58mm - 67mm, 58-67mm Macro Close-up Reverse Ring, Anodized Black Metal Ring, for Nikon, Canon, Sony, Olympus, Pentax, Panasonic, Samsung Camera

This item works flawless, rigid construction, threads easily into my lenses etc... However the technique to use a reversing ring will cause you much hassle. Trying to use your hands while taking pictures that will be that highly magnified ( two 50mm lenses ) is almost impossible. Setting up a tripod to take your shots well that's kind of annoying but you get results. Trying to get an image with a use able field of view have fun with that. Sure you can get really cool images with this but it will take a lot of work and it's not the rings problem it's the technique. Also be aware you might want to support your lenses hanging a whole lens off the front of another lens that has a plastic focus ring the reversing ring is the strongest part of that whole connection. I took a pictures of "dried flowers" and you could see micro structures but all but 10% of the image was horribly out of focus because of the severely shallow depth of field when using backwards lenses. A better option might be the reversing mount so you can put a single lens onto the body its basically a body cap for your camera with a hole cut in it glued to a filter holder for your lens so you can put a single lens directly onto the body in reverse. You don't get quite the magnification but it's amazingly easier to use.

Great little gadget that does exactly what it's supposed to. Nicely threaded so I had no issues attaching it to lenses. The only problem is it doesn't fit incredibly snug. You could really tighten it down, but I didn't want to get to the point where I was deforming any threading, whether on the lens/filter, or the ring.As for how it helps with macro... 50mm 1.8 reverse mounted onto a 70-300mm. At various zooms, you get incredible magnification. At 300mm, it's ridiculous. You need a tripod, good lighting, and something interesting enough to capture at that magnification.

Took back a $1000 Macro lens from canon, and got better shots from this bad boy.Linked a 85-200mm 15y/o kit lens with extension tube and 40mm pancake reversed, and i'm getting 10x mag.remember, you need a good tripod, F11 on reversed lens, and lost of patience.To set the F-stop to reversed lens, put it on the camera mount, set the F-stop F11 seemed to work for me, and hold the DOF-preview button down while taking the lens off, the iris will hold the same aperture setting.Remember, you don't need autofocus at this macro range, use distance focusing, move closer and further until subject is in focus.Threads are well made, like all Fotodiox accessories.One thing to keep in mind, I got some vignetting at first, but extension tubes helped move the Zoom Lens farther and projecting a larger image on my sensor.

Mounting a Canon 50mm 1.8 onto the end of a Canon 70-200mm F4 IS will give you an extreme macro with this adapter ring, however:1) It vignettes rather badly at 70mm and is still noticible at 200mm. You have to crop about 50% of the image, which is OK if you are interested in a microscopic view.2) It is very long and difficult to hand hold. A tripod is really helpful.3) Given the shallow DOF, you must use F16 or higher, which means you need a flash mounted on a bracket and tilted toward the focal point. Since it is a point-blank flash, you also need a mini light-box diffuser to eliminate harsh shadows.Given all of the above, you can take some extreme close-ups of bug eyes and ants heads, but it won't work for product photography or flowers.

First things first; If you do not know the utility of a reversing ring, read on:Essentially what this does is allow you to attach a fast prime lens to the front of another lens. This may seems strange at first, but with the right combination of lenses, it becomes a very powerful macro setup. In the case of the 52-67mm reversing ring, this is ideal to mate the Canon 50mm f/1.8 to the Canon 70-200 f/4, and also works well (provided you have the necessary 77-67mm stepping ring) Now, it may look silly to have a lens strapped to the front of another lens, but take a look through the viewfinder. Not much to see, right? Now, move the front of the frankenlens closer and closer to the end of a ball point pen. Now you see what makes this combination useful? That's right. A huge amount of magnification! In fact a 50mm lens has a diopter value of +20, and is generally a multi-element lens, meaning that it will give a sharper picture than those close-up lens sets you can buy at your local camera shop, plus has more magnifying power than you could possibly get with those sets. With a 200mm focal length, the result is 4:1 (Meaning the image projected onto the sensor is 4x the actual size!That said, this ring is just right. It's aluminum, the machining is good, and it works. Not much to be said about it, really. You can't go wrong with it.

CANON USERS BEWAREI bought this reverse ring hoping I could use it on an upcoming trip and unfortunately I'm going to have to return it. It fits my 50mm lens just fine, but it does not connect to the camera body. Unless I am somehow using this product wrong (and please tell me if there's something I don't know) I will be returning and I'm very disappointed. 0/5 stars

Didn't fit

The product was well made and does exactly what it is supposed to, but it can be difficult to use effectively. It does attach two lenses together, but figuring out focus can be very tricky and almost definitely requires a tripod. The focus distance with my 55-200 mm lens and a 35mm reversed was very small. I think the easiest way to focus would be to have your lens practically touching your subject and slowly move it away. In my case the focus distance was between and inch and 2 inches. I posted photos to the gallery on the side here. You get a lot of magnification and can bring out a lot of detail. It is just tricky.Best of luck to everyone!