prime35mmdiscontinued
Pentax SMC 50mm f/1.7
Pentax · 1977-1997
The budget Pentax standard lens that punches well above its weight. Extremely compact, sharp, and affordable. Many prefer this to the f/1.4 for everyday use.
Known for
- Budget photography
- Travel
- Street
- Learning
Considerations
- 6-blade aperture
- Less subject separation than f/1.4
Optical Characteristics
Sharpness (wide)4/5
Sharpness (stopped)5/5
Contrast4/5
Flare Resistance5/5
CA Control4/5
Vignetting Control4/5
Distortion Control5/5
Bokeh: Pleasant hexagonal highlights
Rendering: Sharp, contrasty
Color: Neutral
Common Issues
- Focus ring loosening
Buying Guide
Incredible value. Often bundled with cameras. The M version is tiny and excellent for travel.
Specifications
MountPentax K
Focal Length50mm
Max Aperturef/1.7
Min Aperturef/22
Aperture Blades6
Min Focus0.45m
Filter Size49mm
Weight175g
Optical Design
FormulaDouble Gauss
Elements6
Groups5
CoatingSMC (Pentax)
Pricing
£40 - £80
Typical used price
Mint: ~£100
Best value 50mm available
Adapts To
Sony EFujifilm XCanon RFPentax K (native)
Compatible Cameras
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Last verified: Jan 2026Report an error