Along with the RF16mm F2.8 STM lens, Canon introduced the RF100-400mm F5.6-8 IS USM lens. It is a compact and lightweight full frame telephoto lens. Covering an impressive focal length range, it weighs 635g and is approximately 165mm long. Of course, physics cannot be fooled, and the payback for the compactness and affordable price is a barely acceptable maximum aperture. This lens is equipped with an optical stabilizer, the effectiveness of which is estimated by the manufacturer at 5.5 EV. What’s more, when mounted on R-series cameras with built-in sensor-shift stabilization, an additional 0.5 EV can be won.
The lens is compatible with RF 1.4x and 2x teleconverters. In the first case, the focal length range becomes 140-560 mm, and the maximum aperture decreases to f / 8-f / 11. The second teleconverter allows a focal length range of 200-800 mm, and the maximum aperture is reduced to f / 11-f / 16.
Technical data of the lens RF100-400mm F5.6-8 IS USM:
- focal length – 100-400 mm;
- maximum aperture – f / 5.6-f / 8;
- minimum aperture – f / 32-f / 45;
- optical design – 12 elements in 9 groups, including an aspherical element and a UD element;
- the minimum focusing distance is 0.88 m;
- maximum magnification – 0.41x;
- the number of aperture blades – 9;
- automatic focusing drive – ultrasonic;
- filter installation diameter – 67 mm;
- diameter – 79.5 mm;
- length – 164.7 mm;
- weight – 635 g.
The Canon RF100-400mm F5.6-8 IS USM lens is expected to ship in October for $ 649.