Review Lens: Pentax smc DA 50mm f1.8

Lens Overview - Pentax smc DA 50mm f1.8

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 smc DA 50mm f1.8 Latest Price



Focal Length50mm (35mm Equivalent Focal Length: 76.5mm)
Maximum Aperturef/1.8
Minimum Aperturef/22
Lens MountPentax K
Format CompatibilityAPS-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 StabilizationNone
Filter Size52 mm (Front)
Dimensions (ø x L)2.5 x 1.5" / 6.35 x 3.81 cm
Weight4.3 oz / 122 g

Photos Example - Pentax smc DA 50mm f1.8

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Canon EF 85mm f/1.2L II USM $1215 $1869 2006Canon Medium - Telephoto
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Mitakon Speedmaster 85mm f/1.2 Nikon $519 $799 2015Mitakon Medium - Telephoto
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Canon RF 85mm F1.2L USM DS Save 30% 2019Canon Medium - Telephoto
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Lens Technical

Pentax smc DA 50mm f1.8Nikon NIKKOR Z 85mm f/1.8 S135mm F1.8 GM
Name Pentax smc DA 50mm f1.8Nikon NIKKOR Z 85mm f/1.8 SSony FE 135mm F1.8 GM
Max Aperture At Min Focal f/1.8f/1.8f/1.8
Year 201220192019
Mount Type Pentax KAFNikon ZSony FE
Lens Type Lens MediumLens Medium,lens TelephotoLens Telephoto
Auto Focus NoNoNo
Price $249$800$1900
Lens Zoom PrimePrimePrime
Lens Range 5085135
Global 24.557549.0239
Effective Mega Pixel 11.610941.4052
Distorsion 0.1410.065
Vignetting -0.78047-1.08906
Tstop 1.97021.90191
Ac 1.701582.57863
Vignetting Ranking 49408036
Tstop Ranking 19251749
Ac Ranking 146484
Pixel Depth 2445.7
Price Sensor 13003400
Sensor Raw 24.5145.75
Sensor Format Sensor ApscSensor Fullframe
Type SemiProDSLRHybrid
Zoom Factor 111
Weight 1lb1lb1lb
Macro NoNoNo
Launch Date May. 2012Jul. 2019Feb. 2019
Brand PentaxNikonSony


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