can you believe it??? I was brave enough to give the tubes another try today & I didn't get them stuck on this time, didn't get a good sharp picture either, but I shall not give in...maybe :) this one was the best of the bunch. I'm having lots of trouble getting the focus with these tubes...it's so dark looking through the viewfinder & I've had to slow the shutter speed right down so that I can get some light into the photo. Sorry but didn't get a chance to get anything else tonight so this will have to do.