The Canon RF 15-35mm F2.8L IS USM lens follows on from the Canon EF 16-35mm f/2.8L III USM, although the extra millimetre at the wide end gives a notable gain in the angle of view. And it's not just filmmakers using full-frame EOS R System cameras that benefit.
"For the Super 35mm Canon EOS C70 user, this lens gives the equivalent angle of view of a standard zoom," explains Mike. "The camera's electronic stabilisation works co-operatively with the lens's Image Stabilizer as well, giving you an enhanced level of stability."
When you need to go wider on the EOS C70, reach for the Canon RF 10-20mm F4L IS STM. This groundbreaking professional ultra-wide zoom is the widest full-frame lens with a fixed aperture. It's also the first zoom of its kind to offer either autofocus or image stabilisation. The RF 10-20mm F4L IS STM opens up new opportunities for shooting video in confined spaces or adding impact to exterior shots, particularly when paired with a full-frame camera such as the EOS R5 C.
"To achieve this extreme focal length in the past, you would have had to use a retrofocus system and place all the optics further from the sensor," says Mike. "But the RF mount allows us to position the optics closer to the sensor, so we don't have to bend the light as much. The basic formula is much simpler in design, and most of the complex optics we've added are there to deal with the aberrations that often happen with such wide-angle lenses.
"There's only a single element focusing group, which means that we've also been able to use an STM [Stepping Motor] for the first time in an L-series lens. STM technology is very good for video because it's so smooth and quiet. The STM unit in the RF 10-20mm F4L IS STM is more advanced than those in our entry-level lenses, so, rather than having to recalibrate, the lens stays at the same focusing distance when you turn the camera off and back on again. It also supports Full-time Manual focusing override.
"Another benefit for filmmakers is the new type of Image Stabilizer that we have developed for this lens," Mike adds. "Peripheral Coordinated Control IS is designed to reduce the wobble that can sometimes be seen in the corners of a wide-angle video shot on a camera with IBIS. That wobble is caused by perspective shift – the same effect that you get if you look up and down at a tall building. We've been able to combine the IS systems in the camera and the lens to fix that."