-light endeavors.

      For my money, where the lens is especially good is in shooting HD video, this if you're looking for a manageable manual focus lens to pull or throw focus. This is at least half of what I was hoping for when I purchased this lens.

      Watch out for the tiny screws. They're easy to lose. I'd recommend taking them out. For special use, you can keep on hand one of the larger thumb screws (these come with the lens) for shooting video and desiring to pull or throw focus.

      VS

      Most Liked Negative Review

       

      A novelty lens, at best.

      Here are my observations after using this lens on a GH1 for the last few months.

      It's beautifully made for such a compact lens. The focus and aperture rings are...Read complete review

      Here are my observations after using this lens on a GH1 for the last few months.

      It's beautifully made for such a compact lens. The focus and aperture rings are smooth to use.

      When it comes to actually filming something it goes downhill.
      The lens is so soft anywhere but the centre of the image that it becomes almost useless.
      The bokeh is also very ugly and distracting.

      Oddly, vignetting seems to become worse as you stop down.

      One thing to be careful with is pulling focus. The lens screws into the mount adapter and given the strongly dampened focus ring can lead it the entire lens unscrewing itself in the middle of a take.

      This is an interesting lens, but you'd be mad to try and use it for a shooting a serious film. The lens simply can't produce images of high enough quality.

      That said, I do intend to hang on to it. Like a Lensbaby is pretty much an effects lens, and as such could be useful under some circumstances, possibly music videos or something heavily stylised.
      Just don't go expecting it to be useful for shooting a high quality indie drama on a budget. This ain't no Zeiss.

      It would get 2.5 stars from me if that were an option. Given the low cost I'll give it 3, because I'm nice like that.

      Reviewed by 25 customers

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      4.0

      Money saver

      By Electro-Optical Engineer

      from NorthWest Oregon

      Verified Buyer

      Pros

        Cons

          Best Uses

            Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

            I tried this lens on a cs-mount camera with a cs to c-mount adapter. I couldn't get the back focal length correct for a focused image unless the aperture was reduced to an f/11 or more.

            I'm sure it is a great lens as I have always liked these small Pentax lenses.

            • Was this a gift?:
            • No

            Share this review

            (5 of 6 customers found this review helpful)

             
            3.0

            A novelty lens, at best.

            By Richy

            from Dublin, Ireland

            About Me Pro Photographer

            Verified Reviewer

            Pros

            • Lightweight
            • Strong Construction

            Cons

              Best Uses

                Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                Here are my observations after using this lens on a GH1 for the last few months.

                It's beautifully made for such a compact lens. The focus and aperture rings are smooth to use.

                When it comes to actually filming something it goes downhill.
                The lens is so soft anywhere but the centre of the image that it becomes almost useless.
                The bokeh is also very ugly and distracting.

                Oddly, vignetting seems to become worse as you stop down.

                One thing to be careful with is pulling focus. The lens screws into the mount adapter and given the strongly dampened focus ring can lead it the entire lens unscrewing itself in the middle of a take.

                This is an interesting lens, but you'd be mad to try and use it for a shooting a serious film. The lens simply can't produce images of high enough quality.

                That said, I do intend to hang on to it. Like a Lensbaby is pretty much an effects lens, and as such could be useful under some circumstances, possibly music videos or something heavily stylised.
                Just don't go expecting it to be useful for shooting a high quality indie drama on a budget. This ain't no Zeiss.

                It would get 2.5 stars from me if that were an option. Given the low cost I'll give it 3, because I'm nice like that.

                • Was this a gift?:
                • No

                Share this review

                (0 of 2 customers found this review helpful)

                 
                4.0

                Works on 16mm

                By Tinytim267

                from Los Angeles, CA

                About Me Photo Enthusiast

                Pros

                • Consistent Output
                • Durable
                • Easily Interchangeable
                • Lightweight
                • Nice Bokeh

                Cons

                  Best Uses

                  • Indoors/Low Light
                  • Landscape/Scenery
                  • Macro Photography
                  • Night Photography
                  • Sports/Action
                  • Video
                  • Weddings/Events
                  • Wildlife Photos

                  Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                  Will work on 16mm cameras, like the Bolex, although less than ideal focus throw compared to Switars. Nice-priced and sharp lens for the last few of us shooting 16mm film. Original lenses have been priced out of reach by silly wanna-be's trying to buy their way out of the creative abyss that is digital photography.

                  • Was this a gift?:
                  • No

                  Share this review

                  (1 of 1 customers found this review helpful)

                   
                  3.0

                  Cheap f1.4 at 50mm on GF3

                  By Waldo

                  from Sand Springs, Ok

                  About Me Photo Enthusiast

                  Verified Buyer

                  Pros

                  • It's a cheap lens

                  Cons

                  • It's a cheap lens

                  Best Uses

                  • Defocus backgrounds
                  • Landscape/Scenery

                  Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                  The widest I have tested this lens is at f4.0 and there is not a lot of edge sharpness there. It is a fun lens on M43 but I'm going to go for the 20mm 1.7 for IQ and ease of use.

                  • Was this a gift?:
                  • No

                  Share this review

                   
                  5.0

                  Great Little Lens!

                  By Bryce the Video Guy

                  from Mooresville, NC

                  About Me Pro Photographer

                  Verified Buyer

                  Pros

                  • Inexpensive
                  • Lightweight
                  • Nice Bokeh
                  • Strong Construction

                  Cons

                    Best Uses

                    • Video
                    • Weddings/Events

                    Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                    I use this lens with my Panny GH2. First off the lens is absolutely adorable. It's so small and looks nearly out of place mounted on the GH2. You get about 98% coverage of the sensor. Slight fringing on the edges. Other than that the lens is quite sharp, even wide open. The focus and aperture rings are buttery smooth. It's my go-to lens for now. You can't beat it at its price range.

                    The only downside is it has an awkward filter thread size. Lens cap says 29mm. Can't find filters at that size.

                    • Was this a gift?:
                    • No

                    Share this review

                     
                    5.0

                    super lens!

                    By Marc

                    from Nevada city, Ca

                    About Me Photo Enthusiast

                    Verified Buyer

                    Pros

                    • Durable
                    • Great for Video
                    • Lightweight
                    • Nice Bokeh
                    • Strong Construction

                    Cons

                    • NONE

                    Best Uses

                    • Indoors/Low Light
                    • Landscape/Scenery
                    • Video

                    Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                    I love this lens.... its just so small, fits great with an adapter on my gf1, looks awesome, and is very good price for the quality, but best of all, it fully covers the whole sensor on my gf1! its just an awesome little lens! Give it up to B&H for making this available!... Thanks!

                    • Was this a gift?:
                    • No

                    Share this review

                     
                    5.0

                    Great wide lens!

                    By Sebby

                    from Braintree, MA

                    About Me Casual Photographer

                    Verified Buyer

                    Pros

                    • Easily Interchangeable
                    • Lightweight
                    • Strong Construction

                    Cons

                      Best Uses

                      • Indoors/Low Light
                      • Video
                      • Wildlife Photos

                      Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                      I use this lens on my Lumix GH1 and love the sharpness. It does vignette a bit in the corners but I kind of like this look. I want to get a thinner adapter since the one I use is a bit close to the focusing ring but still works great.

                      • Was this a gift?:
                      • No

                      Share this review

                      (0 of 1 customers found this review helpful)

                       
                      5.0

                      Very good for the price

                      By phelix

                      from Batavia, IL

                      About Me Photo Enthusiast

                      Verified Buyer

                      Pros

                      • Durable
                      • Easily Interchangeable
                      • Fast / accurate auto-focus
                      • Rugged
                      • Strong Construction

                      Cons

                        Best Uses

                        • Indoors/Low Light
                        • Night Photography
                        • Video

                        Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                        This is a very good lens if you consider the super bright aperture and low price. It will give you some dark corner (not a lot, depending on the distance of focus and aperture.) The center is super sharp, which is quite surprising. To the corner the IQ goes down and it is quite blur at corner. Which is not a big deal if you put your main object in the center, and in fact sometimes helps your main object to pop out.

                        Mannual focus is not hard at all. This is my first mannual lens and it is very easy to go with. If you want to try muannual or need very shallow DOV of want some bright lens for night/indoor, this is a very good choice.

                        Do not forget the price. It is sure far from perfect but totally worth the price.

                        • Was this a gift?:
                        • Yes

                        Share this review

                         
                        5.0

                        Great, compact c mount lens.

                        By cinemasteve87

                        from San Jose, CA

                        About Me Pro Photographer

                        Pros

                        • Consistent Output
                        • Durable
                        • Easily Interchangeable
                        • Lightweight
                        • Nice Bokeh
                        • Rugged
                        • Strong Construction

                        Cons

                          Best Uses

                          • Indoors/Low Light
                          • Night Photography
                          • Video

                          Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                          This is a really tiny and fun lens to use. Very bright/fast in low light at f1.4 and nice sharp image in the center of the frame. It has a unique look to it with a swirley bokeh and minor vignetting if this was adapted to a Micro 4/3 camera like my Panasonic GH2, or to Sony NEX systems. Just get a cheap c mount adapter and you'll be able to use many other fast and cheap c mount lenses. Technically, the lens is not ideal, however, this lens has a pleasant and amazing artistic look to it's image output.

                          Don't let the "Assembled in Vietnam" label sway you away from this tiny and powerful lens. Pentax did an excellent job in building a small but solid piece of glass. For the price, you cannot not beat this lens value for how fast and lightweight it is. Start investing more into cheap and quality c mount lenses and you will not regret it!

                          • Was this a gift?:
                          • No

                          Share this review

                          (1 of 1 customers found this review helpful)

                           
                          5.0

                          Crisp Center, artsy vignetting on APS-C

                          By Jay

                          from Aliso Viejo, CA

                          About Me Avid Do-It-Yourselfer

                          Verified Buyer

                          Pros

                          • Compact
                          • Easy To Set Up

                          Cons

                          • None

                          Best Uses

                          • Photos

                          Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                          I have this lens on my Sony NEX 3 (with adapter) and it is a blast to shoot with. Vignettes heavily in the corners but I bought it for that purpose. It is amazingly crisp in the center and has interesting bokeh. I'd definitely recommend this lens for getting creative.

                          • Primary use:
                          • Personal

                          Share this review

                          (2 of 2 customers found this review helpful)

                           
                          5.0

                          Good M4/3 Lens

                          By Russell

                          from Oregon

                          About Me Aspiring Film Maker, enthusiast photographer

                          Verified Buyer

                          Pros

                          • Adaptable to M43
                          • Compact Design
                          • Easy To Use

                          Cons

                            Best Uses

                            • Effects Lens
                            • Low-Light Photography
                            • Shooting Indoors
                            • Shooting Outdoors
                            • Video Shooting

                            Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                            I use this lens on my M4/3 camera body with an adapter, so my review is directed toward that application. The Pentax lens works better than expected. True enough, there is some vignetting in the corners, though fairly minor when shooting in 3:2 aspect ratio (which is what I mostly shoot at with this lens mounted). The vignetting is functionally a non-issue if shooting wide-screen HD video, but I'd be lying if I said it wasn't there.

                            The lens is great as a low light normal with varied uses. Wide open, it can be used as an effects lens to evoke a "toy camera" kind of look. Stopping down to f/2, it sharpens up noticeably, but still gives your photos and interesting feel. Stopped down to 4 or 5.6 and it's fairly sharp through most of the frame, though you'll still notice some peripheral defocus, especially toward the corners. At these middle f/stops, it's capable of resolving detail to a surprisingly satisfactory degree. Of course, it doesn't resolve quite as much at the pixel level as an actual made for M4/3 lens or an adapted M-mount lens, but it's good for everyday shooting, general street photography, or low-light endeavors.

                            For my money, where the lens is especially good is in shooting HD video, this if you're looking for a manageable manual focus lens to pull or throw focus. This is at least half of what I was hoping for when I purchased this lens.

                            Watch out for the tiny screws. They're easy to lose. I'd recommend taking them out. For special use, you can keep on hand one of the larger thumb screws (these come with the lens) for shooting video and desiring to pull or throw focus.

                            • Was this a gift?:
                            • No

                            Share this review

                             
                            4.0

                            A Fun Lens for Micro Four Thirds Shooter

                            By Burcules

                            from Jersey City, NJ

                            About Me Tech Savvy

                            Verified Buyer

                            Pros

                            • Compact Design

                            Cons

                              Best Uses

                              • Close Up Filming
                              • Shooting Indoors

                              Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                              This lens is a blast to use on a MFT camera. It works great in low light and is especially a bargain at [$]. [...]. I recommend the Fotodiox adapter for use with MFT cameras. I had to remove a little silver screw in the adapter to allow it to fit and since then it's great.

                              • Was this a gift?:
                              • No

                              Share this review

                               
                              5.0

                              Best lens in my bag

                              By Jake Tison

                              from San Diego, CA

                              About Me Film Professional

                              Verified Buyer

                              Pros

                              • Compact Design
                              • Easy To Use
                              • Improves Picture Quality
                              • Interfaces Well With Camcorder

                              Cons

                                Best Uses

                                  Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                                  I recently shot a documentary using the GH1 and this lens with a c mount adapter. One of the best lenses I have in my bag. It's small and takes some getting used to, but the results have been incredible. Buy this lens and see the world with a different eye.

                                  • Was this a gift?:
                                  • No

                                  Share this review

                                   
                                  5.0

                                  A lens full of fun!!

                                  By K'son

                                  from HK

                                  About Me Starter Only

                                  Verified Buyer

                                  Pros

                                    Cons

                                    • Still some black corner

                                    Best Uses

                                    • Shooting Outdoors

                                    Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                                    I use the lens on my M4/3 mirrorless DC
                                    with a C-mount for conversion.
                                    The effect is very good and the photo quality is
                                    even better than my expectation!!
                                    It's a funny way of using a CCTV lens~

                                    • Was this a gift?:
                                    • No

                                    Share this review

                                     
                                    5.0

                                    Works well on multiple cameras

                                    By Bricoleur

                                    from Columbia, MO

                                    About Me Bricoleur

                                    Verified Buyer

                                    Pros

                                    • Easy To Use
                                    • Versatile

                                    Cons

                                    • Opimized for larger chip

                                    Best Uses

                                    • Camera testing

                                    Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                                    Versatile! I have tried it on all of the cameras that we use in our research laboratory. Excellent piece of equipment and good value for your money.Optimized for a 1-inch chip camera and can be "too much" for the 1/4" chip cameras.

                                    • Was this a gift?:
                                    • No

                                    Share this review

                                     
                                    5.0

                                    Works great with the EP-1

                                    By DFann

                                    from Kansas City, Mo.

                                    About Me Film Professional

                                    Verified Buyer

                                    Pros

                                    • Compact Design
                                    • Easy To Use
                                    • Improves Picture Quality

                                    Cons

                                      Best Uses

                                      • Shooting Outdoors

                                      Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                                      I bought this lens to use with the olympus EP-1. Works perfect (with an adapter).

                                      • Was this a gift?:
                                      • No

                                      Share this review

                                       
                                      4.0

                                      Small, Sharp and good built!

                                      By LP

                                      from Singapore

                                      About Me Tech Savvy

                                      Verified Buyer

                                      Pros

                                      • Compact Design
                                      • Easy To Use

                                      Cons

                                        Best Uses

                                          Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                                          Likes:
                                          Small, Light weight, good built even though it's small
                                          Slight Vignet - i use on micro 43 Olympus camera with an adaptor, as the lens does not cover the full sensor, so there's a slight vignet which gives a "pinhole" effect which I like it at times.
                                          Dislike:
                                          Not much to dislike about except that the warranty is not international as I'm not local.

                                          • Was this a gift?:
                                          • No

                                          Share this review

                                           
                                          5.0

                                          good low light normal lens for micro 4/3

                                          By David Tolpin

                                          from Beer Sheva, Israel

                                          About Me Amateur Photographer

                                          Verified Buyer

                                          Pros

                                          • Beatuiful bokeh
                                          • Compact Design
                                          • Easy To Use
                                          • Improves Picture Quality

                                          Cons

                                            Best Uses

                                            • Low light photography
                                            • Shooting Indoors
                                            • Shooting Outdoors

                                            Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                                            I use this lens on Olympus E-P1 as a low light lens to shoot in clubs or in streets at night. The lens performs exceptionally well wide open, and closing it a bit allows to flexibly control the DOF. I am an old-fashioned amateur photographer and prefer manual focus. I'd love to have click stops in the aperture ring, but this is not a big issue.

                                            • Was this a gift?:
                                            • No

                                            Share this review

                                            (0 of 3 customers found this review helpful)

                                             
                                            3.0

                                            Still and video

                                            By Cinemalog

                                            from Los Angeles

                                            About Me Aspiring Film Maker

                                            Verified Buyer

                                            Pros

                                            • Compact Design
                                            • Easy To Use

                                            Cons

                                            • No focus ring

                                            Best Uses

                                            • Close Up Filming
                                            • Low Light
                                            • Shooting Indoors
                                            • Shooting Outdoors

                                            Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                                            Nice lens albeit tiny. No focus for video, great for stills as a cheap micro 4/3 lens. I would give it four stars if it had a focus ring. All in all, this is a nice toy to play with. I would love to see it work on a HOLGA!

                                            Share this review

                                             
                                            5.0

                                            Ultimate Lens

                                            By Gekopaca

                                            from Arles, France

                                            About Me Film Professional

                                            Verified Buyer

                                            Pros

                                            • Compact Design
                                            • Easy To Use
                                            • Improves Picture Quality

                                            Cons

                                              Best Uses

                                              • Shooting Indoors
                                              • Shooting Outdoors

                                              Comments about Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens:

                                              I use it with a Panasonic Lumix GH1 camera (pictures and movies) with a specific adapter (bought on the Bay).
                                              It's a very tiny and sharp lens, very fast (f1.4!) with hard few vignetting.
                                              I think I will buy the 50mm as soon it will be in stock.

                                              Share this review

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