prime35mmvintage
SMC Pentax-A 50mm f/1.7
Pentax · 1984-1989
The A-series standard lens with program mode compatibility. Features 'A' aperture setting for automatic exposure control. Same excellent optics as the M version in a lighter package.
Known for
- General photography
- Program mode use
- Compact kit
- Beginners
Considerations
- Some plastic construction
- 6 aperture blades
Optical Characteristics
Sharpness (wide)4/5
Sharpness (stopped)5/5
Contrast5/5
Flare Resistance5/5
CA Control4/5
Vignetting Control4/5
Distortion Control5/5
Bokeh: Pleasant rendering
Rendering: Classic Pentax character
Color: Neutral
Common Issues
- Plastic aperture ring wear
- Focus ring stiffness
Buying Guide
Very common and affordable. Check aperture ring operation. Good kit lens upgrade.
Specifications
MountPentax K
Focal Length50mm
Max Aperturef/1.7
Min Aperturef/22
Aperture Blades6
Min Focus0.45m
Filter Size49mm
Weight165g
Optical Design
FormulaDouble Gauss
Elements6
Groups5
CoatingSMC (Pentax)
Pricing
£25 - £55
Typical used price
Mint: ~£80
Budget-friendly A-series
Adapts To
Sony EFujifilm XCanon RFMicro Four Thirds
Compatible Cameras
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