Quote:
Originally Posted by Weebl
Dave,
If I take the tele off, shoot without it and crop it, there is a noticeable difference. So, I'm starting to think that only at distance with the 300 it's funky.
It's a Canon 1.4xii bought new
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Wow. There's something wrong.
You're doing just the opposite of my mantra (more pixels) when you, in effect, digitally zoom by cropping and prefer it to optical reach. I can't imagine what's going wrong, but I've never had a Canon TC that bad.
Have you tried micro adjusting the AF with the TC attached? Quite often you'll get a different micro adjustment, with and without your TC. The camera may be front or back-focusing with the TC and yet still be accurate without the TC. I'd check this out before sending anything off to Canon.
Dave