AF Micro Adjustment

[da_way]

Does anyone have a lot of experience doing this? Particularly with the 7D and zoom lens. I read they are mostly used for prime lens. Do people use cut out lens calibrators because $80 for a Lensalight tool is really expensive much like everything in photography.

[o0aZuMi0o]

Micro adjustment for zoom lense is tough since you have to adjust every focal length you will be using - that means, not every focal length will be adjusted. Why not just get your lense calibrated your 7D? It's probably expensive, but you'll have peace of mind that it's calibrated to your camera.

[sylpherware]

$80 is hardly expensive in terms of photography equipment

[da_way]

That's true but they send you like $1 worth of card board =\. Photography just a hobby for me now as a PhD student I don't quite earn enough to shell out yet. Also $180 lens calibration at sun camera still a bit too steep for my taste.

[sylpherware]

That's true but they send you like $1 worth of card board =\. Photography just a hobby for me now as a PhD student I don't quite earn enough to shell out yet. Also $180 lens calibration at sun camera still a bit too steep for my taste.

Someone around my area bought one, and then put up an ad that charges $25 to calibrate others' cameras. Maybe you can either find someone similar around your area, or buy the kit and setup a side job with it. You'd break even after 4 customers

[NewsyL]

I saved this expecting one day to get a body with micro focus adjustment. The goal is to eliminate any moire showing from this pattern.

http://www.northlight-images.co.uk/a...#AF_test_image

Googling moire fringe focus found a couple more links....
http://photo.stackexchange.com/quest...-adjust-a-lens
http://www.komar.org/faq/camera/auto-focus-test/

.
Found this going through my bookmarks...
http://focustestchart.com/chart.html

and this....
http://www.bobatkins.com/photography...s_testing.html

These last two are variations on the 45 degree chart.

.

[pulsar123]

Instead of spending 80$ on a target and then many days trying to do AF microadjust manually, get the automatic microadjust software FoCal by Reikan - from the link below you can get it at discount price (40$ for the Plus version, which already does fully automatic lens calibration). Make sure you have a laptop which satisfies their minimum requirements. It comes with a printable PDF target.

http://www.reikan.co.uk/focal/mbp45/

There is a long discussion group about this software at POTN:

http://photography-on-the.net/forum/....php?t=1105193

This should work very well on your 7D. Works well on my 50D.

[klam]

I think microadjustment is necessary to get the best out of your lenses. I've used LensAlign, FoCal software, and FocusTune software. They all work more or less the same to varying degrees.