macro35mmdiscontinued
SMC Pentax-M 100mm f/4 Macro
Pentax · 1977-1984
Telephoto macro with excellent working distance. Very sharp.
Known for
- Macro
- Insects
- Butterflies
Considerations
- Only 1:2
- Slow aperture
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/4
Min Aperturef/32
Aperture Blades6
Min Focus0.45m
Filter Size49mm
Weight345g
Optical Design
FormulaTelephoto
Elements5
Groups4
CoatingSMC (Pentax)
Pricing
£120 - £200
Typical used price
Mint: ~£280
Adapts To
Sony EFujifilm XCanon RFMicro Four Thirds
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Last verified: Jan 2026Report an error