fisheye35mmdiscontinued
SMC Pentax-M 17mm f/4 Fisheye
Pentax · 1977-1984
Full-frame fisheye with 180-degree diagonal view. Built-in filters.
Known for
- Creative photography
- Real estate
- Extreme wide views
Considerations
- Extreme distortion
- Specialized use
Optical Characteristics
Sharpness (wide)4/5
Sharpness (stopped)5/5
Contrast4/5
Flare Resistance4/5
CA Control3/5
Vignetting Control3/5
Distortion Control1/5
Common Issues
- Check for fungus
- Inspect aperture blades
Buying Guide
Specifications
MountPentax K
Focal Length17mm
Max Aperturef/4
Min Aperturef/22
Aperture Blades6
Weight330g
Optical Design
Formulaother
Elements11
Groups8
CoatingSMC (Pentax)
Pricing
£200 - £350
Typical used price
Mint: ~£450
Adapts To
Sony EFujifilm XCanon RFMicro Four Thirds
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Last verified: Jan 2026Report an error