(5 Pack) EOS EF Rear Lens Cap Camera Body Cover Set, Camera Body Sensor Dust Protective Cover, EF EF-S Mount, Compatible with Canon EOS EF DSLR 1D 5D 6D 7D II III IV 90D 80D 4000D 2000D 1600D 1500D

These are dangerous unless you modify them. So There. I’ll tell you how I fixed mine momentarily.The good news: Less than two bucks a piece and you get them in two days! On top of that, they come with body caps. So, for my six bucks, I got three rear caps and three body caps. Woo hoo.The bad news: These are made of stiff, brittle plastic, not the tough, resilient kind that real Leica/Nikon/Fuji/whatever rear caps are made of. I think we’re talking general-purpose polystyrene here. The cheapest plastic on planet Earth.And the depth from the flange to the bearing surface on the bayonet lugs is over spec. So, the cap fits too tightly. You can’t turn it to engage the bayonet. Which means if you ever accidentally pick up your multi-thousand dollar lens by the back cap, the cap will let go and launch your lens to the pavement.I fixed mine by simply sanding a few thousandths off the back of the cap until it fit properly. I just held the cap on a piece of course sandpaper and made about 100 little circular strokes. (Your sandpaper, arm and even the caps themselves will vary, so sneak up on the first one: 25 -50-75- strokes and so on.) I then used an X-Acto to smooth, deburr, and ease the edges and I was good to go.Will the cheap plastic wear out really fast? Probably. But two bucks. Who cares? We all know the cigarette lighter method for tightening worn back caps, right? But watch out. That styrene will burn like a torch. Go easy.The body caps didn’t need any modification and seem to me a good alternative to the now-collectible and none-too-safe Leitz ones with the metal bayonet lugs. I had some of those. I’ll use these instead. So that was an unexpected win, I’d say.