Sony FE 100-400mm F4.5 GM OSS Review

Lens design often becomes othodoxy. 70-200mm telephoto zooms “always” have fixed aperture of F2.8 or F4, but 70-300mm or 100-400mm zooms are “always” variable aperture. 70-200mm zooms are internally zooming, but 70-300mm or 100-400mm zooms are always externally zooming. There…














