EF300mm F4L IS USM Instruction Manual
Page 2
... a second image stabilizer mode that is equipped with Extender EF1.4X ll and EF2X ll. * Based on using the lens and taking pictures. Supplementary notes on [1/focal length] second. The Canon EF300mm f/4L IS USM lens is a high-performance telephoto zoom lens for EOS cameras, and it requires a shutter speed [1/focal length] second or faster to prevent...
... a second image stabilizer mode that is equipped with Extender EF1.4X ll and EF2X ll. * Based on using the lens and taking pictures. Supplementary notes on [1/focal length] second. The Canon EF300mm f/4L IS USM lens is a high-performance telephoto zoom lens for EOS cameras, and it requires a shutter speed [1/focal length] second or faster to prevent...