Out of focus 60D

Sticking with original canon lenses is your best bet for focus accuracy. I have a tamron 17-50 thats an absolute nightmare when it comes to focus accuracy. In low light, focus is all over the place and as subect distance passes 3meters, it frequently front focuses. All these things can not be fixed by having a camera with MFA. If its one thing i regret its buying 3rd party lenses.

boerewors wrote in post #16124808
Sticking with original canon lenses is your best bet for focus accuracy. I have a tamron 17-50 thats an absolute nightmare when it comes to focus accuracy....

In contrast, I also have a Tamron 17-50 (Non VC) that I use all the time on my 60D as my standard carry-around lens and I couldn't be happier with it. It also has great reviews, so maybe you just got a bad or damaged one.

The Tamron 70-300 is good with the T2i at all focal lengths. It is good with the 60D when using the Live View. A problem is only on the 60D at about 300mm with AF.

I think I am going to wait for the 70D to come out, and get it so I will have the MA. I thought of getting a 6D (and 5DIII), but I do not want all this hassle of selling the crop lenses and getting full frame ones, replacing the SD cards with CF's, etc. Besides, I want more reach, as I like shooting birds.

I may take another look at the 70-300L, but I am afraid it is a heavy thing, 1.5 times heavier that an already heavy Tamron.

teekay wrote in post #16124967
In contrast, I also have a Tamron 17-50 (Non VC) that I use all the time on my 60D as my standard carry-around lens and I couldn't be happier with it. It also has great reviews, so maybe you just got a bad or damaged one.

i have sent mine in for calibration/repairs twice and that did not solve anything for me. You could say i have a bad copy and thats the gamble of buying a non OEM lens, which is why i said "your best bet" is with canon lenses and not a body with MFA.

Lbsimon wrote in post #16125273
The Tamron 70-300 is good with the T2i at all focal lengths. It is good with the 60D when using the Live View. A problem is only on the 60D at about 300mm with AF.

I think I am going to wait for the 70D to come out, and get it so I will have the MA. I thought of getting a 6D (and 5DIII), but I do not want all this hassle of selling the crop lenses and getting full frame ones, replacing the SD cards with CF's, etc. Besides, I want more reach, as I like shooting birds.

I may take another look at the 70-300L, but I am afraid it is a heavy thing, 1.5 times heavier that an already heavy Tamron.

Most MA won't help if a lens is good at one end, but not at the other. Sigma's new 'USB' dock will allow you to do different MA's at different FL, but otherwise your out of luck. And just because it works on one camera is absolutely no guarantee it will work on a different camera, especially with 3rd party lenses - remember they have to reverse-engineer the signals from the camera to the lens.

Many of us with fast lenses (that often need MA) know that it is not necessarily consistent even between cameras and lenses - for instance I cannon ascribe an average 'camera MA' and 'lens MA' to my lenses that accounts for the MA adjustments I have to make on both the 5DII and 7D.