macro35mmdiscontinued
SMC Pentax-A 100mm f/2.8 Macro
Pentax · 1984-1996
True 1:1 macro with excellent working distance. Professional quality.
Known for
- Macro
- Portraits
- Product photography
Considerations
- Long focus throw
- Heavy for macro work
Optical Characteristics
Sharpness (wide)5/5
Sharpness (stopped)5/5
Contrast5/5
Flare Resistance4/5
CA Control3/5
Vignetting Control3/5
Distortion Control4/5
Common Issues
- Check for fungus
- Inspect aperture blades
Buying Guide
Specifications
MountPentax K
Focal Length100mm
Max Aperturef/2.8
Min Aperturef/32
Aperture Blades8
Min Focus0.31m
Filter Size49mm
Weight395g
Optical Design
FormulaTelephoto
Elements9
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