warzone wrote:
While I appreciate the input from anyone, I haven’t seen, and perhaps it was my fault, my real question. I was concerned about leaving the contact points which are normally covered when the lens is properly attached. Reversing the lens leaves this points open to dust, debris, etc. Any comments on that point?
I would use some sort of protection over the contacts (even electrical tape) and/or any opening down into the lens, and bulb blow off prior to normal remount. I think this a legitimate concern with modern lenses. Look at the camera end of your lens and let your imagination help you DIY a solution. Perhaps a cheap lens cap with center cut out, if nothing else, would protect the entire end of the lens. Let your DIY-ness prevail!! Imagine if if touches some dirt, goo or worse....don't want to remount without inspection....