I have been playing with my canon 40D now for 2+ years. Now and then I experience some tricky situations, and I'm thinking of buying a Ef-S focusing screen. But I'm not sure that this solves the problem, so here is my problem:
typically, I found I can rely on the autofocus. However, when shooting some head portrait of my young daughter with aperture wide open (2.8 to 1.4), the DOF is so shallow that proper focusing is utmost important.
I typically apply 2 methods: either just shoot ahead several shots and later select the best one, or use live view, magnify 10x, and focus manually.
Is there a better way?
I found the viewfinder only of little help at wide aperture. Is this just me?
Will the Ef-S be >>significantly<< better (value for money)?
I also saw some 3rd party split focus screens, with split opinions about usefulness.
Would split focus screen work on 40D, as the firmware does not have a specific setting for metering with it?
Thanks guys. I'm asking this since in my research, I did not find much info on the usability of focusing screens.