Despite the mention in the description, saying that is not good for wide angle lenses, I purchased it for a Viltrox 16mm f:1,8, EF mount. The results are outstanding across the entire range of the filter. No X cross, no vigneting. At least for this specific lens, the filter is perfect. Is true, the size of the barell is twice the size of the front lens, leaving enough room for any kind of filter.

The adapter works as expected. I was able to fit an old Pentax Lens to my Canon R5. The fit of the Pentax lens was tight, so I had to turn it with a bit more force than expected until it locked in. After overcoming my initial hesitation, it was no problem to connect the lens to the camera.

I want good UV filter for vintage lens and perfect quality! Good price

Filter built is decent and also quality seems fine, but there are 2 things you should consider before buy (I did not and I regret it): 1/ filter end is bigger than filter thread, so you cannot use original lens cap from the lens (so everytime you have to remove filter for safety, loosing time and flexibility) 2/ thanks to bigger diameter of the filter and extra knobs for changing ND, you cannot attach the lens hood, which I did not realized and probably will need to buy another NDs...

fisheye separat nicht montierbar

It's good for my kit lens.

not practical when you have lens

I am old enough to have learnt formerly photography the old way, having to juggle the relationship between film speed, shutter speed and aperture along with darkroom techniques and filter effects. Since I went digital however, (my current camera is a Nikon D3100 DSLR with two lenses (18mm-55mm and 55mm-200mm)), my photography has not really been quite as creative as in the old days, just more a matter of recording rather than much in the way of arty’ness.Now, thanks to the generosity of the nice people at K&F Concept, I received this set of filters to play with in return for an honest review. All have a standard 52mm double thread but, as with all filters, be careful stacking them as you will inevitably get some vignetting at shorter focal lengths.This set comprises:A simple UV filter / lens protector which, as far as I can tell is no different from the more expensive Hoya Pro item I generally have on both of my lenses.Three densities of neutral density filter. These are great when the camera is set for aperture priority to reduce the shutter speed, blurring any motion in the scene such as moving cars at dusk and waterfalls: real arty stuff and an amazing effect if you’re used to the usual frozen action created by the default camera settings. Having three to play with allows for plenty of bracketed exposures (yep, gone all old-school again…) to get exactly the desired effect. However, a tripod and using the self timer are essential to reduce camera shake.Three different graduated colour filters (grey, blue and orange). The blue is great for making the sky bluer than it really is (really useful in the UK!) and the orange is excellent for atmospheric dawn / dusk shots. The neutral density grey is brilliant for reducing the brightness of the sky to improve exposure, preventing under exposure of darker ground features.A flower petal lens hood which is handy for reducing flare when shooting towards the sun. It is not too bulky and works well but it makes getting the lens cap on and off a bit fiddly.Finally, a centre pinch lens cap. This is an advance on my Nikon equivalent as it has a loop and keeper to enable it to be attached to the camera strap – a vast improvement over putting the cap in your pocket and/or dropping it.The whole kit is rounded off with a neat & stylish velcro fixing case with elasticated webbing pockets and a handy microfibre cleaning cloth. If I’m being picky, I would like to have seen one or two of the neutral density filters replaced with a circular polariser and a starburst filter to provide a truly versatile general purpose kit, but, as it stands this set is an excellent introduction to the world of photographic filters to the budding photographer and occasional use amateur; good quality filters and excellent value for money.