Originally posted by Mike Cash I wonder if we did a survey of those who love them and those who don't care for them we would find a clear difference between those of us who mainly use fast(er) primes and those of us who use slow(er) zooms. I suspect we would.
Most of my manual focus lenses tend to be of the slower variety (35mm f:3.5, 28mm f:3.5, 135mm f:3.5, 50mm macro f:4, 24mm f:3.5, 20mm f:4, etc.). I use the Katz-Eye split focus screen. The blackout on this type of screen used to begin at 3.5 on film cameras. The Katz-Eye engineers seem to have extended this cutoff point a bit, making it more feasible for slower lenses like mine, especially the auto-aperture early K & M varieties. Besides this, when I have trouble as I stop down my M42s, I defer to the surrounding microprism collar, & the Matte viewing screen as a last resort. If all these options fail, I close my eyes & hope for the best.