Sigma 30mm f/1.4 EX DC Autofocus Lens for Pentax Digital

Sigma Normal 30mm f/1.4 EX DC Autofocus Lens for Pentax Digital SLR Cameras

Sigma Normal 30mm f/1.4 EX DC Autofocus Lens for Pentax Digital SLR Cameras

B&H # SI3014DCPAF MFR # 300109
No Longer Available

Sigma 300109 overview

  • 1Description

The Sigma 30mm f/1.4 EX DC is a large aperture lens that provides a standard angle most similar to the human eye. The 30mm focal length translates to approximately 50mm in 35mm format(*).

A glass mold aspherical lens element at the rear group of the lens reduces color aberration and provides high-quality image results. From 15.7" (40 cm) minimum focusing distance to infinity, this lens creates very sharp images with high contrast, and can perform superbly in a great range of applications, including snapshots, portraiture, indoor shooting and landscape photography.

DC lenses are exclusively designed for digital SLR cameras. The image circle (rear of lens) is made to match the smaller dimensions used for the image sensor on digital cameras. As a result these lenses are also more compact and lightweight, and are better matched to digital SLR cameras.

Note: (*) Not suitable for 35mm film SLR cameras.

EX lens series denotes excellence of engineering and new technology
Correction for various types of aberration provided by two SLD (Special Low Dispersion) glass element and a hybrid aspherical lenses
In the Box
Sigma Normal 30mm f/1.4 EX DC Autofocus Lens for Pentax Digital SLR Cameras
  • Front & Rear Lens Caps
  • Lens Hood
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Sigma 300109 specs

    Focal Length 30mm
    Aperture Maximum: f/1.4
    Minimum: f/16
    Camera Mount Type Pentax K
    Format Compatibility Pentax Digital (APS-C)
    Angle of View 45°
    Minimum Focus Distance 1.31' / 40 cm
    Magnification 0.09x
    Maximum Reproduction Ratio 1:10
    Optical Design 7 Elements in 7 Groups
    Diaphragm Blades 8
    Image Stabilization No
    Autofocus Yes
    Tripod Collar No
    Filter Thread 62 mm
    Dimensions (DxL) 3.2 x 2.3" / 8.13 x 5.84 cm
    Weight 15.17 oz / 430 g
    Packaging Info
    Box Dimensions (LxWxH) 5.6 x 4.7 x 4.9"

    Sigma 300109 reviews

    30mm f/1.4 EX DC Autofocus Lens for Pentax Digital is rated 4.4 out of 5 by 22.
    Rated 5 out of 5 by from Fast, Big Patina DSLR Pentax Lens I use this lens anytime I am shooting indoors w/flash for perfect high-patina portraits. I also find it's invaluable outdoors whenever I need high-contrast for landscapes. Not for amateurs, I recommend this 30mm Pentax DSLR-compatible normal lens for photographers who understand composition and depth of field. If you don't like moving around and getting the best angle, this is not for you. Those with a creative streak will find it ideal for any low-light situation, not to mention its ability to make high contrast shots out of something otherwise plain, and simple. Experimentation with this lens often yields perfection when you least expect it.
    Date published: 2009-07-30
    Rated 5 out of 5 by from Sigma 30mm f/1.4 - Pentax I was using the Pentax FA35 f/2 - which is a great lens, but wasn't quite wide enough for my tastes and didn't have a pleasing bokeh/blur. I've since replaced the FA35 with the Sigma 30. I almost exclusive shoot people - and this lens is perfect for people. OK at f/1.4, and sharp/usable from f/1.6 this lens focuses quickly, is weighted nicely and offers Sigma's typical pleasing warm tones. Construction quality is very good. Bokeh is rounded in the centre of the frame and becomes more triangular as you approach the corners. Centre sharpness is razor sharp, however corner sharpness is much more subdued. Perfect for shooting people. The only thing I don't particularly like about the lens is how the hood attaches - it's a bit finicky. Lens cap has edge and inner pincers though, so you can keep the hood on while removing, or putting cap on. Excellent lens - couldn't be happier with my purchase!
    Date published: 2009-09-29
    Rated 4 out of 5 by from Great lens, but noisy This is a great lens for low-light shooting, but it is noisy. The auto focus sounds like a small electric drill. When I twisted this thing on, the first thing I noticed was the sound. Small focus adjustments aren't bad, but moving 3 ft. to 20 ft. produces a noticeable squeal. Having said that, I love the results. The low-light performance on my K-5 is outstanding. Autofocus is fast and accurate. I would buy this lens again.
    Date published: 2011-12-10
    Rated 4 out of 5 by from Wonderful All-Rounder Pros: Awesome lens. In good to decent light, sharp and snappy AF. A 30mm f/1.4 on an crop center hits a pretty decent sweet spot. Relatively sharp (although not across the frame.) Decent MF feel, especially for a modern third party AF lens. Cons: In low light, it remains difficult to focus by any means, MF or AF. Occasionally misses focus completely, even with focus confirmation by the camera. The focus problems may also stem from the K200d's poor autofocus system. It's a beefy lens and slightly heavy, but when it works, it works and is definitely worth it.
    Date published: 2010-05-31
    Rated 4 out of 5 by from A Must Have Lens This is an excellent Fast Lens. I read all the B&H reviews and chose this because it's the fastest lens available, and is a good value. I'm not much of an in depth reviewer.. but I shoot all the time and love this Lens! The only thing I don't like about it is that it doesn't coordinate with my Pentax 540 GZ Flash.. meaning I have to set the exposure manually which is kind of a drag. The kit lens I got with my KX syncs up great with the Flash and that makes for very easy event photography. Then again it only takes a minute to find a good exposure for your environment, but you know what I mean. It's worth knocking a star off for that. I am VERY happy with this lens.It is a must have for anyone shooting can see my work at @Have fun out there !
    Date published: 2010-08-17
    Rated 4 out of 5 by from Nice glass but a flawed lens This lens has been on my wish list for a while now because its fast and reasonably wide. But I was hesitant because of its lack of HSM (no quickshift either). When the price dropped to $$ I couldn't say no. The glass is very sharp. I love the field of view. The wide aperture sucks up light. I'm very pleased with the colors. However, the lack of HSM and quickshift are dissapointing. And if you like bokeh, you might be dissapointed as well. The corners end up with strange triangular bokeh instead of circular. All in all, though, the glass is very nice, but the lens as a whole is flawed. For the price, its hard to beat.
    Date published: 2013-02-17
    Rated 5 out of 5 by from A nice fast lens. I use this lens when it's an overcast day. at dusk or dawn or anytime I need a fast normal lens. The only down side is it's twice the size of my 50mm 1.7 lens.
    Date published: 2008-07-07
    Rated 5 out of 5 by from Excellent Lens I've been using this lens for several weeks on a K-7 and have had none of the focus problems that have been reported in the past. It's a good, solid, fast prime in the classic sense. Bokeh is stunning. Overall operation is quite smooth. Feels like the classic Canon 50mm f/1.4 FD that I used for so long. Colors are slightly warm and the overall image has a crisp contrast. My only wish is that it had the auto/manual focus switch and auto focus manual overide like its big brother 50mm has. Still give it five stars though.
    Date published: 2011-06-05
    • y_2018, m_12, d_4, h_18
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.9
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_22
    • loc_en_US, sid_433041, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
    • clientName_bhphotovideo
    Be the first to review this item
    Customer Photos

    Sigma 300109 Q&A

    Sigma 300109 accessories

    See any errors on this page? Let us know.