The Heliopan 43-39mm Step-Down Ring #499from Heliopan 43-39mm Step-Down Ring #499permits the use of 39mm filters on a 43mm threaded lens. It features a durable brass construction to prevent jamming and binding, and it has a matte black finish to reduce reflections.

Use 39mm Filters on 43mm Lens    Brass Construction    Matte Black Finish

Related Questions and Answers

Q: 1. Does this come with the 72mm lens Attachment to 82mm filter threads?

A: No, please check out the Sensei 72-82mm Step-Up Ring. https://www.bhphotovideo.com/c/product/809647-REG/Sensei_sur7282_72_82mm_Step_Up_Ring.html

Q: 2. What is the overall diameter of this step-down adapter ring?

A: There are no published measurements of the diameter of the Heliopan Bay 1-30.5 Step-Down Ring (#305).

Q: 3. Might be a dumb question but can this be used with a 77mm filter on a 62mm lense? from the description it seems like its meant more for the other way around

A: This ring is to attach a 62mm filter to a 77mm lens thread but for wide lenses, that's a no-no, vignetting will occur.

Q: 4. Are there any side effects (vignetting, i think is the term used) when using the smaller 77mm filters on the larger 82mm lens?

A: Hi again Steve, just received your reply. I did not consider going to a full frame camera. Throwing that into the mix especially with a 24-70 lens I think pretty much would cause vignetting. Going from an 82mm down to a 77mm equals about one-quarter inch that would equal a one-eighth inch reduction on each side of the filter's rim. I would expect you'll get a lot of vignetting. One consideration is that the Sensei 82-77 step-down ring is not really expensive and if it caused too much vignetting you're not out a lot of money for the ring itself. I buy that brand, as they work very well and at a low cost. I would say to start saving for 82mm filters; I think you'll fine more vignetting than you'll want to deal with, especially going to a full frame camera and that lens.

Q: 5. Does this cause heavy vignetting with prime lenses for example 50mm?

A: No, you should not get vignetting with a 50mm lens.

Q: 6. I'll be using this on my 85mm Tessar ZM which has 43mm filter thread. All of my filters (CPL and ND) have 39mm filter thread. Will my 85mm Lens vignette by using this item?

A: Anytime you use a step-down ring to use a smaller filter on the front of a lens with a larger filter diameter, you run the risk of obtaining some vignetting. Unfortunately, we have no way to test or guarantee which lens/focal length combinations. While vignetting would normally be more noticeable with wide angle lenses compared to telephoto lenses, I cannot guarantee you will not get vignetting. The best I can state would be to purchase the item and see if it works for your needs, and if it does not, you would have 30 days to return the item for an exchange or refund via our 30-Day Return Policy on this item.

Q: 7. Any observed drawbacks when used on a Sony G-Master 85mm (77mm) with a 72mm Zeiss Polarizer ?

A: There will always be issues using a smaller size filter than the filter threads of the lens. Most notably you are likely to get vignetting.

Q: 8. Will these fit on a Canon lens?

A: This General Brand Step-Down Ring Kit would be compatible with Canon lenses, but it depends on the filter size of the lens.

Q: 9. can i use a step down on a 77 to 67 and then another on top of it from 67 to 49

A: Yes you use more than one step down adapter ring. Note you will get a lot of vignette when using that setup of 77 lens filter thread to a 49mm filter.

Q: 10. Does this help with vignetting when using a smaller filter?

A: No