Canon News then shared details of patent filings by the manufacturer detailing an additional Canon RF 400mm f/2.8L and Canon RF 600mm f/4L IS USM, noting that they were definitely not EF lenses. "EF mount super telephotos have the back focus distance between 60-75mm well exceeding the distance between the sensor and the lens mount of 44mm for Has focus motor. Canon EF 500mm F/4L IS II USM. Lenses with a built-in focus motor can autofocus even if the camera does not have its own focus motor. Has full-time manual focus. Canon EF 500mm F/4L IS II USM. With full-time manual focus, you can move the focus ring whilst it is in AF (autofocus) mode. has a silent focus motor built into the lens. Canon EF 500mm F/4L IS II USM. Sigma 500mm F4 DG OS HSM Sport. Lenses with built-in focus motor focus faster and more quietly than lenses without a focus motor which rely on the camera's body focus motor. minimum focus distance. This image of a landing Wood Stork was photographed at Eco Pond, Everglades National Park with the tripod-mounted Canon EF 600mm f/4L IS II USM lens, the Canon 2x EF Extender III (Teleconverter), and the Canon EOS-1D X Digital SLR camera. ISO 800: 1/2000 sec. at f/10 in Manual Mode; with the off-angled light this image was a bit under-exposed.. Worthy successor to the lauded Canon EF 500mm f/4L IS USM, the new EF 500mm f/4L IS II USM super telephoto lens features completely redesigned Fluorite optics that deliver sharper images with less chromatic aberration and has a lighter weight thanks to magnesium and titanium construction elements. Key Features. Precisely machined from a solid block of 6061-T6 aluminum, the Really Right Stuff LCF-53 Foot will replace the original foot of a Canon EF 200-400mm f/4L IS USM lens with internal 1.4x teleconverter or a version II 400mm, 500mm, or 600mm IS USM lens and provides an extremely durable and stable platform for your lens. The alternatives to this lens are the monster-sized Canon RF 28-70mm F2L USM, but that lacks stabilization and only goes to a 28mm wide-angle view rather than 24mm. Or there's the Canon RF 24-105mm F4L IS USM, but that's quite big too, and one f-stop slower. Read our full Canon RF 24-70MM f/2.8L IS USM review for more details Always a favorite of motor sports, wildlife and nature shooters, the relatively lightweight 500mm lens now adds Image Stabilization for an unbeatable package of handling and sharpness. Fluorite and UD-glass--a combination available from no other lens manufacturer--provide great performance, even with the EF 1.4x II or 2x II tele extender attached. Set the focus preset switch to ON or . Press the shutter button halfway or turn the focusing ring to focus the distance you want to preset. Press the focus preset button. The focused distance will be preset. If the focus preset switch was set to , the beeper will sound once. By turning the playback ring to the left or right, the focus shifts as EF 500mm f/4L IS II USM. Most people tend to think of image stabilization as being mainly for telephoto lenses. While it's true that their longer focal lengths tend to magnify the effects of v6pw8p.