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10/30/2007 02:51:00 PM · #1 |
I have noticed a focus problem with my 100-400L when I have zoomed in on a leaf or such. I have to manually focus it or zoom back out, focus, then go back in and it will usually lock at that time. Does this indicate a problem with the lens? I don't remember ever having such an event with my last 100-400L.
I am asking if this is normal. Should one first focus in on a distant object before zooming in?
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10/30/2007 03:12:17 PM · #2 |
I find this lens hunts a bit at times. It's usually due to the lack of contrast in the subject.
Changing the range of focus sometimes helps (see switch on side of lens - 1.6 to infinity or 6.5 to infinity - or something like that). Choose the range that suits your situation.
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10/30/2007 03:36:46 PM · #3 |
better yet, send it to me and i'll have a look through it and get back to ya.
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10/30/2007 03:46:23 PM · #4 |
That is the first thing I check Colette, but the same thing happens. Perhaps it is just a matter of singling out one leaf among so many LOL But the one I pick is illuminated by sun so I would think there is enough contrast. If others experience the same thing, then I won't worry about it. I just got this leans and I am the 3rd owner, so I may be looking for problems :)
And Dave - how sweet of you to offer yourself like that. Ha!
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