>Which screw does this refer to? (I can see quite a few when I roll back the sleeve)
Hi Joaquim, I don't know of a screw that you can tighten to alleviate the problem. I have a couple of these lenses as well (all three of my Grandfather mountain slides that placed in the competition were taken with this lens). It is a great lens. My solution to the lens creep problem is to carry some sticky labels and affix one between the lens and barrel (is that the right word?) to hold it in place. I've seen others use a rubber band as well. Hope you find this helpful. Charles

