Tamron 58mm Front Lens Cap

I can finally swap lens caps without taking the hood off—such a simple but brilliant design. The snug fit gives me peace of mind when I toss my camera bag around.

Finally, a lens cap that doesn't pop off in my bag every other week, and I can actually swap it while the hood is still attached. It's snug enough that I don't worry about it sliding off mid-shoot, which is more than I can say for the last three generic caps I tried.

I can pop this cap on and off with the hood attached, which is such a timesaver when I'm switching lenses in the field. It's snug enough that I haven't had a single surprise drop in the three months I've used it.