[Glass] This step up ring is built to tight tolerances, made of solid brass, so it doesn't bind when the temperature changes like cheaper aluminum. Good buy, slightly pricey, but I expect to have it for a long time.

[60 mm] Easy way to use the filters you already have on lenses that you seldom use.

[3.5 x 3 x 1"] Like all Heliopan, this filter is super high quality German design and make.
Magnification allows me to shoot flowers in macro, while beautifully distorting everything around.

[60 mm] B&H Photo is one of the few places that you can readily get these specialty products. I am using the 82mm B+W (1A) pro filter on a Canon 24mm TSE II lens. Attached to the filter is the Heliopan 82-95 step-up ring (#112). There is NO vignetting at any aperture with this combo. The front lens cap, i.e., the Hasselblad 95mm, works perfectly. All of these items are of the highest quality and compliment the new TSE Canon lens, which is the sharpest Canon lens that I own.

[0.13 lb] When I bought a 20mm fixed focus aspherical lens to complement the 14-140 mm zoom lens, I needed a step up ring to utilize the ND filters and diopters. The Heliopan ring is sturdy, easily mounted (don't screw it in too hard!) and allows you to use all your filters on a lens with msaller diameter. An additional advantage is: stacking of several filters does not vignette the resulting image, since the filter ring is out of sight.

[Single Coated] I purchased this filter with the +2 lens. Both have excellent optical quality and can be used in conjunction to get a +5 result. Light to carry, a bit slower to install than a macro lens but with all the benefits and none of the drawbacks ie, higher cost, bulk and weight. Embarrassingly, when I first attached them I could not get things to focus as I was keeping the distance required by my macro setting. But as soon as I closed in, Voila, it is like photographing through a microscope. Bug pictures here I come.

[3.5 x 3 x 1"] Bit weighty

[+1] I use this with my Polaroid 180, using a finder from the close up set made for the Polaroid 250 (much cheaper than the set made for the 180). I use a 45-46mm filter adapter in order to mount this to the lens. This should also work for the Polaroid 190, 195. In the case of my 180, the the addition of the adapter ring means that this lens is not at the same distance as what the RF finder was calibrated for. I found that with the camera RF set at the 8 feet mark, the focus in the RF is correct with the image focus. That makes it very simple to make closeups. It has the usual high quality of construction from Heliopan. The brass ring means that it can be removed easily from my aluminum filter ring adapter without binding. It's a great item for taking pictures of flowers in the garden.

[Close-Up] Quality and function wise I give it a 5/5. It went on my Canon 50mm f/1.8 II easily and my 72mm filter when on flawlessly as well. However, before you buy this, I advise looking at the price of the filter first, which I foolishly did not do. I realized that the filter was just as expensive as this step-up ring. Also, if you have a small focus ring near the end of the lens near where the filter goes, I would also be cautious about this. The Canon 50mm f/1.8 II I use this on has a thing focus ring, so it is difficult for me to focus when I want to do so manually, as the larger ring gets in the way. Otherwise, this works very well.