Not for the faint of heart - DIY 350D backfocus fix

Started Dec 1, 2007 | Discussions thread
Colin Peart Regular Member • Posts: 193
Re: disagree...Re: do *not* try this in sensor-clean mode

If you don't want to manually hold the mirror up, you could use the custom function mirror lockup mode -- that way the camera holds the mirror out of the way, but the sensor is protected by the shutter.

Is there a similar screw to adjust the optical path through the viewfinder? My autofocus is dead on, but I appear to have backfocus issues if I rely on my eyes (aka manual focus). Mind you, despite my testing with a focus chart, I still can't decide if the problem is the camera, or my own eyes. At first I thought it was the camera, but as I ran more tests, I got better at focusing it manually, and I started to hit some right on... I plan on getting someone with better eyes than me to check it out before I consider talking to canon about it.. from what I can tell here, sending it for service is a little hit-or-miss.

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Colin Peart

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