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Senior Member
Auto focus comparison between 100 f/2 and 100 f2.8 macro
Does anyone know if the auto focus is much faster in the f/2 version of this lens? How does the focus speed compare to the 85 f1.8? I alreadyown the 100mm macro and am thinking about the possibility of some indoor sports and a couple weddings coming up. I know I get another stop with the f/2, but really wanted to know if it has a faster focus. I tried to see if Bryan made mention of it, but he only comments that both focus very quickly. Appreciate the assistance.
Jayson
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Re: Auto focus comparison between 100 f/2 and 100 f2.8 macro
well I know from experience that the macro has one of the slowest AF sequences that I have ever used. I'd be shocked if the f/2 was slower.
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Senior Member
Re: Auto focus comparison between 100 f/2 and 100 f2.8 macro
I have the 100 f2 and my experience is that it is very fast. I only have the 24-105 and several Tamron lenses to compare it to. No experience with the 2.8. I shot this of my daughter at 8:00 in the evening with no flash on my XTi. It was at f2.5 @ 1/1000.
[img]/cfs-file.ashx/__key/CommunityServer.Components.UserFiles/00.00.00.24.67/IMG_5F00_0011b.jpg[/img]
I have posted this image a few times so some may be tiered of seeing it.
Mark
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Senior Member
Re: Auto focus comparison between 100 f/2 and 100 f2.8 macro
Focusing is only slow when you want to focus something from closeup to then something of like infinity! General focusing is very quick.
I find sometimes that when it can't find something to focus on, it goes back and forth like crazy! and i have to manually focus it, then let it autofocus.
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