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| p.1 #8 · 17-55 sharpness for Landscape use |
If the same side of the frame is consistently out of focus, you almost certainly have a lens that needs to go in to Canon for adjustment.
This is not an unusual thing - lenses can go out of adjustment this way. I had it happen to a 24-105 of mine. I sent it to Canon and it came back working better than when it was new.
In your case, if you purchased a new lens that is doing this, it should be covered under warranty and the adjustment should be free. Or you may be able to return it to the vendor and simply get a replacement.
Do make sure that other lenses you own are not doing the same thing. If so, you could have a problem with the alignment of the camera's lens mount or even the sensor.
Ok so I received the 17-55 and noticed that I simply cannot get even sharpness across the frame for landscape shots unless I stop down to F11. The left 1/4 of the frame is somewhat blurred/smudged unless i squeeze down to f11.
With a 2.8 lens the entire frame should be sharp by f5.6 from my past experiences with other lenses. I'm a little disappointed given how this lens cost me a grand. It would be hard for me to use the 17-55 as an all around lens if I cannot get sharp landscapes at anything below f11..
Otherwise this is a stellar lens. It can allow me to use ISOs two stops lower than with my D700/24-70 combo. The soft mirror slap of the T2i with the 2.8 and IS allows me to hand hold down to 1/5 second for static objects and night street scenes.
What is everyone else's experience with the 17-55?