Sigma 135-400mm F/4.5-5.6 APO RF ZEN
- Mount
- PENTAX K
- Focal Length
- 135-400mm
- Max Aperture
- F/4.5
- Type
- Telephoto
- Brand
- Unknown
Sigma 135–400mm f/4.5–5.6 APO zoom lens for Pentax K mount, intended for telephoto use such as sports and wildlife. Variable maximum aperture from f/4.5 to f/5.6.
Last verified: 2026-04-27