Canon EOS R6 III and EOS C50 lens review

What are lenses should I use with Canon’s EOS R6 Mark III and EOS C50?

Selecting a set of three lenses that properly complement Canon’s EOS R6 Mark III and EOS C50 is not a straightforward task. While the RF mount has been around for more than seven years, it remains one of the most closed full-frame systems, with no native third-party autofocus lenses available. That limits choice but also means Canon’s own RF lenses have to be designed without compromise. They push size, speed and optical ambition further than many rivals.

For users coming from EF mount, Canon’s EF-to-RF adapters preserve full autofocus, stabilisation and lens corrections, and advanced versions add features like control rings, locking mounts and drop-in variable ND and polariser filters. With neither the R6 III nor the C50 featuring inbuilt ND filters, drop-in adapters can be a particularly smart investment. PL adapters open the door to decades of cine glass for C50 users as well. But for those fully committing to RF, Canon’s lenses are still the only native option – and they don’t disappoint.

Speedy standard: Canon RF 28-70mm f/2 L USM

One of the most distinctive RF lenses is the Canon RF 28-70mm f/2 L USM, an ambitious standard zoom that takes full advantage of the wide RF mount. Covering a classic focal range from wide angle to short telephoto, it pairs versatility with a constant f/2 aperture.

So this lens can replace multiple primes, behaving like a 28, 35, 45, 50 or 70mm. For both stills and video, that flexibility is incredibly liberating, especially in low light or when shallow depth-of-field is desired.

There are trade-offs. At 1430g and with a large 95mm filter thread, it is physically imposing and, at £3299, it is expensive. But optically, it delivers. Sharpness is fantastic across the frame even wide open, chromatic aberration and distortion are well controlled and Canon’s colour rendering is clean and natural straight out of camera. AF is fast, quiet and dependable, so the lens is equally suitable for events, portraits or run-and-gun hybrid work.

It is not a casual lens, but for shooters willing to shoulder the weight, it is one of the most capable standard zooms Canon has ever produced.

Go-to pro telezoom: Canon RF 70-200mm f/2.8 L IS USM

Few lenses are as universally useful as a 70–200mm f/2.8, and the Canon RF L IS USM version is a cornerstone of any pro kit. For portraits, events, sports, wildlife and cinematic detail shots, the £2999 lens is a genuine all-rounder.

The constant f/2.8 aperture gives strong subject separation and reliable low-light performance, while optical quality is great across the zoom range. Sharpness, contrast and colour are consistently high, even wide open, and the lens maintains Canon’s reputation for flattering, natural rendering.

Its autofocus performance stands out. The USM (Ultrasonic Motor) drive locks on quickly, tracks reliably and pairs well with the AF systems in the R6 III and C50. The Image Stabiliser further improves handheld usability, particularly at longer focal lengths.

Its build is solid and reassuringly professional, with weather sealing and predictable balance thanks to its inner-focusing design. Filmmakers should mind its weight over long shoots, but as a single long lens that rarely lets you down, it’s still hard to beat.

Wide-open possibilities: Canon RF 24mm f/1.4 L VCM

Rounding out the trio is the Canon RF 24mm f/1.4 L VCM, part of Canon’s new generation of hybrid prime lenses. Smaller and lighter than the big zooms or fast primes from the first wave of RF optics, it offers a much faster aperture, ideal for low-light work, environmental portraits and creative video.

It delivers what you’d expect from an L prime: f/1.4 centre sharpness is impressive, edge performance is strong for such a fast wide lens and contrast and colour remain controlled without looking harsh. Smooth highlight roll-off suits stills and Log video workflows.

Where the lens stands out is AF. The new Voice Coil Motor system is fast, near-silent and very smooth, with minimal focus breathing – qualities that make it more video-friendly than traditional stills primes. Handling is excellent, with a dedicated iris ring reinforcing its hybrid intent. At £1679, it is not cheap, but it feels like a future-proof investment – a prime that helps you shoot wide open with confidence.

Conclusion

The three lenses form a well-judged kit, playing to the strengths of the R6 III and C50. From fast wide-angle work to telephoto reach, they cover most pro needs while delivering the optical quality Canon’s latest cameras deserve. It’s not a cheap set-up, but it is one that makes sense – and helps Canon’s each-way gamble pay off.

canon.co.uk