Yes, for me, on the istDS, the ease of focus is similar at equal f-stops. I am not trying to say this, I am saying it. Try it yourself and see what your experience is.
Many modern finders and screens are brighter than many older finders and screens. While i don't know the physics of it, I believe it has something to do with channeling a given amount of light through a smaller viewfinder, something, perhaps, akin to looking at a scene normally and then through a toilet paper roll core. When looking through the TP roll core, things appear more contrasty and sharper. Perhaps someone who knows how to better explain the physics of all this will jump in at some point. All I can do is tel you what my experience is. Shel > [Original Message] > From: J. C. O'Connell > Are you trying to say a 35mm f3.5 lens is > as easy to focus as a 105mm f3.5 lens? If > you are I strongly disagree and it has nothing > to do with the finder ( at least general purpose > finders like the ones found in most SLR/DSLRS ). > Newer cameras dont have magic finders that > change the laws of physics... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
