Doh, ha ha, actually, from this latest past shoot, the full body shots with the 50mm were sharp, it was actually the 18-55mm IS kit lens that didn't focus well, even at like f/3.5! Still, I have gotten them often enough to be a bit scared, so I am upgrading to something with USM just to be safe
Here is one I got from a previous shoot, at f/1.8:
It almost looks like you focused on the front of the bricks and then recomposed on her, but at that distance to subject it shouldn't be that horribly off.
upgrade to something with USM if you need/want USM, don't expect it to automatically focus more accurately. (I currently own 3 non-USM lenses and they all focus as reliably as my L-lenses did).
You shouldn't be getting shots with such blown focus from that lens IMO... either your lens/body has a problem or your technique does..
Was this model's face, chest in significant shadow coverage? She's standing in shadows and there's this awful highlight in the BG.
It could be that the camera saw the bricks as having best contrast characteristics and focus on the lines instead. The center AF point may be pointing at the sweater and has nothing to work with.
it seemed u focus the wall next to subject for this shoot, i suggest use single AF point for shooting with fast aperture, point AF point to subject eye.
Thanks Luant16, well, I do point to the eye using single focus point, but when you are so far away, the whole focus point covers the face, and I guess when that far away, there is not much contrast for the lens to focus on...
AF for wide apertures at any substantial distance for any of the Canon 50mm's has not been very reliable. This has been well documented if you do a search on this forum. I was hoping Sigma's latest offering would do better, but initial reports show similar AF issues.
AF issues on the 50mm's is why I currently don't own a 50mm and so can't help you there. The 50mm's are fine if you don't mind MF. I personnally use my EF-S 60mm f/2.8 macro but bokeh is limited by the f/2.8.
4honor wrote:
Thanks Luant16, well, I do point to the eye using single focus point, but when you are so far away, the whole focus point covers the face, and I guess when that far away, there is not much contrast for the lens to focus on...
well it happened alot of time when you shoot with larger aperture (subject not in focus), i suggested shoot 2-3x for the same subject and pick the best one.
