--- Ken Durling <[EMAIL PROTECTED]> wrote: > Seems to me the most consistent spoiler of AF is > lack of contrast, > and that would hold in dim light. But however, that > doesn't go far > in explaining the f/5.6 or f/8 limits, although I do > like the > geometry explanation.
2/1000: The last 3 paras on last page (page 17 of 17) of this (IMHO) very good document touches about importance of aperture: http://doug.kerr.home.att.net/pumpkin/Split_Prism.pdf (or http://tinyurl.com/6ykox) I think I understand some of it a wee bit better now. FWIW, I got this off here: http://en.wikipedia.org/wiki/Autofocus (or http://tinyurl.com/74gv4) - Harman __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************