The Sensei 49-77mm Aluminum Step-Up Ring permits the use of 77mm threaded filters on lenses with 49mm filter threads. It features a lightweight, aluminum alloy construction that has a corrosion-resistant, black anodized finish for durability.

Use 77mm Filters on 46mm Lens    Use 77mm Filters on 49mm Lens    Use 77mm Filters on 52mm Lens    Use 77mm Filters on 55mm Lens    Use 77mm Filters on 58mm Lens    Use 77mm Filters on 62mm Lens    Use 77mm Filters on 67mm Lens    Use 77mm Filters on 72mm Lens    Corrosion-Resistant Anodized Aluminum

Related Questions and Answers

Q: 1. Can they be used on glasses?

A: Yes, you can use the Sensei BOC-CK Basic Optics Care and Cleaning Kit to clean your glasses.

Q: 2. What is the minimum usable focal length for film camera?

A: On a 35mm film camera lens, you can use any focal length longer than 17mm.

Q: 3. Is there an easy way or a certain way to fold this up? I love the backdrop but can't get it back in the bag.

A: Please refer to the following instructional video for reference. https://bit.ly/2PPIb4v

Q: 4. will this fit a fujinon 23mm f1.4 ? thread is 62mm

A: I do not know. I have Canon gear and used this for shooting the eclipse. I would recommend talking with B@H technical staff.

Q: 5. Is this good for cleaning teleprompter/beamsplitter glass?

A: Yes this cleaning kit is good for cleaning teleprompter/beamsplitter glass as well other optical glass products

Q: 6. Has the basic filter holder been redesigned recently? I have an old version that is all plastic with threaded inserts for the screws. I recently saw a Lee lens hood that had a center ring that was metal that was fused to the plastic. Is the current 2014 holder plastic -metal hybrid or all plastic?

A: This filter holder is made of a heavy duty, high impact plastic with metal screw threads built in.

Q: 7. Hi. My original plan was to use the Lee Big Stopper; with a Cokin z-Pro holder on my Bower 14mm D700 combination. I read on the Big stopper Q&A that the Cokin cannot take 4mm filter. So now I'm opting for this Lee Foundation Kit.The next challenge is a adaptor ring. This is difficult as the Bower has no thread. I have machined my own aluminium adaptor Ring with an outside diameter of 101mm; which slides into the filter holder; securing it. The other end is a slide-fit over the lens body with securing bolts.So; are there any comments on this combination of gear? the 4x4inch filters would work fine on a lens this wide?I just want to make 100% sure before I order.I'm interested in Long Exposure Landscape shots

A: The Lee Big stopper is not 4mm. It is 2mm thick.

Q: 8. Is this ok to use on A) Scanner glass (Epson FastFoto and a Kyocera Copier? How about / as of this fall use on the newest 2021 M1 MacBookPros (not sure if they have the nano texture screens or not - but they definitely show *every* tiny smudge. Thanks and sorry if this should be obvious?

A: For the scanner glass you can use BH #EPCLNKIT and for your Apple devices you can use BH #APMM6F3AM along any alcohol-free solution: https://www.bhphotovideo.com/c/product/1301974-REG/epson_b12b819291_epson_cleaning_kit_ds_530_es_400_500w.html https://www.bhphotovideo.com/c/product/1668385-REG/apple_mm6f3am_a_polishing_cloth.html

Q: 9. Can you or how can you use a polarizing filter with this holder and does it have to be a lee filter?

A: You can use a square polarizer like this one:LEE Filters 4x4 Circular Polarizer Glass FilterB&H # LECP44 Mfr # PLC-GIt can rotate by spinning the entire holder. Most other 4x4 circular polarizers will work ,also.

Q: 10. There is a USB port on the light - can that be used to power the light when plugged into a computer? Also wondering about the 2 flexible arms. What kind of screw mount are they (male, what size)?

A: The USB is for keeping a phone powered while recording. The arms are 1/4"20 threads.