Compare lenses

Pentax HD DA 40mm f/2.8 Limited vs Pentax smc DA 40mm f/2.8 XS

The Pentax HD DA 40mm f/2.8 Limited and the Pentax smc DA 40mm f/2.8 XS side by side, computed from this guide's catalogue.

Which to pick

On these specs they are close to even: hold both if you can, and let the price, the handling and the lenses you want decide.

Pentax HD DA 40mm f/2.8 Limited: 40mm on APS-C, like 60mm.

Pentax smc DA 40mm f/2.8 XS: 40mm on APS-C, like 60mm.

Pentax HD DA 40mm f/2.8 Limited: f/2.8 wide open.

Pentax smc DA 40mm f/2.8 XS: f/2.8 wide open.

Each opening drawn to scale against f/1.4: a smaller f-number lets in more light and blurs the background more.

How wide each sees, at each end, on the sensor it was made for.

20 cameras in this guide take both, so either works on the same body.