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HomePhotographyLensesSLR LensesPentax DA 50mm f/1.8

Pentax smc DA 50mm f/1.8 Lens

BH #PE5018DA • MFR #22177
169 reviews
Pentax smc DA 50mm f/1.8 Lens
Key Features
  • Very Fast f/1.8 Maximum Aperture
  • Excellent Low-Light Lens
  • Pleasing Bokeh (Out-of-Focus Areas)
  • SP Coating Repels Dust, Water, Grease
The smc DA 50mm f/1.8 Lens from Pentax is a fast f/1.8 lens for cameras with a Pentax K mount. Mounted to a camera with an APS-C sensor, this lens gives an angle of view equivalent to a 76.5mm telephoto lens--ideal for portraits. The wide f/1.8 aperture makes this an essential lens for working in low light, and it also delivers beautiful bokeh (the out-of-focus portion of a photograph). This lightweight (4.3 oz) lens is very compact--just 1.5" (3.8 cm) long. The addition of Pentax Super Protect (SP) coating to the lens helps prevent dust, water, grease and other substances from attaching themselves to a lens and degrading image quality.
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Pentax DA 50mm f/1.8 Overview

The smc DA 50mm f/1.8 Lens from Pentax is a fast f/1.8 lens for cameras with a Pentax K mount. Mounted to a camera with an APS-C sensor, this lens gives an angle of view equivalent to a 76.5mm telephoto lens--ideal for portraits. The wide f/1.8 aperture makes this an essential lens for working in low light, and it also delivers beautiful bokeh (the out-of-focus portion of a photograph). This lightweight (4.3 oz) lens is very compact--just 1.5" (3.8 cm) long. The addition of Pentax Super Protect (SP) coating to the lens helps prevent dust, water, grease and other substances from attaching themselves to a lens and degrading image quality.

Very fast f/1.8 maximum aperture is ideal for low light situations and produces pleasing bokeh in the out-of-focus areas of a photograph
76.5mm telephoto equivalent in APS-C format
The lens is treated with the Pentax's original SP (Super Protect) coating, which repels dust, water, grease, and other substances that may adhere to the surface of the lens. The protective coating promotes trouble-free use in all kinds of shooting situations.
UPC: 027075217607

Pentax DA 50mm f/1.8 Specs

Focal Length50mm (35mm Equivalent Focal Length: 76.5mm)
Maximum Aperturef/1.8
Minimum Aperturef/22
Lens MountPentax K
Lens Format CoverageAPS-C
Angle of View31.5°
Minimum Focus Distance1.48' / 45.11 cm
Maximum Magnification0.15x
Optical Design6 Elements in 5 Groups
Diaphragm Blades7
Focus TypeAutofocus
Image StabilizationNo
Filter Size52 mm (Front)
Dimensions (ø x L)2.5 x 1.5" / 6.35 x 3.81 cm
Weight4.3 oz / 122 g
Packaging Info
Package Weight0.47 lb
Box Dimensions (LxWxH)3.85 x 3.7 x 3.45"

Pentax DA 50mm f/1.8 Reviews

Basic necessity 50mm

By Steven
Rated 4 out of 5
Date: 2022-09-13

Love the low light ability and use with aperture override. This will force better composition skills and deliberate use of settings. Plastic K mount should be metal, but the price was right! I'll keep this one on the camera the most because it is small and light weight.

Nifty Fifty

By Kitty
Rated 5 out of 5
Date: 2021-12-13

Proper street lens for low light situations. Price can be beat. After going with three different mirrorless systems over the last 7 years, I've gone back to Pentax which doesn't manufacture mirrorless cameras. No gimmicks. Just a good basic lightweight lens for walkabout.

Great lens

By Garrett
Rated 5 out of 5
Date: 2021-02-22

This is a great little lens and is become on of my favorites that I use everyday.

Pentax 50mm

By Mohsen
Rated 5 out of 5
Date: 2021-01-31

compact and sharp, great for street photography.

Lightweight, compact and arrived in perfect condition!

By Joe
Rated 5 out of 5
Date: 2020-12-27

Very versatile lens that arrived safely in great condition.

Great Short Focus Lens with Blur

By Basil
Rated 5 out of 5
Date: 2020-11-23

This lens has given me the option of taking great photos with blur. I will now be able to take wonderful portrait photos that have been difficult with my 18-270mm Pentax zoom lens. I was recommended this lens by your sales staff when I outlined what I wanted to achieve and have been very impressed with the service and short delivery time frame. I have attached my first photo of my kids money pig as an example

Nice portrait lens

By Steve
Rated 5 out of 5
Date: 2022-08-08

It is a fast lens that is great for indoor portraits. Rarely have to use the flash to take indoor portraits which is nice to take advantage of natural light sources. Nice range of depth of field because of the wide aperture which can create sharp or shallow backgrounds which is very useful in taking landscapes and personal portraits. You can get very creative with your photography by changing the aperture settings. It is very easy to carry the lens on camera because of its feather light weight.

Fantastic Plastic 50

By Nora
Rated 5 out of 5
Date: 2022-02-15

This 50mm lens is as nice as all the other 50mm lens that I won: Canon's nifth fifty, Fujifilm 50mm, and Nikon's 50mm. The 50mm lens is just a great go-to lens for street photography and portraits.

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YOUR RECENTLY VIEWED ITEMS

question

Will this fit my pentax k-30 .
Asked by: Anonymous
Yes, this lens is fully compatible with your Pentax K-30 camera.
Answered by: Yos O.
Date published: 2018-08-28

question

would it work with my Pentax K-X?
Asked by: Anonymous
The Pentax smc DA 50mm f/1.8 lens is compatible with the Pentax K-x.
Answered by: Christina S.
Date published: 2018-08-28

question

Is it compatible with Pentax K-r?
Asked by: Anonymous
The Pentax smc DA 50mm f/1.8 lens is compatible with the Pentax K-r.
Answered by: Christina S.
Date published: 2018-08-28

Would this mount to Pentax ME Super?

Would this mount to Pentax ME Super?
Asked by: andrew
This is a Pentaxk K-mount lents. Find out if your camera is a k-mount.
Answered by: Juan Carlos
Date published: 2020-08-12

When used with K1 mark 2 will this still be 50mm?

When used with K1 mark 2 will this still be 50mm?
Asked by: lew
I would look at the Pentax Normal SMCP-FA 50mm f/1.4 Autofocus Lens linked here. https://bhpho.to/3fFVEfA
Answered by: Scott A.
Date published: 2021-06-03

is it all plastic?

is it all plastic?
Asked by: Dinh
Yes it is , but well build
Answered by: vilson
Date published: 2021-01-18

question

Whats the warranty on the Lens?
Asked by: Anonymous
The Pentax SMC DA 50mm f/1.8 lens is covered by a one year, limited warranty.
Answered by: Heather S.
Date published: 2018-08-28

question

Since this lens doesn't have aperture ring, What If I use it on Olympus OM-D EM5 Mark II with fotodix PK/M43 mount adapter(which doesn't have electronic contact), will aperture stay at f1.8 always? P.S. buying this lens primarily for pentax K5 and secondary for EM5 II.
Asked by: Vasanth V.
Correct, you wouldn't have control over the aperture and it would stay wide open at F/1.8
Answered by: Andrea O.
Date published: 2018-08-28
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