09-13-2016, 06:23 AM
Quote:Well 70-300 IS was worlds apart from its predecessor and from 75-300, do you think they modified the optical formula ?If the lens indeed is a 70-300mm f4-5.6 L IS USM III, it will not have an STM motor. My guess is that it will have revised optics, the old lens is not perfect, room for improvement. Filter thread size went from 58mm to 67 mm, by the way.
my guess, it's the same with added STM and the LCD display