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p.1 #6 · p.1 #6 · Tips on more accurate focus with the 5d mk1? | |
jvphotos wrote:
I got my 5d a little over a year ago, and I love it (though I don't get the chance to use it nearly often enough these days). After I had it for a while I noticed the center AF point seemed to be a little bit "low" compared to the dead center of the picture when viewing it in cs6. Since I got it from KEH I sent it back for them to look at it, and they forwarded it on to canon to get calibrated. I got it back with a clean bill of health, but despite that I'm still having some trouble getting shots that are consistently in focus. I recently started using back button focus and that doesn't seem to make a whole lot of difference. I'm getting a number of shots that seem to be back-focused (although some are front focused, with the same lens!), and I'm starting to think there's a problem with the person pressing the shutter. I did some googling and some of the tips I saw for accurate AF with the 5d1 were to use single shot when possible (already do), use the center focus point whenever possible (already do), try to make sure the center focus box is squarely targeting an area with a lot of contrast (haven't tried that yet) and try to make sure the box is filled with an object that's uniformly distant from you/occupies the same focal plane (ie, on a distant person don't let the face fill half the box with the rest of the box filled by a wall 20 ft behind them, because that could cause back-focusing.)
Does anyone have any tips in addition to these ideas (or any thoughts on the validity of them?) I really love this camera and what it can do, and my inability to use it to it's full potential drives me nuts! ...Show more →
Its entirely possible that the AF of the camera is off a little. Canon would not have adjusted it when it was returned unless you had complained.
Since two lenses have focus errors, sending it for adjustment is the best option, and that may cost more than buying a different camera.
BTW, the focus screen has nothing to do with autofocus, only manual focus, and when replacing it, it must be calibrated and shims added or removed.
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