Canon lenses

[JohnR]

I have a T1i and it takes good pictures with the fixed 50 mm lens and the 18-55, but with the 24-105 and the 28-135 the pictures are less quality. On the D60 all 4 lenses work well. Does this mean the newer lenses are not meant for the older camera?

[Andy Stanton]

I assume you're referring to the Canon 60D.

The 60D and the T1i have the same size sensor (though the 60D has more megapixels, 18 vs 15) and both use the Digic 4 processor. There's no reason I can think of why they should get such different results with your 24-105 and 28-135.