It looks nice enough and it does allow connecting a Nikkor F-mount ...
938406
It looks nice enough and it does allow connecting a Nikkor F-mount lens to a Fujifilm camera, but the fit on the Nikkor side is loose and the whole thing rattles as you focus.
224653
It's appropriate for what it is designed for, but I wish I would have spent the extra $ for a nicer one.
2462248
It fits, but a little loose on the nikon mount side due to the lock design on the adapter.
2451465
I would give this five stars because it looks good, and functions as it's supposed to. But there are a couple issues, which don't really affect my application. I didn't expect to need to mount this to a stud, but it requires it. Locating a stud limits your choices, but I had just found a stud for my TV wall-mount, so it was a simple matter to place it along the same stud. The "cord-hider" aspect doesn't seem to be great; there are fingers along the edges, but the cord just goes into and out of them. The end-caps are solid, so you can't run the cords out the top like I thought. I guess they'd "hide" the cords if you're going into a wall. And the shelves are a bit small, so your cords would have to bend sharply to "hide" them. Not an issue for me, but I took away a star for these minor inconveniences. Otherwise it works as advertised, the price is reasonable, and it's a good-looking piece that does the job I needed.
4720280
I used this on a 2006 F150 and Kenwood DNX6190HD.  It looks good, and mounting is nice and neat and tidy.  The picture however, is not quite as clear as you would find on OEM cameras.  I would buy again though.
1335703
I bought this unit in the hopes that it would work correctly with my Nikon D5000 and D5300 SLR camera's. Unfortunately, I cannot tell when the picture is correctly focused (it appears so in the view finder, but when I transfer the disk to my PC, it appears slightly off). This is due to the "focus" green light does not appear (as it does with my other automated lenses. Unless someone can tell me what I am doing wrong, I feel that this is only a 3-star product. I can honestly say, though, that it is well constructed and a beautiful lens, but outside of that, just collecting dust in my camera bag.
879642
Decent product at a decent price.  It isn't as optically good as a B+W, but then it doesn't cost as much.

Note: this is likely to be bought for older cameras (or true rangefinders like the Leica M series).  These cameras do not need circular polarization.  I bought it for use on a Leica M9 without checking.  I could have gotten better optics for less.  Oh well.
3875119
It does what it is required to do. Attached the EOS M camera on one side and the telescope focuser on the other. Firm fitting and no loose connection.

The aesthetics design can be improved though. The stripes on the barrel can be removed to give a smooth matte surface.
3870565
It doesn't fit into the GoPro mounts as well as GoPro branded accessories. The plastic on the tabs at the bottom is a little thicker, so it is difficult to get it into the base. That said, it works well enough, especially for the price.
3394889
It's okay. It works. It looks nice. However, I don't think it should cost $30. The wood is a very pretty color (I got the grey), but is also lightweight and fragile enough to have gotten a little banged up during shipping or production, nothing major. Some of the holes don't line up correctly on mine so one piece is a little crooked (see pictures), but I was able to get a screw in on either side so it works. In another spot where the holes don't match up perfectly, trying to put in the screw began to cause the wood to split. I skipped out on a few screws but overall it gets the job done well enough to hold my 2.5gal fish tank and looks nice. I would give this five stars if they knocked 5 or 10 bucks off the price to match the quality.
542613
Does what it should, at a nice price. Basically, it's just an L-Bracket. I had no problems fitting it to either my camera or a normal quick release bracket whatsoever. The finish is quite nice, and it has enough slots for virtually any configuration. It certainly is stable enough for tripod use in either horizontal or vertical configuration. At this price point, there really isn't anything negative to say.
253233
You get what you paid for. But far enough looks nice.
357074
I'm using this on a Sony Alpha, which accepts Konica Minolta a mount lenses. FYI, the lens thread is 49 millimeters (so it also fits a number of other Sony lenses including the 50 mm f1. 8 lens). This lens is pretty big, about 3 inches in diameter. It lets in a lot of light. Looking at a few test pictures, this add-on lens degrades image detail only marginally (you'd really have to zoom in to notice) and barely reduces brightness. It appears to have a roughly 0.8 x magnification. The " lens cap" is a flimsy plastic cover that slips on ( expect to lose or break this immediately). But it comes with a reasonably nice carrying bag that should serve to provide sufficient protection. Overall, not earth shaking, but certainly worth the price.
4619780
It seemed awesome when I opened the package. The base interchanged with my Manfrotto 128RC. But then, when I tried to attach it to my camera, I found that the threads weren't the standard size common among all cameras... RENDERING IT USELESS.
2148690
A well constructed and functional adapter. I can't get too excited about it which is why its 3 star, its ok and it works.  It is sturdy enough to hold my Newer speed light however i only use it when i need to use a PC sync cable so  I do not normally attach a flash  to its hot shoe.  Just to clarify this is not a means to fool your canon camera in to thinking a manual flash is a TTL flash. My Canon T5 i will not trigger a non TTL flash when in live view, manual flash only fires only while using the eye piece view finder.  This adapter only passes the TTL signals through it to a TTL flash if it is attached.
3399665
Looks nice attached to the lens, but like the hood attachments for the other t4i lenses, it clicks into place without much hold. It gets the job done, but it doesn't have the felt-like interior of the last one I bought for my 18-135mm lens and attaching it gives me less confidence that it'll stay in place if lightly bumped at any point beforehand. This can cause you to be unaware of the obstruction when snapping shots and it'll be after the fact that you find out some of your shots are covered around the edges because of the misaligned hood.

But as long as you check on it's proper placement every now and then, only if you're a little rough with your camera when trying to get into place for the next shot, you'll be fine. Otherwise, you'll learn the hard way and become conditioned to check on it after a few pictures get obstructed if you end up using it like me...fast to the draw to give the most time possible to lining up the shots and taking them once in position.

Even with my gripes regarding this product, it's still the best choice over any of the generic lens hoods you may find for a much cheaper price. I've only done research and not actual hands on testing, but from what I've read from other users, it's best to stick with Canon's accessories for optimal results!
209218
The dock itself is of decent construction and looks nice. Connecting my Nexus 6P is a bit fiddly, as there's no precise guides or alignment (since this is a "universal" dock). Works fine with a slim case, which is a plus.

On the minus side, it holds the phone at a really steep angle  I think a lot more vertical than shown in the picture. That means it's nice on a shelf just below eye level, but not so good for a desktop dock.

More importantly, although the dock itself has USB C connector for your phone, the _other_ side (underneath) takes an old-style micro-USB plug, with the included cable being micro to USB A. I was surprised  I expected that to be USB C as well. That would be a lot more future-proof; as it is, this works for what most people have today, but if you have a USB C laptop (or a USB C wall power brick), that's no use. And, no fast charging.