[37 mm to 49 mm] I tried three different step-up rings for my lx100 and the Heliopan was the only of three that didn't cause a lens error when the lens was retracted. If you're in the same boat, this is the one to go for!

[37 mm to 49 mm] I not only got this size, but also some other Heliopan brass step up rings for my Leica M lenses, and all went on silky smooth...no binding like aluminum ones...very satisfied and would recommend

[Brass] Well made and sturdy. I got it as a make-shift hood for the tiny Panasonic 12-32mm which does not come with a hood for its minuscule 37mm filter thread. Although a 37-52mm step-up ring might make more sense depending on what filters or polarizers you want to attach.

[0.05 lb] Cheap, but does what it's meant to do.

[Brass] I needed this for a crazy task: converting my ancient (1952?) Leitz Elmar 9cm (90mm) lens to accept a 49mm lens hood or lens cap to be used on a Canon EOS M6 Mark II. It's a great old lens, great new camera (and because the sensor is APS-C, it's only using the center of this excellent lens). I already had an old Tiffen adapter ring to mount a Series VI UV filter, and it screwed into the 39mm front threads of the lens. I did not have a 44mm lens cap or hood to screw into that Series VI adapter, but did have some spares of each in 49mm.


Bizarre and probably a little confusing, I know.


This step-up ring bridged the gap, and everything fits great with no vignetting caused by the Tiffen metal lens hood, which screws into the step-up ring just like the metal lens cap pictured. (Nice to have a good lens hood when shooting in full sun with an old single-coated lens).

[37 mm to 49 mm] It allows you to use the filters for the other e mount lens (49mm) on the full frame (67mm) lens. Their cropped but it works. Especially if it's a specialized filter that you spent a lot of money on.

[3 x 2.3 x 0.6"] I have older version of Leica R 35/2 lens. It takes 48mm filters or I can use step-up rings for 52mm or any larger size filters. Well, the problem is that 48mm filters can be hardly found. If I did find them, they are very expensive. So I purchased 48-52mm step up ring by Heliopan that is what I review now. Heliopan step up rings are fantastic, because they are brass rings, not aluminum ones. They will not bind nor cross thread either. I have all sort of step up rings by B+W, but they are anodized aluminum. I don't trust their rigidity. Also they sometimes are stuck with filter rims, so binding is a real problem with any brand name step-up, -down rings as long as they are made from aluminum. Heliopan 48-52 mm ring is a bit heavy, but I like its solid feel and it gives me a worry free confidence from binding or cross thread. It will last than any filters or myself for that matter!

[37 mm to 49 mm] Great fit, no snagging, great heliopan quality brass ring. Should last a long time.

[0.05 lb] What can you say. It Works !!! Made of brass and well made.

[Brass] I recently purchased a Zeiss 1:1.4/50 for my EOS 7D and thought that my Raynox DCR-1850Pro Teleconverter Lens 1.85x which I used with my Dimage camera, might be adapted to this lens. I installed this step-down ring between the two and now enjoy a 100mm+/- lens along with my great Zeiss 50mm. I store the two attached and separate as needed. The high quality of this ring makes this possible; shows little wear after much use. I am thouroughly satisfied with this ring and highly reccomend it. ( Watch for the green light,Luke, a manual focus lens, it is!)