have a Sony A7iii and I was looking for a good adapter for my 2 Canon lenses, 85mm f/1.2 and 11-24mm wide angle lens. This K&F Concept Adapter fits my Sony A7iii well and supports the lenses. I was skeptical about the sharpness of the photos. However, this adapter really nails the sharpness. It's better not to use the widest aperture, because lenses from other manufacturers work extremely poorly. Both sample photos were taken with this adapter. The shot in Florida was taken with the wide-angle lens. The mountains are recorded with 85mm. Autofocus is excellent on a 7iii body, so I didn't see any significant difference between using the adapter and the native lens. Eyefocus works very well even in low light conditions. The good thing is that I was expecting a lot of vignette, but I was surprised to find out that this lens doesn't produce a large amount of vignette. So the bottom line is that you should give this adapter a try. It fits well, not too tight like some cheap adapters. The build quality is really good. Happy clicking!

Mounted on a wide angle lens, the rendering on water / lake pictures is perfect.
Rigid carrying case to avoid damage.
Good image quality. I did not notice any vignetting or color modification.

Hello everyone! Hope you enjoy your monocular life. I have some information for you today. This monocular isn't bad, but I was concerned about backlight flare. So I decided to install a hood. Let's finish. 54mm, folks! The 54mm fit perfectly! The body's rubber cover was moved slightly to reveal the screw hole at the top and a 54mm to 55mm step-up ring was fitted. (... It fits my case smoothly, but please do so at your own risk.) In my opinion, the flare seems to be much better and the sharpness of the image has improved. I would like to think that the effect was more than investing less than $10 and risking losing some portability. And what's more! You can use CPL filters and all sorts of other filters as many times as you like, and you can potentially attach a teleconversion lens to play with, although I doubt it will work properly. It's a dream come true... Uh? Am I the only one dreaming like this? In the meantime, I've uploaded a photo of an attached 55mm camera lens hood if you'd like to take a look. Also some cute birds. ▼ ▼ ▼ ▼ ▼ ▼ ▼ My hobby is observing and photographing wild birds with monoculars and smartphones. Sometimes I use a tripod, but I prefer handheld when possible. I used Nikon 6×18ED but it was too dark. So I bought this one which uses a 50 diameter ED lens. The 50 diameter lens size was very effective for my purposes. Bright! It's bright! Unfortunately, the chromatic aberration was quite large and the effect of the ED lens was not as high as I expected, but maybe my expectations were too high. Or maybe the price is right. As you take darker images, the aberration becomes much less noticeable. It is still in the testing phase, but you can check it in the attached photo. I think it's a good value monocular for those who think this level of photography is sufficient. I'm also happy with the price. However, I plan to test it with the [Opticron dba vhd+ 10x42 monocular] or [VANGUARD VEO HD2 1042M] for another jump. What? Are you saying it's wiser to buy a good camera? Ha-ha-ha-ha! I used the Huawei P30 Pro. The video was recorded with the standard lens, and photos were taken with the 5x telephoto lens. (Standard lens is 500mm with digital zoom x 1.6, telephoto lens is 1620mm) Slow motion shooting is recommended as handheld video footage can be blurry. It's also useful to use a dot sight together, even if it's a cheap sight. It also makes it easier to spot wild birds if you're spotting them. Well, I wish you all a better monocular life!

Actually, I'm not a fan of super wide-angle photography: Everything that goes over 24mm doesn't have to be. Nevertheless, I needed this lens for a specific purpose: Milky Way photography. However, since I can only run it once or twice a year, I didn't want to spend huge amounts of money. This lens gives great results with the Canon 6D. My recommendation: stop down one stop to aperture 4 and ISO 3200/64000 with an exposure time of 25 seconds. The small gain in sharpness easily compensates for the loss in light intensity. The latter can be compensated to the same extent in post-processing, but of course not sharpness. This also gives you a bit better control of the coma (which is hardly a problem with this lens anyway).

The filter works best if you have a lens that is greater than 35mm. When the lens is too wide angle is when you get the X looking area

Got this to reduce overexposure with wide angle Canon 17-40 4L lens. Very happy with the results so far and it's really great for long exposures. I've been a K&F lens filter for a number of years and these have been my primary ND filters.

Hi use the filter on my wide angle lens. Unfortunately, at the max setting, a lens flare forms, which unfortunately doesn't look so great. At min setting it is ok (no lens flare) Processing is super. Unfortunately only conditionally usable. ML

I bought this ND filter for my wide angle lens and am very satisfied with one thing. The filter is well processed and makes a high-quality impression. But when the filter is on the lens, unfortunately the lens hood no longer fits on it because the front ring is slightly larger than the lens diameter. So far I could not see any color cast in the pictures I have taken so far.