[Front] I started using these over 20 years ago and still do for all new lenses. They last and are well made and stay on very secure

[48 mm] I have a vintage Nikon 500mm mirror lens that was missing the original cap; it's a weird size, 88mm; gave this a try. With a layer of fabric tape on the inside rim or the cap it fits fine.

[48 mm] These are nice and snug, and they fit perfectly!! Why couldn't Bushnell come up with these in the first place?! They're great... I recommend them wholeheartedly. They fit much better than the caps that originally came with the scope.

[48 mm] Wow!

[48 mm] The generic lens cap fits well on my old lenses. It is rugged and does not fall off.

[48 mm] Works well so far. If you have a tight fitting case it can get caught and get pulled off, but that's true of any push-on cap. Seems a bit expensive, but it was the only option they had.

[0.015 lb] This cap fits very smoothly and snugly on the B+W 46 mm filters. I love these caps, especially for lens storage. They fit very well and protect lenses well and don't easily fall off and get lost. They are a lot less rattly than the pinch style caps. The only thing with these caps is you have to measure the outer diameter of whatever you need the cap for so you can get the correct cap since these go over the outside of the lens or filter. I also love how these caps fit even if your filter or lens does not have easily accessible or has recessed filter threads. The cap I got now has an updated and more modern looking design embossed on the front of the cap with the modern Schneider Kreuznach logo. Some of the older ones I have have the older logo. You can't go wrong with either. It's subtle and looks at home on the front of any lens from large format lenses to some nicer small or medium format lenses and cameras. The cap is domed, and will protect your lens even if the front element is flush with the top of the filter ring. It's also pretty deep, so it isn't too easy to dislodge it accidentally. It definitely will not come off in your bag. It is easy to take off and put back on if you are using it in the field, but in the field I tend not to use lens caps and just keep my front filter on to protect my lens from sticky fingers and mud. Of course these aren't as perfect as the SK Grimes custom caps, but for the something that comes in standard sizes, and for the price, these are well worth it.

[0.015 lb] Fit perfectly over the end of my telescopes but pricey but I'm not found any other place that even carries 92 mm

[0.015 lb] Perfect fit on a range of E46 lenses. Best lens cap IMHO. Light. Does the job. Looks classic. Typography is different than the picture, but still nice.

[0.015 lb] This is a great cap for Olympus lenses that use 46mm filters, like the 12mm f/2 and 17mm f/1.8. They fit perfectly, and come off without searching for the pinch tabs. The loop at the edge lets you tether it with a simple lanyard that looks better than the stick-on type, too.