The Heliopan 52-49mm Step-Down Ring - #460from Heliopan 52-49mm Step-Down Ring - #460permits the use of 49mm filters on a 52mm threaded lens. It features a durable brass construction to prevent jamming and binding, and it has a matte black finish to reduce reflections.

Use 49mm Filters on 52mm 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. 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: 3. When using this adapter, with a 77mm nd filter on a 58mm cap size lens, will it have any downsides? Or is it gonna look perfect just like a 58mm filter?

A: When using the B+W 58-77mm Step-Up Ring, photos should look fine using the 58mm cap size, unless one is using a fisheye wide angle lens.

Q: 4. 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: 5. could i use this in nikon lens to step down to use with 37mm Firecrest Neutral Density 5.4 Solar Eclipse Filter (18-Stops)?

A: You should be able to, but I am bot sure!

Q: 6. what is the thread pitch?

A: Heliopan does not list the pitch on the Heliopan 42-39mm Step-Down Ring (#316). But standard for that size is 0.75mm thread pitch.

Q: 7. My email was wrong. Is this a 52mm female thread? to a 48mm male thread?

A: The Sensei 52-48mm Step-Down Ring has female 48mm threads on the front of the ring to allow you to connect a filter with 48mm male threads to the step-down ring. The back of the step-down ring has 52mm male filter threads which will screw into the 52mm female filter threads on the front of your lens.

Q: 8. Will this 62-82mm adapter ring be compatible with the Kase K9 Filter Holder Kit (K100 System)?

A: Yes, the will thread to the Kase 82mm Magnetic Lens Adapter Ring included with the Kase K9 100mm Filter Holder Kit.

Q: 9. I am thinking about purchasing an 82 mm neutral density filter. Is a step-down ring what I need to allow me to use this filter on my 77 mm lenses? Looking at the 82-77 step-down ring (#408) by Heliopan. Thanks!

A: What you would need is a step up ring instead, since you are trying to fit an 82mm filter on a lens with a 77mm diameter. Please see the following link: http://bhpho.to/1n8QhUq

Q: 10. Can multiple step down rings be used at same time to achieve desired use. For example, assuming one ring in size needed does not exist, can I use a 77mm to 72mm + a 72mm to 68mm at same time?Tks.

A: You could use multiple step-down rings together if the combination you need isnt available. I would suggest using more than two together. Also keep in mind that using a filter that is smaller than the filter thread of a lens can cause vignetting. So you wouldnt want to use a filter that is too much smaller than your lens.