Originally posted by violaferenc
Thanks folks! Very helpful.
Say, Pentax mount is the same for like decades, does Pentax has the same situation as Canon: full frame lenses and APS-C lenses? On Canon you can't use usually cheaper APS-C lenses on full frame body.
Thanks
Pentax APS-C and FF is different than Canonʻs in that Canon EF (FF) lenses can only be mounted onto Canon FF DSLRs and Canon EF-S (APS-C) lenses can only be mounted onto Canon APS-C DSLRs. Canonʻs alignment mark is a red dot on the FF lenses/cameras vs. a white square on the APS-C lenses/cameras.
Canon sells more gear this way as anyone upgrading to FF has to start over with all their lenses. Reminds me of Apple every time you get a new laptop, tablet, or phone and the ports are different.
With Pentax, you can mount either to either, but a DA crop sensor lens on a FF camera is more likely (not always) to vignette and is best when used in the crop sensor mode on a FF.
When using a DFA or FA lens on an APS-C DSLR on Pentax, you get the benefit of compatibility and more of the center sweet spot of the lens with down side of usually a bigger/heavier lens.