Canon RF 100-500mm Extender Mounting Restriction
Canon RF 100-500mm: Why the 1.4 Extender should be at 300mm for mounting Why Canon RF Extenders require the RF 100-500mm to be at 300mm or below when mounting, and how the lens works to 500mm afterward. Vernon Chalmers Photography perspective: This article approaches the RF 100-500mm and Canon RF Extenders from a system-architecture perspective, focusing on how Canon's optical and mechanical design determines what the photographer can physically do with the lens. The distinction is particularly relevant to advanced Birds in Flight photography, where equipment configuration can directly affect operational speed and reach. Why You Can't Mount an Extender at 500mm The Canon RF 100-500mm F4.5-7.1 L IS USM is one of Canon's most versatile super-telephoto zoom lenses for the EOS R system. Its 100–500mm focal-length range makes it particularly useful for wildlife, birds in flight, aviation, sports and general telephoto photography. Canon also designed the lens to work with its ded...