06-08-2011, 11:47 AM
[quote name='janzu77' timestamp='1307450692' post='9063']
I have also the same Tammy and have experienced the same. Phase detect AF is tack sharp, but contrast one seems to misfocus time to time. This same happens occasionally with my other lenses (Canon made) as well, even USM does not necessarily work any better. So I think that it's a feature, not a problem <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />
[/quote]
LOOOL janzu, they advertize contrast detection as being potentially more accurate! Luckily we have the 10x magnification to check the focus before the shot...
I have also the same Tammy and have experienced the same. Phase detect AF is tack sharp, but contrast one seems to misfocus time to time. This same happens occasionally with my other lenses (Canon made) as well, even USM does not necessarily work any better. So I think that it's a feature, not a problem <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />[/quote]
LOOOL janzu, they advertize contrast detection as being potentially more accurate! Luckily we have the 10x magnification to check the focus before the shot...