prime35mmvintage
SMC Pentax-A 24mm f/2.8
Pentax · 1983-1988
Pentax's A-series ultra-wide angle. The 24mm focal length provides dramatic perspectives for architecture, interiors, and landscapes. Close focusing to 0.25m adds creative flexibility.
Known for
- Architecture
- Interiors
- Landscapes
- Creative perspectives
Considerations
- Some distortion
- 5 aperture blades
Optical Characteristics
Sharpness (wide)4/5
Sharpness (stopped)5/5
Contrast5/5
Flare Resistance5/5
CA Control4/5
Vignetting Control4/5
Distortion Control3/5
Bokeh: N/A for ultra-wide
Rendering: Sharp, dramatic
Color: Neutral
Common Issues
- Focus ring wear
Buying Guide
Good A-series ultra-wide. Check focus smoothness. Worth seeking out for architectural work.
Specifications
MountPentax K
Focal Length24mm
Max Aperturef/2.8
Min Aperturef/22
Aperture Blades5
Min Focus0.25m
Filter Size52mm
Weight195g
Optical Design
FormulaRetrofocus
Elements9
Groups8
CoatingSMC (Pentax)
Pricing
£80 - £150
Typical used price
Mint: ~£200
Ultra-wide pricing
Adapts To
Sony EFujifilm XCanon RFMicro Four Thirds
Compatible Cameras
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Last verified: Jan 2026Report an error