Godfrey DiGiorgi wrote: > On Oct 25, 2006, at 12:51 PM, Adam Maas wrote: > >> One question with that lens becomes what body was used. There's no >> way a >> Rebel other than the XTi can accurately AF a 85 f1.2L when shooting >> wide >> open, the AF unit simply isn't accurate enough. Even the XTi, 5D, 30D, >> 20D and 10D are marginal wide open with a tele lens that fast unless >> using the centre point, although the bodies with the 45 point unit >> will >> have no issues if you're using one of the high-precision points. > > I never rely upon *any* AF for critical focus wide open with anything > faster than an f/4 lens, and even that is chancy. Were I doing a > test, even a DRebel or 10D body would do great if you focus it > manually with a viewfinder magnifier. > > Godfrey > >
The 10D would do fine, I'd hesitate to try it woth the Drebel, even with a magnifier, the viewfinder is just too poor. I found the same issue with my D50 when I got some truly fast lenses (50/1.4 and 180/2.8), even with the DK-21M, it was not possible to focus accurately. -Adam -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
