Pentax smc DA* 300mm F4.0 ED (IF) SDM vs Sigma 300mm f/2.8 APO EX DG HSM
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Sigma 300mm f/2.8 APO EX DG HSM is faster by 1 stop (f/2.8 vs f/4.0), letting in more light.
| Spec | smc DA* 300mm F4.0 ED (IF) SDM | 300mm f/2.8 APO EX DG HSM |
|---|---|---|
| Brand | Pentax | Sigma |
| Mount | Pentax K | Pentax K |
| Type | Prime | Telephoto |
| Focal length | 300mm | 300mm |
| Max aperture | f/4.0 | f/2.8 (faster) |
| Format | aps-c | n/a |
| Weight g | 1070 | n/a |
| Filter mm | 77 | n/a |
| Length mm | 184.0 | n/a |
| Diameter mm | 83.0 | n/a |
| Min focus m | 1.4 | n/a |
Pentax smc DA* 300mm F4.0 ED (IF) SDM
A 300mm f/4 telephoto prime for Pentax APS-C bodies with SDM focusing. It weighs about 1,070 g and takes 77mm filters.
Pros
- f/4 at 300mm
- SDM autofocus
- Star-series build
- Close focus 1.4 m
Cons
- APS-C only
- Heavy
- No lens stabilization
Sigma 300mm f/2.8 APO EX DG HSM
This 300mm f/2.8 full-frame telephoto prime lens from Sigma fits Pentax K mount cameras, with Hyper Sonic Motor autofocus and apochromatic correction. It brings distant subjects closer for sports, wildlife and events.