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Support Seamless Focus Gear Ring FAQ

What size rings are compatible with Canon lenses? Last modified 04/29/20

Canon LensesZoom RingFocus Ring
EF 16-35mm f/2.8L III USM78-80mm81-83mm
EF 16-35mm f/2.8L II USM78-80mm81-83mm
EF 70-200mm f/2.8L IS II USM78-80mm81-83mm
EF 24-105mm F/4L IS USM75-77mm75-77mm
RF 24-105mm F/4.1-7.1 IS STM78-80mm75-77mm
EF 24-105mm F/4 IS II USM75-77mm75-77mm
EF 17-40mm F/4L USM66-68mm69-71mm
EF 70-200mm62.5-64.5mm69-71mm
EF 85mm F/1.8 USM*69-71mm
EF-S 18-135mm F/3.5-5.6 IS STM72-74mm75-77mm
EF-S 18-200mm F/3.5-5.6 IS78-80mm75-77mm
EF-S 18-55mm F/4-5.6 IS STM59-61mm59-61mm
EF-M 18-150mm F/3.5-6.3 IS STM53-55mm53-55mm
EF-S 18-135mm F/3.5-6.3 IS69-71mm72-74mm
EF 100mm F/2.8L IS USM*72-74mm
EF 50mm F/1.4 USM*66-68mm
EF-S 35mm F/2.8 IS STM*62.5-64.5mm
EF 70-300mm f/4-5.6 IS II USM75-77mm75-77mm
EF-S 15-85mm f/3.5-5.6 IS USM72-74mm75-77mm
EF-S 10-18mm f/4.5-5.6 IS STM62.5-64.5mm69-71mm
EF 70-300mm f/4-5.6L IS USM85-87mm81-83mm
EF 100mm f2 USM*75-77mm
TS-E 24mm f3.5L Tilt Shift*78-80mm
100mm f2.8L IS USM*81-83mm
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