Originally posted by GSk I have not not noticed any change in iq, but my thougth/fear is that when there is some play, lens elements will be in "disorder" and that it must affect quality. I hope that I am completely wrong about this, of course
Check it out, do some test shots. My Sigma 24mm F1.4 has some from play and it doesn't seem to affect IQ. Of course I bought the lens second hand and it's always had this, so I have no "before" to compare it to. But it seems to be doing quite well.
Since you've shot with the lens before, is there anything that you can go back to and try to recreate the first shot? That might give you a pretty good 'before and after' comparison.
NaCl(it would be a hoot if the lens is significantly BETTER after being dropped)H2O