Canon presented the EF 70-200mm f/2.8L IS III USM lens, dedicated for professionals. Unfortunately, no breakthrough has taken place and the changes in comparison to the predecessor are rather minor.
The optical system consists of 23 elements placed in 19 groups (5 low-dispersion lenses and one fluorite lens), the 8-blade aperture can be closed up to the value of f/32 and the stabilization system has the efficiency of 3.5 EV. The lens is equipped with an ultrasonic ring autofocus drive – the minimum focus distance is 1.2m. One of very few novelties of a new lens are anti-reflective ASC coatings. The front and rear lens have been covered with fluorite coatings, which help in keeping the lenses clean.
1). Canon EF 70-200 mm f/2.8L IS III USM
The body of the lens presented today is made of magnesium and fully sealed, thanks to which it is resistant to dust and splashes. In the set, we will find a tripod mount and a sun shield. The lens weighs 1440 and its dimensions are 89 x 199mm.
The lens will appear on sale in August 2018 and it will costs $2100.