08-08-2014, 10:35 PM
PZ tested this f/1.9 native lens on the older Q (1/2.3″ sensor):
![[Image: mtf.png]](http://www.opticallimits.com/images/8Reviews/lenses/pentax_q_85_19/mtf.png)
Looks like it's OK up to about f/2.8? Or is it already diffracted, which is why it's flat across the graph?
(The newer Q's have the slightly larger 1/1.7" sensor, so diffraction will kick in a bit later.)
Looks like it's OK up to about f/2.8? Or is it already diffracted, which is why it's flat across the graph?
(The newer Q's have the slightly larger 1/1.7" sensor, so diffraction will kick in a bit later.)
/Dave
http://dave9t5.zenfolio.com
http://dave9t5.zenfolio.com