This is a typical Leica quality product that we all just naturally expect from Leica. Lenses are of course fabulous. It is especially nice versus binoculars because it is so portable and easy to stick in a pocket. The waterproof part is great.

I don't no what some of you are talking about saying it dose not work with sigma. It dose work with both of my Sigma 70-200mm sport and 150-600mm Sports but the Auto Focus dose not work with I don't mind and it dose not fall off. I love it and it works really well. I just got it.

I ordered the 52mm filter because the 30mm f1.4 sigma lens for sony e-mount cameras has a 52mm thread but after lens arrived, I couldn't fit it on.But after-service support was pretty helpful in telling me this

This adapter did the job! I can now use all my Canon, Tamron and Sigma lenses on my new Canon m50.

It may fit some of the Sigma lenses, however without the automatic focus.It focused easily and perfectly with Canon lenses

Why i first went with the Sigma 35 i have no clue! Ended up getting this one after my sigma took a fall and was getting repaired. I know am selling my Sigma 35m because it can't compete with the canon version. Its worth every penny.

Sigma makes great lenses and horrible caps. Both 35 and 85 lense caps wouldn't stay on. This one goes on and stays on. Looks good with my Sony camera too!

These work well with my Sigma and Nikon lenses and lens caps as long as they are stuck to a flat part of the lens cap. There is a little bit of thickness to the foam adhesive, so the surface doesn't have to be perfectly flat. Just be sure that the surface is clean and you press and hold the adhesive down for 30 seconds or so to ensure a good seal.I haven't tried to remove the adhesive side so I can't rate that, but the elastic works well for the Sigma Art 18-35 mm and Nikon 35 mm and 50 mm lenses.