Is my 10D or my lens defective?

[bmccall]

Just received my 10d and am very disappointed in the results. Only about 5% of my autofocus shots are actually in focus. Could it be my Tamron SP AF24-135mm F/3.5-5.6 AD lens or is it the camera?
Images are soft and out of focus. I can manually focus for better results - autofocus it off indoors and out.
Please check the examples on the site listed below and let me know your experienced opinion. I have no other lens at the moment to compare by, but my minolta S404 4MP outperforms my new 10D as shown in the cat photos. I never had this problem with my old Minolta 35MM autofocus gear.
Photos are here:
http://www.bradmccall.us

Thx,
Brad

[SBrooks1]

I seem to be having similar problems. Take a look....

http://photography-on-the.net/forum/showthread.php?t=9008

[bmccall]

The problem appears to be my Tamron SP 24-135 lens. I borrowed a friend's Canon 28-70 lens and had absolutely no problem at all with the auto focus on my 10D. I'm replacing the Tamron with a Canon 28-135 IS - I'll post my findings when it arrives.
Brad

[bmccall]

Received my Canon 28-135 IS lens today and initial testing confirms that the Tamron SP 24-135 lens was my problem. The Canon auto focuses properly where the Tamron would not. Either the Tamron was defective, or it is not compatible with the 10D.
Brad

[bmccall]

Turns out several Tamron lenses are not fully compatible with the 10D. Here is a link to the Japanese Tamron site with info.
http://babelfish.altavista.com/babelfish/tr?tt=url&url=http://www.tamron.co.jp/data/dsc/eos10d.htm&lp=ja_en

(You may have to copy the whole link to open the proper page)

Brad

[Longwatcher]

Well that confirms one of the two reasons why I gave up on my Tamron 28-80 lens. The page references indicates that I should only use it in manual focus mode.
That and the distortions not present in the Canon 28-135 lens.

Thanks for the link.

[jgbryan021900]

Just recieved my 10D on Friday 4/25/03. went to the Zoo here in NC and spent about 3 hours taking bird photos in the avairy. Got home and about 90% of my photos were very soft. Outside photos of the Polar Bears and Sea Lions were fine, discovered that when using the Sigma 28-300 asp lense you must use an F-stop of F8 or higher to get good photos. I thought my 10d was defective. I'm going to rent a Canon lense from the local camera shop here and see if I get the same rusults. I have seen that other people with Tamron lenses are having the same issue.