Canon RF 600mm f/4L IS USM
Canon EOS R Mount

Canon RF 600mm f/4L IS USM

By Camera Reviews Editorial Team ยท Last updated February 18, 2026

600 mm f/4 · Image Stabilized

Focal Length
600 mm
Max Aperture
f/4
Weight
3402g

Full Specifications

Focal Length 600 mm
Maximum Aperture f/4
Lens Mount EOS R
Optical Stabilization Yes
Minimum Focus Distance 4.2m
Weight 3402g
Dimensions 168 x 472 mm

What Users Think

Pros

  • Exceptional image quality with sharpness and fine detail, especially in low light due to the f/4 aperture.
  • Fast and reliable autofocus performance, enhancing shooting of fast-moving subjects like wildlife.
  • High-quality build with weather sealing, making it suitable for outdoor conditions.
  • Good compatibility with extenders, maintaining sharpness and usability with a 1.4x teleconverter.
  • Lighter weight (3090g) compared to older EF models, making it more manageable for handheld shooting.

Cons

  • Cost is significantly higher than comparable lenses, often viewed as too expensive for amateur photographers.
  • Still quite heavy, making prolonged handheld use challenging without support.
  • Limited aperture of f/4 makes it less ideal in very low light conditions compared to faster lenses.
  • Some users find it cumbersome to carry around, especially during long shoots.

Community Verdict

The Canon RF 600mm f/4L IS USM is highly regarded for its exceptional image quality and autofocus performance, making it an ideal choice for wildlife photography. However, its high price point and substantial weight are concerning for many, especially non-professionals.

"{'text': "From what I've read and heard from professionals I've met, the 600mm f4 is worth the money because it's sharp, fast, has much faster autofocus, better IS, and is much more reliable.", 'context': 'User discussing the lens in a comparison thread about EF and RF lenses.'}"

- Reddit user

"{'text': 'The RF 600 f4 is, IMHO, one of the best options out there for wildlife. It is big and can be cumbersome, but it does enable fantastic shots.', 'context': 'A user who owns and uses the lens regularly for wildlife photography.'}"

- Reddit user

"{'text': 'Offsetting your focus from the lens. Pretty nuts considering the optical quality has gone up too.', 'context': 'Conversation about the comparison between RF and EF lenses regarding optical quality.'}"

- Reddit user

Want the Full Story?

Read our comprehensive review covering optical quality, sharpness, bokeh, autofocus performance, build quality, and more.

Read Full Review

Pairs Well With

Camera bodies compatible with the EOS R mount

Similar Lenses

Other lenses in the same focal range

All Canon Products
Browse All Reviews