Pentax SMCP-DA* 55mm f/1.4 SDM Auto Focus Lens for use with Digital SLR Cameras. with Pro Optic 58mm MC UV Filter, Lens Cap Leash, Professional Lens Cleaning Kit

Pentax 55mm F/1.4: Picture 1 thumbnail Pentax 55mm F/1.4: Picture 2 thumbnail Pentax 55mm F/1.4: Picture 3 thumbnail Pentax 55mm F/1.4: Picture 4 thumbnail Pentax 55mm F/1.4: Picture 5 thumbnail

Original Price: $675.84 Kit Discount: -$28.89 Get $25.88 Reward

Protect Your Investment:

Add a Protection Plan
  • Add a protection plan
  • New Leaf 3 Year Extended Warranty + $19.95
  • New Leaf 3 Year Drops & Spills Extra Protection + $26.95
  • New Leaf 5 Year Drops & Spills Extra Protection + $39.95
Kit Savings

Our Price

Buy more and save
Quantity Discount

The quantity discount will be reflected in your shopping cart

Ways To Save up to $140.00

Special Offers

More Buying Options

Product Highlights

  • 55mm F/1.4
  • 58mm UV (Ultra Violet) Filter
  • Universal Lens Cap Tether
  • Cleaning Kit

About Pentax 55mm F/1.4

Save $28.89 when you buy this Pentax 55mm F/1.4 . This Value Bundle comes with a Adorama Cleaning Kit, Pro Optic 58mm UV Ultra Violet Filter, ProOptic Universal Lens Cap Tether and a Pentax 55mm F/1.4 and Shipping is free! .

High performance standard lens - large maximum aperture

With super-low-dispersion optical elements, extra-low dispersion (ED) optical elements and PENTAX original lens coatings, the PENTAX DA* 55mm F1.4 SDM lens assures outstanding image quality with clear, high-contrast images, even at image field edges.

It features water and dust resistant sealing for reliable operation in inclement conditions, and the PENTAX Quick-Shift Focus system to allow instant auto-to-manual focus switching. Objective lens surface is treated with PENTAX original Super Protect (SP) coating. This special fluorine compound is applied through a vapor deposition process to create a surface that effectively repels dust, water and grease.

The combination of special lens coatings, ideal curvature and best positioning of optical elements assures optimized digitalimaging characteristics, while effectively minimizing flare/ghosting. It also features a new Aero Bright coating for maximum light transmission, and rounded diaphragm blades to create a more circular aperture for smooth, beautiful bokeh at large apertures.

Summary of Customer Reviews

Customers most agreed on the following attributes:
Consistent output (3),Durable (3),Fast / accurate auto-focus (3),Lightweight (3),Rugged (3)
Best Uses:
Low light (3)

Pentax 55mm F/1.4 Features

  • The smc PENTAX DA Star 55mm F1.4 SDM is a prime standard lens that is ideal for portrait, still-life, or low light photography.
  • Its fast F1.4 aperture offers outstanding depth of field control, and its rounded diaphragm blades create a more circular aperture for smooth, beautiful bokeh at large aperture settings.
  • Adding the PENTAX Aero Bright coating on internal lens elements offers ultra high refraction index for improved light transmission with minimal ghosting and flaring
  • The tightly sealed, weather-resistant and dust-resistant construction enhances durability for use in both rainy and dusty conditions, making the DA Star 55mm F1.4 SDM lens a perfect companion for the weather-resistant PENTAX DSLR bodies.
  • The PENTAX-original Quick-Shift Focus System allows instant switching from autofocus to manual focus operation.
  • The PENTAX-original SP (Super Protect) coating repels dust, water and grease to keep your lens clean and your image quality at its peak. ring.
  • The SDM focus system incorporated in this lens results in a smoother, quieter autofocusing operation using a built-in supersonic motor.
  • The focal length is equivalent to 84.5mm in the 35mm format.
  • Developed specifically for PENTAX digital SLR cameras.

Pentax 55mm F/1.4 Specifications

8 Groups/ 9 Elements
Angle of view
28.6 degrees (w/PENTAX DSLR)
F stop range
Closest Focusing Distance
0.45m (1.5 ft.)
Maximum Magnification
Filter Size
Dimensions (Length x Diameter)
2.6" x 2.8" (66.0 x 70.5mm)
13.2 oz. (375g)
Quick-shift focus, SP (Super Protect) coating, Rounded aperture (F1.4-2.8), Dustproof and weather resistant, SDM supersonic autofocus motor, SDM-only autofocus (manual focus on non-SDM bodies)
Mfr #
21790 K

Pentax 55mm F/1.4 Reviews

Review Snapshot®


(based on 5 reviews)


of respondents would recommend this to a friend.

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 5 customers


Really nice


from South Texas  -  Photography Student

A wonderful lens, really nice smooth bokeh. Not as sharp as a Carl Zeiss but it is autofocus. Also had no problems using it out in the rain, if the weather is bad this is the lens I'd want to have with me.


a perfect fast backup lens


from Milford , Massachusetts  -  Pro Photographer

This lens is my perfect backup lens to my Zeiss 85mm f 1.4 ..will be used in my portrait photography

(0 of 1 customers found this review helpful)


Easy review... "pro reviews all true!"


from New Port Richey, FL  -  Casual Photographer

As the heading says... "It's an easy review!" I did my research, lots of it. This day and time I think twice about any purchase more expensive than a hamburger. I wanted a GREAT lens that was also a GREAT buy with GREAT reviews. Well, I couldn't find any reviews that spoke ill of it... period; AND the price was great! So I bought it... I love it!!! OK, so it's just a smidge big... more to love!

(0 of 1 customers found this review helpful)


Fun lens


from Stockholm  -  Hobbyist/Enthusiast

It's a fun lens that can be used both indoors in poor lighting and outside for cool artsy closeups. I love the large aperture. It's also real nice for portraits. This lens is always on my camera.

(6 of 6 customers found this review helpful)


Superb Often Unjustly Maligned Lens


from Warner Robins, Georgia  -  Semi-Professional

I just purchased a truly like new Pentax DA* 55mm f/1.4 SDM demo from Adorama at a substantial discount. These guys I feel are the only place to buy in my opinion. I naturally did my due diligence by reading as many of the reviews as possible and the lens is indeed what they say, razor sharp. I did not experience any fringing or purple edge artifacts at all. But the real show stopper on this lens seems to be that it is somewhat "camera specific." More specifically, if you own older Pentax DSLRs, like the K10, there will be a high likelihood of problems in properly focusing, and even in some reported instances -- centering as well. Therefore, the first thing out of the box, I checked these and did so on a high quality very stable copy stand with Manfroto arm. The results were excellent and totally consistent in regards to the two aforementioned problems encountered with this lens on older Pentax DSLRs. I have a Pentax K7 by the way and love it, as I do this lens. But often solitary comparisons are not totally just. I then used the Limited 31mm and 43mm Pentax lenses as well as my converted Contax 45mm pancake with Pentax K mount and all gave the same superb results without any of them leaving the Pentax DA* 55mm f/1.4 SDM in the proverbial dust. The test was the old one so many people perform, take the want ads sheet from the newspaper and try close focusing and then see how readable the fine print is. In this regard this lens was the winner among these heavyweights. The only lens to match it was my Voigtlander Lanthar 90mm manual focus lens. To further clarify, I bought a focusing screen from Katz Optics and this was the best purchase I ever made since it now allows me to use some truly primo MF lenses that most people have no use for and therefore they sell at artificially depressed prices.

Share this item: is top rated for customer serviceHACKER SAFE certified sites prevent over 99.9% of hacker crime.