Adapter ring / step up ring is used to be able to have an accessory such as a UV filter, polarizing filter / CPL filter, macro filter / close-up filter / close-up filter, gray filter / ND filter, FLD filter or other accessory with a larger diameter to a lens with a smaller diameter. This means you do not need to buy a new lens / accessory to vary between different lenses. So with the adapter ring you can have a filter such as a UV filter, polarizing filter / CPL filter, macro filter / close-up filter / close-up filter, gray filter / ND filter and FLD filter for different lenses. Note! However, we always recommend that even the lens that does not have a filter because it has been moved to another lens has a simpler filter on it to avoid scratches, grease stains or marks. Size: 77-82mm (lens 77mm and filter 82mm) Filter material: Metal (good quality) Brand: RISE (UK) Fits lenses that fit cameras from Canon, Nikon, Micro 4/3, Pentax, compatible with Samsung, compatible with Sony and Leica and more. Below are lenses that fit canon cameras where the adapter ring fits. In case of other factory on the camera check at the front of the lens which mm filter thread you need for your filter. Check at the front of the lens which mm filter thread / thread size you need for your adapter ring and then check which filters you have to find the right size for exactly which adapter ring you need. Canon EF-S 10-22/3.5-4.5 USM Canon EF 16-35/4 L IS USM Canon EF 17-40/4L USM Canon EF-S 17-55/2.8 IS USM Canon EF 24-70/2.8 L USM Canon EF 24-70/4L IS USM Canon EF 24-105/3.5-5.6 IS STM Canon EF 24-105/4L IS USM II Canon EF 28-300/3.5-5.6 L IS USM Canon TS-E 50/2.8L Macro Canon EF 70-200/2.8 L USM Canon EF 70-200/2.8L IS II USM Canon EF 85/1.4L IS USM Canon TS-E 90/2.8L Macro Canon EF 100-400/4.5-5.6L IS II USM Canon EF 300/4.0L IS USM Canon EF 400/5.6L USM Laowa 15/4 macro shift for Canon EOS (full frame) Samyang 50/1.4 AS UMC for Canon EOS Samyang 50/1.4 AS UMC for Canon EOS M (EF-M mount) Samyang 50mm T1.5 AS UMC VDSLR for Canon EOS Samyang 50mm T1.5 AS UMC VDSLR for Canon EOS M (EF-M mount) Samyang MF 135/2.0 ED UMC for Canon EOS EF Sigma EX 17-50/2.8 DC OS HSM for Canon Sigma 24/1.4 DG HSM (Art) for Canon AF Sigma EX 28/1.8 DG for Canon AF Sigma 50/1.4 DG HSM ART for Canon AF Sigma EX 70-200/2.8 APO DG HSM OS for Canon AF Sigma 120-400/4.5-5.6 DG APO HSM OS for Canon Tamron AF SP 10-24/3.5-4.5 Di II LD IF to Canon AF Tamron AF SP 70-200/2.8 Di VC USD G2 to Canon Tokina AT-X 11-16/2.8 Pro DX II to Canon Tokina AT-X 11-16/2.8 Pro DX V to Canon Tokina AT-X 12-28/4 PRO DX to Canon Zeiss Distagon Otus 55/1.4 APO, for Canon EF/EOS (ZE) Zeiss Milvus 85/1.4 for Canon EF/EOS (ZE) Zeiss Milvus 135/2.0 for Canon EF/EOS (ZE) Zeiss Apo Sonnar T* 135/2.0 ZE to Canon Your lens may have the following designations, among others: AF AF-S AL ART APO APS-C DA DC DG Di DT DX E EG ED F FI FX G HD HSM I II III IIII LD Macro MF NIKKOR OS PRO SMC-DA SP UMC VC VR XR