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Old Dec 6, 2008, 8:58 PM   #41
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Have you thought about letting someone else use your camera? If you have a friend that knows how to use DSLRs, maybe he or she could offer a new perspective. I know how hard it is to get away from pre-conceived notions about what a new toy should do. I felt that I was having similar problems with my XSi, but now that I've used it a bit more and moved away from my tunnel vision opinion where I was expecting the camera to work like magic, I'm much happier with the results.

Just a suggestion.
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Old Dec 6, 2008, 10:07 PM   #42
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Granted your reply didn't necessarily apply to my post, but I do have a friend here who has an XSi... I'll try out a focus test with that body and see what happens.

But as far as my situation goes in general... I'm left with focus tests and [indoor] shots that point to some focus issue. Whether me or the camera... still haven't figured that out yet.
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Old Dec 6, 2008, 10:20 PM   #43
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I'm not suggesting that you try out another XSi. I'm suggesting that you let someone else use your camera (in real life, not via mail assessment). In order to discover a real problem, you need a new set of available eyes using your equipment. The Canon crew checking calibration and all that crap are far-removed.

You need to have someone else use your camera and lens, and then offer an opinion.
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Old Dec 6, 2008, 10:38 PM   #44
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Right -- my bad.

I'll have him try it out, then, and see what he says.

I'll also try to find someone who is familiar with Canon who might be able to offer a third set of eyes.
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Old Dec 6, 2008, 10:52 PM   #45
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Let us know how it works out. I'm very curious myself.
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Old Dec 6, 2008, 11:51 PM   #46
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Out of curiosity, what do you see in my posted focus tests --

IS was off on all four tests, I cranked up JPEG sharpening to full (I did, anyhow, before I got an ERR 99, but an off-on reboot solved that. I didn't double-check to see if the reboot undid my settings).

Auto-focus was was center point; manual focus was through 10x LV with the LV mode set to Live View (rather than quick). Taken at an approximate 45° angle (angle between camera lens and subject plane) on a tripod. Mirror lock-up enabled.

***

Ruler test: center AF point was set to the 6" mark.

Ruler test -- AF
https://netfiles.uiuc.edu/xwang22/Ph...20--%20AF.JPG;

Ruler test -- MF through 10x LV
https://netfiles.uiuc.edu/xwang22/Ph...20--%20MF.JPG;

***

Nikon D70 focus test page: focused on as the instructions said... on the black line in the center of the page.

Focus test -- AF
https://netfiles.uiuc.edu/xwang22/Ph...%20--%20AF.JPG

Focus test -- MF
https://netfiles.uiuc.edu/xwang22/Ph...%20--%20MF.JPG

?

Are there any conclusions, however preliminary, that you would gather?
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Old Dec 13, 2008, 3:40 PM   #47
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Hey Burnout,

I just had a friend who shoots with a 5D try out the camera, and he came to the same conclusion I did. His 5D obviously isn't compatible with my 17-55, but the 50/1.8 came in slightly front-focused for him as well.

Some more tests: I apologize for the reflection down the center of the batteries -- I didn't have a table an appropriate height and the light just glared from the front.

Center AF and focused near the center batteries... I can't remember if the AF dot lined up with the space of if the batteries were shifted enough that I managed to find the actual front surface of the battery.

17-55:
http://netfiles.uiuc.edu/xwang22/Pho...sts/17_AF.jpg;

http://netfiles.uiuc.edu/xwang22/Pho...sts/28_AF.jpg;

http://netfiles.uiuc.edu/xwang22/Pho...sts/55_AF.jpg;

50/1.8:
http://netfiles.uiuc.edu/xwang22/Pho...sts/50_AF.jpg;

70-200:
http://netfiles.uiuc.edu/xwang22/Pho...sts/70_AF.jpg;

http://netfiles.uiuc.edu/xwang22/Pho...ts/116_AF.jpg;

It seems that my two smaller lenses are the culprit, not the body. I did a test with a 35/1.4 L and its focus was better than in my tests with my 50/1.8 and 17/55:

http://netfiles.uiuc.edu/xwang22/Pho...sts/35_AF.jpg;

Therefore, with this information, I might just ask Canon for a shipping label and send off the lenses for calibration. The question: is it irrational to fear shipping brand new lenses and a brand new body just for calibration? Will they come back dinged up or molested? Again, this could be an irrational fear of mine -- that only I am capable of taking care of my possessions as I want them taken care of -- but looking for reassurance nonetheless.
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Old Dec 13, 2008, 3:52 PM   #48
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That sucks about your lenses needing calibration.

If I were you, I'd find out if the shipping destination is anywhere within driving distance. For me, for example, it'd likely be in Toronto... and I'd rather drop off my lenses when I'm in the area, as opposed to shipping them. But I might also be paranoid.

If you doship them, take some photos of them beforehand, from different angles. Then pack them well. If they come back scratched, you'll have the evidence.
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Old Dec 14, 2008, 12:40 AM   #49
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Yeah, I'll definitely take some shots before I send them away (there are no repair centers in the vicinity of Urbana, IL, as far as I know).
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Old Jan 8, 2009, 11:53 AM   #50
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I had poor image quality and focus issues with my new XS with kit 18-55 lens. Canon said I could send them in but I returned it to the seller.
I did come from a point and shoot but I use to shoot SLR in the film era with good results.
I am sure if you get a good copy, you are covered but if not just send it back. I am sure Canon doesn't want to spend a lot of time on calibrating their inexpensive lenses and cameras.
I have ordered a Pentax 200d. I will do a comparison test once I get it.
I would expect in the auto mode that a DSLR should give better pictures than a P&S in most cases, DOF being an exception. But to constantly front focus like my XS did even when it was focused on other subjects is not acceptable. I tried hundreds of shots at different settings and was not happy with any of them.
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