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Grantland wrote:
I mean to say varifocal. I learned something new. Thanks!
I did try to focus as the length I was using. I tried 10 different times from 100-125mm and it would not focus. I took off the 1.4x and it focused, as usual, at 70mm.
Anyhow, thanks or the help/comments.
This is the first time I ran into this on the wide end. The 1.4x must have changed things.
Grant
I'm completely ignorant when it comes to extenders. Maybe it was the cause like you say. I wish I had info to offer. All I can say is this: in pitch black wedding receptions, where the only light is generated by dj lasers, my 70-200 chases a tad now and then, it's true, but never enough to keep me from getting the shot. It focuses very accurately and hits wonderfully. The chasing occurs because there's a sea of faces on the dance floor and sometimes it jumps to the wrong face. All of this happens in fractions of a second, then it grabs the face I want, and bam, I have the shot. All this to say that there may be something wrong with your lens, IF it's not the extender.
Finally, a practical word: At the time of your shoot, did you check all the switches on the barrel of the lens? I've had the 70-200 go wonky and I quickly realize I've bumped one of the switches. Just a more practical thought!
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