Shel, FA (AKA KAF2) lenses do not all have power zooming--in fact, only the initial ones did.
See Boz's page: http://kmp.bdimitrov.de/technology/K-mount/index.html "KAF2 lenses without power zooming feature a 4-bit CPU that is virtually identical to that used by the KAF lenses, but it supports also MTF transferral. Lenses with power-zooming feature an 8-bit CPU that additionally supports the power-zooming functionality. The body's central processing unit (CPU) and data processing unit (DPU) interface with the lens' CPU are responsible for controlling the digital communication." I've not noticed any difference except the absence of MTF program exposure, which I never use anyway. Rick --- Shel Belinkoff <[EMAIL PROTECTED]> wrote: > Assuming the same optical formula, is the only > difference between the F and > FA lenses the power zoom feature, or are there more > differences? Any that > really matter wrt use on the D cameras? > > > Shel > > > > http://www.photo.net/photos/RickW __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
