Xume MFXLA82 Lens Adapter 82mm, Black, Compact

i've been using thses adapters for several years and they are great

Just what the doctor ordered. I just got this along with the filter holder, but so far, so good. They work as expected. This will allow me to change filters much more easily and quickly than the old-school thread system.I was concerned that they might be easily knocked off. It *could* happen if you bump into something at just the right angle, but the filter holder sits down into a recessed area in the lens adapter, so a lateral strike isn't likely to knock it off. The magnetic attraction between the two seems about right; not too strong for easy removal, but not so weak that it would be bumped off. If you're concerned about it, I'd recommend keeping the lens hood in place. The adapter and holder are designed to allow the lens hood to be put on and removed easily anyway, so the hood should provide adequate protection.I would definitely recommend this and the filter holder if you have a habit of switching filters often. They will save you a lot of time and hassle.

Nice idea. However, I can see where some of the fall down reviews are coming from. When you put this on your lens, you cannot have a protective UV filter on, because it creates too much of a gap that might cause lens flares. One annoying thing is that, with the adaptor on, your lens cap may not fit properly. I've had my lens cap fall off a couple of times with this adaptor on.

Installed the Xume lens adapter on top of the UV filter on my Canon EF-S 18-135mm lens and immediately noticed some vignetting at 18mm. After adding the filter adapter, the combined thickness of the lens and filter adapter was roughly 6.5mm causing vignetting up to about 28mm before I even added a filter.I had planned to use the Xume adapters in conjunction with my 67 to 77mm step-up ring so I could use my 77mm filters inside my lens hood. With the filter adapter mounted on my step-up ring, I was able to drop the step-up ring onto the lens adapter with the lens hood installed so in this regard it worked perfectly. Ironically, the combined assembly of Xume lens adapter + Xume filter adapter + step-up ring + filter resulted in the front of the filter extending so far forward the lens hood actually didn't offer much protection from flare.

Simply put this adapter is of no use on a breakthrough ND filter. I have not tried it with any other brand.