09-28-2010, 08:45 PM
[quote name='wim' timestamp='1285531948' post='3266']
IF shoudln't be a deal breaker, IMO. Don't forget that IF essentially makes a prime a varifocal, or even a zoomlens (automatically, with focusing rather than exact control) <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />.
Kind regards, Wim <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />
[/quote]
"Due to the heavy weight of the lens system the AF speed is Okay but it's nothing rave about." <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/sad.gif' class='bbc_emoticon' alt='
' />
I want the fastest AF possible and my experience taught me that in order to achieve that you need both IF (or RF) and ring-USM. If it had them, I might have been tempted. The 135/1.8 is too heavy and slightly on the long side (FL wise) for the A33. Now, if one may dream of a 100/2 makro with AF and IF.....
IF shoudln't be a deal breaker, IMO. Don't forget that IF essentially makes a prime a varifocal, or even a zoomlens (automatically, with focusing rather than exact control) <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='
' />.Kind regards, Wim <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />[/quote]
"Due to the heavy weight of the lens system the AF speed is Okay but it's nothing rave about." <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/sad.gif' class='bbc_emoticon' alt='
' /> I want the fastest AF possible and my experience taught me that in order to achieve that you need both IF (or RF) and ring-USM. If it had them, I might have been tempted. The 135/1.8 is too heavy and slightly on the long side (FL wise) for the A33. Now, if one may dream of a 100/2 makro with AF and IF.....