Tonight, in a quest to shoot the Harvest Moon, I tripped and my 6 month old Nikkor 200-500mm 5.6 landed on concrete on its lens hood. The lens hood broke in half and when that happened the hood must have slammed in to the body of the lens hard enough to put a few cracks around the housing of the lens behind the glass which I had a UV filter on. I am not sure of what can and cannot be fixed when this happens as I’ve NEVER had an incident like this before. I did end up trying the lens after the accident and it seemed to work fine but will need to look close at the resulting images to make sure. Any advice how to proceed? Or just buy a new one? Anyone in the market for a lens for parts? Sigh...

I just picked up the infamous D850 from samys I have lbeen ooking forward to using this beast on fall colors.
It took me a day or so to realize how tight the lens mount actually was, well it is at least 2x tighter then d810 ever was and makes a slight grinding noise on all my lenses.
Then after reading on the internet that didgloyd had found that some hard stop lenses will not focus to infinity. So I decided to test out my zeiss lenses on night sky stars wide open and found the that at wide open I could not get two of my lenses to focus at infinity? And the others where super close but just barely focused.
Some may ask why would anyone need to focus to infinity wide open? Only reason I do is for widescape Astro, and then this becomes an issue. Even so the tight lens mount is enough for me to return it.
I feel quality control with most things these days is lackluster at best! Be it cameras, lenses, or anything.
out of the four zeiss lenses I bought, 2 were broken. I still need to send one in. Never have I had an issue with Nikon lenses. And this is the first camera I have ever had a problem with,
The old saying you get what you pay for is a bit out dated for me.

Was out in the field photographing waterfalls, switched lenses to my EFS-10-22 wide field lens, turned the camera on and ...ERR 20 "shooting is not possible due to an error". Turned off camera, tried again, same error. Switched back to my EFS 18-135 lens. No problem. Cleaned contacts on my EFS 10-22, tried again, same error. Switched back to 18-135, no problem.
When I got out to a spot where I had cell reception, I looked up ERR 20 and most solutions said to turn off camera, remove battery, remove lens, try again. Error apparently is some mechanical issue with the shutter that usually requires a service call. Did multiple times, didn't work. Put on 10-22 lens again. Still got ERR 20. Removed lens, happened to notice a small 1" o-ring sitting off-kilter over the camera mirror. Looked at the lens and something looked a little different. Turns out that the o-ring is part of the inner mating surface of the 10-22 lens and had come loose. Replaced the o-ring on the lens, put the lens on the camera, and no more ERR 20!
Haven't seen this listed as a possible solution to ERR 20 problems, so thought I would share it. Looked at my other EFS lenses and they don't seem to have a removable o-ring, so maybe that's unique to the wide angle item.

No I think it was one of the folks you mentioned, I am not that knowledgeable on the subject I just goggled a bunch of the articles and came to the conclusion that much of the articles are older by a couple years it is an interesting subject though it never occurred to me until you brought it up, and I am bored to death here in the hospital I was heading out to go shoot a couple local petroglyph sites and took a bad fall in my driveway, threw my hip implant out of wack they may have to do a corrective surgery or a replacement the metal went bad 6 months after they put it in back in 2007 have been doging the surgery but may have to have it done now will know more around thursday they are telling me, it;s hell to get old and have a body that's falling apart.