Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR

Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR

Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR

B&H # PE5514DA MFR # 21790
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Pentax 55mm f/1.4 overview

  • 1Description

The Pentax 55mm f/1.4 DA* SDM Autofocus Lens is a compact and bright short-telephoto lens of the highest order, made exclusively for Pentax digital SLR cameras.  In a stocky housing ready for harsh conditions, you'll get a bright f/1.4 aperture-worlds away from the experience you're used to with more common zooms-that opens up new creative doors to you as a photographer.

This lens was born to shoot between f/1.4 and f/2.8, and comes with a 9-bladed aperture diaphragm which shows up as perfectly round when you stay between f/1.4-2.8.  Shoot dramatic portraits with bright point light sources behind the subject, and you'll be dazzled with lovely diffuse, circular out-of-focus highlights that make everybody look better.  Beyond portraits, this lens works well any time you would use a moderate telephoto focal length.

The focusing system of this lens is SDM only; there is no screw on the rear of the lens barrel to have the AF driven by a body-based motor.  This allows the lens to move incredibly quick, driven by an internal motor and with the Quick-Shift system providing manual override capacity to you any time you want it with no buttons to switch; but you'll need a Pentax body which allows SDM autofocus (all current Pentax bodies support SDM, but the *IST series does not).

Note: Does NOT provide autofocus upon non-SDM-enabled Pentax cameras.

Brilliantly-sharp portrait lens which gathers plenty of light
Completely-rounded aperture diaphragm from f/1.4-2.8 for beautiful out-of-focus highlights
Speedy SDM autofocus motor provides fast, silent response with Quick-Shift full-time manual override
Pentax's unique SP water and dirt-repelling coating on both external surfaces
Pentax's "Aero Bright" internal lens yields high transmissivity and reduced flare
Dust and moisture-resistant housing
Essentially equivalent to an 82.5mm f/1.4 lens upon 35mm SLR cameras
UPC: 027075147348
In the Box
Table of Contents
  • 1Description

Pentax 55mm f/1.4 specs

Focal Length 55mm
Comparable 35mm Equivalent on APS-C Format Focal Length: 82.5 mm
Aperture Maximum: f/1.4
Minimum: f/22
Camera Mount Type Pentax K
Format Compatibility Pentax Digital (APS-C)
Angle of View 28.6°
Minimum Focus Distance 1.48' / 45 cm
Magnification 0.17x
Maximum Reproduction Ratio 1:6
Optical Design 9 Elements in 8 Groups
Diaphragm Blades 9
Image Stabilization No
Autofocus Yes
Tripod Collar No
Filter Thread 58 mm
Dimensions (DxL) 2.8 x 2.6" / 7.11 x 6.60 cm
Weight 13.23 oz / 375 g
Packaging Info
Package Weight 1.45 lb
Box Dimensions (LxWxH) 5.7 x 4.9 x 4.3"

Pentax 55mm f/1.4 reviews

Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR is rated 4.5 out of 5 by 31.
Rated 5 out of 5 by from Best lens I've ever had I currently own three other lenses: 18-135 (kit lens), Tamron 70-200 f2.8 (which I really love) and the new Pentax 24-70 f2.8 but in all this my absolute favourite. In fact it's been on my camera body since I got it and I almost never use the others. Truth be told, it's sometimes soft at f1.4 but I almost always shoot at f1.6 and it's really sharp from this aperture upwards. If you purchase this lens, it's highly important that you properly calibrate it otherwise you might experience severe back/front focusing. At f1.4 your area of focus is really tiny so accuracy is instrumental. In my case, 9-10 shots would back-focus initially but I was able to easily resolve it in-camera with a setting of +10.
Date published: 2016-11-27
Rated 5 out of 5 by from Love it. I bought this lens to upgrade from my FA 50mm. The DA* lenses are indeed worth the price point. It's rugged and the weather sealing is of course a great practical choice. At 55mm with the APS-C sensor it mimics an 85mm, the darling of portrait photogs. The lens if fast and silent, and balances well with the K5. I find it slightly less sharp compared to the FA50, but it's absolutely portrait sharp. The SDM is slightly slower than the screw drive lenses, this suprised me, but it's not a dealbreaker. The bokeh is arguably better. I find the hood a little goofy looking and you can't get the lenscap off with it attached unless you have long, freakish fingers. All in all I'm pleased to have this on my rig.
Date published: 2012-08-06
Rated 4 out of 5 by from Great Image quality, Iffy Autofocus This thing has an incredibly good image quality that should be expected of a DA* lens, and expected from the hefty price tag. The problem I'm having is that the autofocus just doesn't want to always work correctly. At the moment I have to have my K-5 set to +8 for the Autofocus fine adjust screen just to make it acceptable and still have to use probably f/2 or above to make sure I get as much in focus I can. When it does work though, you can get some pretty fun and very high quality images. At f/1.4 you can have a lot of fun with the very small depth of field creating kind of 3D style images, but you can still get some pretty nice landscape images at higher stops.
Date published: 2012-07-01
Rated 5 out of 5 by from sharp, backfocus issue fixed This is a great lens. Super sharp and wonderful blur. Backfocus WAS a big issue, needing and adjustment of +10 (ie maximum possible) with my k5, and impossible to use with my k10. However, contacted Pentax service (Belgium) and sent in the lens and both bodies. Backfocus fixed on both bodies (needing just -2 adjustment on k5, ever soooo slight backfocus on my k10). I've tested the lens on both cameras from about 25cm to infinity. Great across the whole range!
Date published: 2011-12-05
Rated 4 out of 5 by from Generally great, but sometimes a bit off A very solid and beautifully built lens that mostly produces very nice photos. The colors and details are great, and it works very well for night photography. In particular, it handles nighttime street lights very well (much better than, say, the 40mm F2.8 limited, which produces very strange flares). My only criticism is that sometimes, particularly in weird lighting, it just seems cursed. On the order of taking 20 photos of a complex sculpture in the late twilight and all of them turning out blurry. All in all, a very nice lens to take out in the rain.
Date published: 2017-01-03
Rated 4 out of 5 by from Fast and Sharp... But I use this lens for night shooting-- often at our commercial boat basin where lighting is low with wildly mixed colors. I needed weather sealing for this and the DA* 55mm f1.4 delivers-- and it's also very well built. Re sharpness and contrast: useable wide open and criticly sharp by f2.8. My only problem was significant back focus and I had to micro adjust +9 to 10 units to get accurate focus(I have 2 K5s). But it was worth it as the lens is both very sharp and contrasty. I don't find this lens heavy on the K5.
Date published: 2011-11-20
Rated 5 out of 5 by from Can't go wrong with this lens Very sharp lens!!! The key with any lens when using wide apertures is to spend the time calibrating the lens with your camera's micro focus adjustments. Accurate focus every time, no hesitation to reach for this lens from my camera bag when I want a guaranteed excellent portrait shot.
Date published: 2016-06-19
Rated 5 out of 5 by from Great product at a price I needed a lens for low light photography and debated about getting this or the Pentax 16-50mm f2.8 zoom. This won out because of the greater low light capability. In terms of convenience the zoom would have been better perhaps but in the situations I work in I can move to get the perspective I need. I also like the wonderful bokeh and with f1.4 I can isolate my subject nicely. It is also less money than the zoom. While nevertheless expensive, it is quality, and I've never regretted buying quality.
Date published: 2010-12-23
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Pentax 55mm f/1.4 Q&A

Pentax 55mm f/1.4 accessories

Designed for use with:

  • Pentax K-3 II
  • Pentax K-70
  • Pentax K-S2
  • Pentax KP