300mm F6.3 Catadioptric Compact Telephoto for Mirrorless Cameras Mount:Sony E (Black) Its fast maximum aperture also

Its fast maximum aperture also helps you control camera movement by allowing a higher shutter speed or reducing noise by choosing a low ISO

a metal aperture control with a slip resistant matte finish

And the 85mm focal length is often chosen for portraits and close-ups

It features a very fast maximum aperture of T1

three custom mode switches on the lens can be pre-programmed via the optional Lens Station

300mm F6.3 Catadioptric Compact Telephoto for Mirrorless Cameras Mount:Sony E (Black) Its fast maximum aperture alsoThe Samyang 300mm F6. 3 UMC CS Lens is a mirror lens designed specifically for use on mirrorless cameras. The lens' Cassegrainian design enables it to achieve a 450mm 35mm equivalent focal length perspective within a compact and lightweight lens design that is significantly smaller than a traditional 300mm lens. It features a fixed f 6. 3 aperture and utilizes manual focus operation for focusing as closely as 2. 95'. One extra low dispersion element