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Pentax DA 50mm f1.8 lens for Pentax DSLR Cameras

by Pentax
| 20 answered questions

List Price: $249.95
Price: $199.95 & FREE Shipping. Details
You Save: $50.00 (20%)
Only 13 left in stock.
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  • Fast f/1.8 aperture for outstanding depth of field control.
  • Rounded diaphragm blades create a more circular aperture for smooth, beautiful bokeh at large aperture settings.
  • Quick shift focus system for instant switching from auto to manual focus.
  • SP (Super Protect) coating which repels dust, water, grease and other substances that may adhere to the lens surface.
  • Focal length equivalent to 76.5mm (in 35mm format)
8 new from $199.95

Frequently Bought Together

Pentax DA 50mm f1.8 lens for Pentax DSLR Cameras + Tiffen 52mm UV Protection Filter
Price for both: $204.44

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  • Six-Month Financing: For a limited time, purchase $149 or more using the Amazon.com Store Card and pay no interest for 6 months on your entire order if paid in full in 6 months. Interest will be charged to your account from the purchase date if the promotional balance is not paid in full within 6 months. Minimum monthly payments required. Subject to credit approval. 1-Click and phone orders do not apply. See complete details and restrictions.


Technical Details

  • interchangeable-lens
  • digital-spy-camera

Read about our customers' top-rated lenses and cameras on our review pages: Lenses, Digital SLR Cameras, Compact System Cameras

Product Details

  • Product Dimensions: 1.5 x 1.5 x 2.5 inches ; 4 ounces
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B00861DI4U
  • Item model number: DA 50mm f1.8
  • Average Customer Review: 4.9 out of 5 stars  See all reviews (36 customer reviews)
  • Date first available at Amazon.com: May 25, 2012

Product Description

50mm prime standard Pentax K mount lens ideal for portrait still life or low light photography

Customer Questions & Answers

Customer Reviews

4.9 out of 5 stars
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See all 36 customer reviews
It's great in low light and requires no flash.
Keith Brown
I love the lens as it is very sharp and great in low light.
joann ray
I would highly recommend this lens to a friend!
Elliot

Most Helpful Customer Reviews

39 of 42 people found the following review helpful By Amazon Customer on October 16, 2012
Verified Purchase
It's great to know that Pentax users don't need to spend a lot to get great quality optics. While the plastic no-frills build of this product may seem deceptively cheap, the end product is a lens that will complement any photographer's kit, whether beginner, hobbyist or professional.

First, this lens is very light. The all-plastic construction means no extra weight, so carrying this lens around adds no noticeable bulk. It's also relatively compact for a 50mm lens, especially one that goes as wide as F1.8.

Second, despite the plastic construction, the build tolerances of this lens are very tight. There's no slop anywhere, it just feels well-made. If the Pentax Limited lenses were made of plastic, they'd feel like this.

And finally (or rather, most importantly), the optics in this lens are outstanding. This is a similar lens formula that Pentax has used in previous very successful products, but updated with more advanced coatings to excel on a digital camera. Items in focus are tack sharp, and the bokeh is dreamy both in front of and behind the in-focus subject. Colors are beautifully retained, and scenes are given a pleasantly warm tone. The F1.8 max aperture means this lens is great for low-light photography.

It's not all roses though. There are a few drawbacks to the budget build. This lens does not have any focus scale anywhere. And Pentax's "quick shift" feature that allows you to adjust focus manually after auto-focus is not present on this product. There's no lens hood or case included, either. This is about as no-frills as you can get. But considering the price and the quality of the optics, I guess some sacrifices had to be made.

Also, auto-focus speed can be disappointing.
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10 of 11 people found the following review helpful By Marktwain10 on September 25, 2013
The only other 50mm prime lens I have used that I can compare this to is the well-rated Sony 50mm 1.8 which I used for 2 years on a Sony a55. I just got this Pentax DA 50mm 1.8 brand new for $181 to use with my new K30 camera body. The Sony sells for $168, so they are both currently reasonably close in price. From the few hundred photos I have taken, I will give you my first impressions. First off, I noticed the Pentax does not have anything rattling inside like the Sony lens commonly has, and it is even smaller and lighter since it doesn't have the cheapish sounding SAM motor inside it like the Sony did. The Pentax is screw driven and is also a bit noisy but I knew that before I bought it. It focuses reasonably quick and is as fast as the Sony, and perhaps a little slower than the Pentax 18-55 DAL kit lens.
The Sony's plastic mount never gave me a problem, so I don't expect the Pentax to either. Though they are both nearly all plastic in construction, the Pentax has a much higher quality and solid feel to it. As far as chromatic aberrations go, at f1.8 (wide open aperture) the Sony would give me some green aberrations in very high contrast shots, whereas in similar scenarios the Pentax gives slight purple fringing (which are easier to correct in photoshop, in my opinion). At f2.0, the Pentax still has very minimal purple aberrations and only in super high contrast situations. By f2.8 they appear to be completely gone. The front lens is recessed enough that in most cases you can get by without a lens hood. The Pentax gives me decent sharpness at f1.8 so long as I nail focus of the shallow depth of field correctly. As you approach f4 aperture the Pentax gets sharper.
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12 of 14 people found the following review helpful By Quaal on November 4, 2012
Verified Purchase
I'm only a hobby photographer but this lens is absolutely amazing for the price. If you are looking for a prime lens go no further (unless you want to spent a lot more). It also helps you compose your shots better. I would definitely buy this lens again if I had to go back in time and I would definitely recommend this lens to any amateur.
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8 of 10 people found the following review helpful By Casey Crookston on August 5, 2013
I can't begin to tell you how much you *need* this lens in your collection. If it had cost twice as much, I still would be happy with it. I love the narrow depth of field it provides when shot wide open, but what I really enjoy is how well it performs in low light.

In that twilight time after the sun has set but before it gets dark, most of my other lenses require either a flash or a tripod. When I first got this lens, I took it to dinner where we would be eating outdoors on the beach with very little artificial light. I keep shooting handheld with no flash until all light was truly gone, and it kept turning out fantastic results. Of one of the photos I took that evening, a friend said "This looks like a still-frame from a movie!"

If you are used to shooting with a zoom (like I am) it will take some mental adjusting. At first I kept reaching for the lens to frame my shot, and then remembered that I would need to physically move. But the quality of the photos will wow you, and is well worth the adjustment to shooting prime.
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5 of 6 people found the following review helpful By desertfox on January 5, 2014
This fast 50 will blow your socks off! Especially if you have gotten used to the images from your 18-55mm kit lens. The sharpness is just insane compared to the kit lens. The light weight is nice and I have had zero problems with the plastic mount. Low light performance is wonderful. There can be some lens flare from bright light sources when wide open but this is expected. Color saturation is awesome. Brokkah is great. If you can only afford one prime, this one might be the one to get. Excellent value for the money -> I mean how much better can the DA* 55mm be? $500 better? Maybe so but this fast 50 has earned a very regular spot attached to my K-30. Also use it on my older K-x body.
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