Pentax smc DA* 300mm F4.0 ED (IF) SDM vs Pentax Takumar 135mm f/2.5 Bayonet
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Pentax Takumar 135mm f/2.5 Bayonet is faster by 1.4 stops (f/2.5 vs f/4.0), letting in more light.
- Pentax Takumar 135mm f/2.5 Bayonet goes wider (135mm vs 300mm).
- Pentax smc DA* 300mm F4.0 ED (IF) SDM reaches further (300mm vs 135mm).
| Spec | smc DA* 300mm F4.0 ED (IF) SDM | Takumar 135mm f/2.5 Bayonet |
|---|---|---|
| Brand | Pentax | Pentax |
| Mount | Pentax K | Pentax K |
| Type | Prime | Prime |
| Focal length | 300mm | 135mm (wider) |
| Max aperture | f/4.0 | f/2.5 (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
Pentax Takumar 135mm f/2.5 Bayonet
A 135mm f/2.5 short-telephoto prime lens, the Pentax Takumar 135mm f/2.5 Bayonet is designed for Pentax K mount bodies. A classic Takumar lens from the Pentax screw-mount era, popular for vintage-lens adapting.