Light weight L-series super-telephoto lens, for all types of action photography. High-performance L-series super-telephoto lens, with 4 stop Image Stabilizer with 3 modes ideal for all types of action photography. The EF 300mm f/2.8L IS II USM delivers outstanding image quality in a robust lightweight construction. See full specification . Ken Rockwell's review of the EF 300mm f/2.8L USM lens. MIR.com web page devoted to EF 200mm f/1.8L USM lens, with good illustration of similar controls (scroll down). Canon USA Support: Using EF 400mm f/2.8L USM Focus Preset Function. Scribd PDF of EF 500mm f/4.5L USM lens manual (preview only, account and download req'd). YouTube video showing A worthy successor to the popular Canon EF 300mm f/2.8 IS, the all-new Canon EF 300mm f/2.8L IS II USM super telephoto lens is lightweight, weighing approximately 8% less than its predecessor, yet offers faster operation, improved image stabilization and superior optics. EF 200mm f2.8L II USM wide open @F2.8 1/2000 Mechanical (.146) (6.8) TLDR: The R5 with EF 300mm f/2.8L IS USM can reach ~7fps, F-stop doesn't affect FPS, also the newer EF 200mm f2.8 ll USM can only reach ~7fps. The only two RF lenses I own can do 9fps with mechanical shutter, far short of Canon's 12fps marketing. edited formatting. With full-time manual focus, you can move the focus ring whilst it is in AF (autofocus) mode. This means that you can make manual adjustments once the AF has finished, without changing to manual mode. has a silent focus motor built into the lens. Canon EF 300mm F2.8L IS II USM. Canon EF 500mm F/4L IS II USM. The original Canon EF 300mm f/2.8L IS USM Lens was a very impressive lens itself - I often used it as my reference lens for DSLR reviewing. Because this lens was so good, I was not overly excited about the version II lens being announced. That said, I am very happy with the new lens - especially from optical and build quality perspectives. The graph shows that the Canon EF 300mm f/2.8L IS USM performs well across the aperture range, with the best results for sharpness achieved between f/4 and f/7.1. Canon EF 300mm f/2.8L IS II USM EF 14mm f/2.8 L II USM ; EF 24mm f/2.8 IS USM EF 300mm f/2.8L IS II USM ; tracking the company’s rapid sunsetting of its EF lens lineup. Canon has gone on the record in the past saying rfNdE.