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

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

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

B&H # PEC22525KP MFR # C22525KP
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Product Highlights

  • Manual Focus
  • Locking Screws

Pentax C22525KP overview

  • 1Description

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.

In the Box
Pentax C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens
  • 1-Year Warranty
  • Table of Contents
    • 1Description

    Pentax C22525KP specs

    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)
    Packaging Info
    Box Dimensions (LxWxH) 2.4 x 1.8 x 1.8"

    Pentax C22525KP reviews

    C22525KP 1" C Mount 25mm f/1.4 Manual Iris Lens is rated 4.5 out of 5 by 25.
    Rated 5 out of 5 by from Big picture in tiny package. I bought the lens to used on an Olympus E-PL1 with a C to m4/3s adaptor. Got it primarily to use as a low light and video lens and for both purposes, it performed beautifully. Large aperture with a nice smooth bokeh and the focusing is so smooth, it's a dream to use when shooting videos. There are finger screws supplied that allow you lock the aperture or focus to prevent accidental adjustments too. Very nifty. Downside is that those same screws when loosened to allow adjustments are quite loose and you have to take care to not have them fall out. Also, on a m4/3 camera, there is a small amount of vignetting, it's not a big deal for me but if you're particular about it then do take note.
    Date published: 2010-07-13
    Rated 4 out of 5 by from inexpensive f1.4 lens I use this lens with a micro four thirds camera with a C mount to m43 adapter. It has slight vignetting with all aspect ratios, some more than others. The image quality is pretty good except for the extreme edges where it gets noticeably soft. Requires manual focusing and aperture adjustment. But it's a fun lens for those who like to experiment with less than perfect lens quality and who would like to simulate a Holga type effect with their digital camera. The bonus being this is also an f1.4 lens , good for low light shooting and narrow depth of field effects.
    Date published: 2010-07-22
    Rated 3 out of 5 by from 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 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.
    Date published: 2012-02-09
    Rated 5 out of 5 by from Very good for the price 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.
    Date published: 2011-07-19
    Rated 5 out of 5 by from 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 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.
    Date published: 2011-01-30
    Rated 5 out of 5 by from Great Little 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.
    Date published: 2011-09-05
    Rated 5 out of 5 by from Crisp Center, artsy vignetting on APS-C 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.
    Date published: 2011-03-02
    Rated 3 out of 5 by from Cheap f1.4 at 50mm on GF3 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.
    Date published: 2011-09-17
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