Canon RF lens mount

The Canon RF lens mount is an interchangeable-lens mount developed by Canon for its full-frame mirrorless interchangeable-lens cameras, and featured first by the EOS R, followed by the EOS RP.[3][4][5] The RF mount was announced in September 2018.[6][7]

Not to be confused with Canon R lens mount or Contax RF-mount.
Canon RF mount
Canon EOS R5 with Canon RF mount visible
Typebayonet
Inner diameter54 mm[1]
Flange20 mm[2]

The RF mount allows for the use of Canon EF and EF-S mount lenses using one of three Canon-made lens adapters.

Details

Canon full-frame cameras have used the EF lens mount since 1987. In comparison with that mount, the RF mount's inner diameter is the same at 54 mm.[1] The RF mount's flange focal distance at 20 mm is much shorter than that of the Canon EF and EF-S mounts at 44 mm. The EF-M mount has a flange focal distance of 18 mm.

An EF-EOS R lens adapter enables Canon EF, EF-S, TS-E and MP-E lenses to be used on cameras that have the RF mount.[8] The three adapters have differing features:[9]

  • Mount Adapter EF-EOS R
  • Control Ring Mount Adapter EF-EOS R – the Mount Adapter EF-EOS R with a lens control ring
  • Drop-In Filter Mount Adapter EF-EOS R – the Mount Adapter EF-EOS R with the ability to use drop-in filters, either a variable neutral density (V-ND) filter or circular polarising (C-PL) filter, and a clear (CL) filter, to be released in 2019

The EOS R is a 30 megapixel (6720 × 4480) full-frame camera. If an EF-EOS R Mount Adapter is used with it to mount an EF-S lens, the camera will function as an 11.6 megapixel (4176 × 2784) crop camera.

Lenses

At the time Canon announced its first R-series body, it announced four new RF-mount lenses:[10]

  • Canon RF 24–105 mm f/4 L IS USM
  • Canon RF 28–70 mm f/2 L USM
  • Canon RF 50 mm f/1.2 L USM
  • Canon RF 35 mm f/1.8 IS STM Macro – 0.5x maximum magnification.[11]

In conjunction with the February 2019 announcement of the entry-level full-frame EOS RP, Canon announced that six additional lenses would be released by the end of that year, although it did not indicate release dates for any of them:[12]

  • Canon RF 85 mm f/1.2L USM
  • Canon RF 85 mm f/1.2L USM DS — Same as the above, except includes "defocus smoothing" technology intended to improve bokeh. According to Canon, the effect is similar to that of an apodization filter, but achieved through special lens coatings instead of a filter.[13]
  • Canon RF 24–70 mm f/2.8L IS USM
  • Canon RF 15–35 mm f/2.8L IS USM
  • Canon RF 70–200 mm f/2.8L IS USM
  • Canon RF 24–240 mm f/4–6.3 IS USM

In 2020, Canon has announced 5 new RF mount lenses:

  • Canon RF 24–105 mm f/4–7.1 IS STM
  • Canon RF 100–500 mm f/4.5–7.1L IS USM
  • Canon RF 600 mm f/11 IS STM — fixed-aperture lens
  • Canon RF 800 mm f/11 IS STM — fixed-aperture lens
  • Canon RF 85 mm f/2 Macro IS STM - 0.5x maximum magnification

RF-mount lenses are not compatible with EF, EF-S or EF-M mount camera bodies.

Compatibility

The cameras that can use the RF mount are:

Canon RF-mount lenses
Focal length Aperture range Introduced Macro USM STM IS L-Series DO Filter
size		 Lens
diameter		 Lens
length		 Weight Source
RF 15–35 mm f/2.8L IS USM f/2.8 2019 No Yes No Yes Yes No 82 mm 088.5 mm 126.8 mm 0840 g [14]
RF 24–70 mm f/2.8L IS USM f/2.8 2019 No Yes No Yes Yes No 82 mm 088.5 mm 125.7 mm 0900 g [14]
RF 24–105 mm f/4–7.1 IS STM f/4–7.1 2020 No No Yes Yes No No 67 mm 076.6 mm 088.8 mm 0395 g [15]
RF 24–105 mm f/4L IS USM f/4 2018 No Yes No Yes Yes No 77 mm 083.5 mm 107.3 mm 0700 g [16]
RF 24–240 mm f/4–6.3 IS USM f/4–6.3 2019 No Yes No Yes No No 72 mm 080.4 mm 122.5 mm 0750 g [17][18]
RF 28–70 mm f/2L USM f/2 2018 No Yes No No Yes No 95 mm 103.8 mm 139.8 mm 1,430 g [19]
RF 70–200 mm f/2.8L IS USM f/2.8 2019 No Yes No Yes Yes No 77 mm 089.9 mm 0146 mm 1,070 g [20]
RF 35 mm f/1.8 MACRO IS STM f/1.8 2018 Yes No Yes Yes No No 52 mm 074.4 mm 062.8 mm 0305 g [21]
RF 50 mm f/1.2L USM f/1.2 2018 No Yes No No Yes No 77 mm 089.8 mm 0108 mm 0950 g [22]
RF 85 mm f/1.2L USM f/1.2 2019 No Yes No No Yes No 82 mm 103.2 mm 117.3 mm 1,195 g [23]
RF 85 mm f/1.2L USM DS f/1.2 2019 No Yes No No Yes No 82 mm 103.2 mm 117.3 mm 1,195 g [20]
RF 100–500 mm f/4.5–7.1L IS USM f/4.5–7.1 2020 No Yes No Yes Yes No 77 mm 93.8 mm 207.6 mm 1,365 g [24]
RF 600 mm f/11 IS STM f/11 2020 No No Yes Yes No No 82 mm 93 mm 269.5 mm 930 g
RF 800 mm f/11 IS STM f/11 2020 No No Yes Yes No No 95 mm 101.6 mm 351.8 mm 1,260 g
RF 85 mm f/2 MACRO IS STM f/2 2020 Yes No Yes Yes No No 67 mm 78 mm 90.5 mm 500 g
  • RF24–105 mm f/4L IS USM
  • RF28–70 mm f/2L USM
  • RF35 mm f/1.8 MACRO IS STM
  • RF85 mm f/2.0 MACRO IS STM at Canon EOS R6
  • RF600 mm f/11 IS STM
  • RF800 mm f/11 IS STM at Canon EOS R5
  • RF85 mm f/1.2L USM on a Canon EOS R6
  • Canon RF 24-240 mm f/4-6.3 IS USM

3rd party RF-mount lenses
Focal length Aperture range Introduced Macro USM STM IS DO Filter
size		 Lens
diameter		 Lens
length		 Weight Manufacture Source
Samyang AF 14 mm f/2.8 RF f/2.8 2019 No ? ? No No rear Filter 86 mm 95.3 mm 484 g Samyang [25]
gollark: ```pythonimport numpy # I'm sorrydef entry(x, y): a = numpy.asarray(x) # I'm sorry b = numpy.asarray(y) # so, so sorry result = a @ b # I'm a disappointment return result.tolist() # I failed everyone# I was supposed to be better than this.# I'm sorry.# I'll make it up to you next time, alright?# I'm sorry.```HIGHLY numpyous, see?
gollark: Yes, #5 just uses numpy.
gollark: It can multiply matrices, for instance.
gollark: It's a python package with many maths things.
gollark: DESPITE just using numpy?

See also

References
  1. Sparrow, Mark. "Canon Launches New EOS R Mirrorless DSLR Camera Hot On The Heels Of Nikon's Z Series". Forbes. Retrieved 2018-09-05.
  2. "Canon launches new full frame camera and lens line-up as part of the revolutionary, new EOS R system - Canon Press Centre". www.canon.co.uk. Retrieved 2018-09-05.
  3. "Everything you need to know about Canon's EOS R mirrorless camera". Engadget. Retrieved 2018-09-05.
  4. "Canon EOS R full-frame mirrorless and more expected Sept. 5, reportedly". CNET. 31 August 2018. Retrieved 2018-09-05.
  5. "Canon unveils new full-frame mirrorless camera, the EOS R". TechRadar. Retrieved 2018-09-05.
  6. "Canon's full-frame mirrorless EOS R is now official". CNET. 5 September 2018. Retrieved 2018-09-05.
  7. "Four RF-mount lenses kick off Canon's new full-frame mirrorless system". Digital Photography Review. Retrieved 2018-09-05.
  8. "Canon Unveils the EOS R, Its First Full-Frame Mirrorless Camera". PetaPixel. 5 September 2018. Retrieved 2018-09-05.
  9. "Three EF-to-RF adapters available for EOS R". Digital Photography Review. Retrieved 2018-09-05.
  10. "Canon EOS R full-frame mirrorless camera announced". The Verge. Retrieved 2018-09-05.
  11. "Canon RF 35mm F1.8 MACRO IS STM Specifications". Canon Europe. Retrieved 2020-05-22.
  12. Keller, Jeff (2019-02-09). "Canon developing six new RF lenses, including ultra-compact 70-200 F2.8". Digital Photography Review. Retrieved 2019-02-17.
  13. Etchells, Dave (2019-02-13). "Juicy technical tidbits on the Canon EOS RP - IR Interview/Q&A". Imaging Resource. Retrieved 2019-02-17.
  14. "New Canon RF Mount Lenses Bring Optical Excellence to Pro and Advanced Amateur Photographers". usa.canon.com. Retrieved 2019-09-01.
  15. "Adding to your Lens Arsenal: Canon Introduces its New RF 24-105mm STM Standard Zoom Lens". 2020-02-12. Retrieved 2020-02-13.
  16. "Canon RF 24-105mm f/4L IS USM". Retrieved 2019-02-07.
  17. "Alerting All Wanderlust Photographers, Canon Announces Its First RF Telephoto Zoom Lens, The RF 24-240mm F4-6.3 IS USM". Retrieved 2019-07-09.
  18. Deutschland, Canon. "Technische Daten & Funktionem für das RF 24-240mm F4-6.3 IS USM Objektiv". www.canon.de (in German). Retrieved 2019-07-09.
  19. "Canon RF 28-70mm f/2L USM". Retrieved 2019-02-07.
  20. Deutschland, Canon. "Canon erweitert sein RF Objektivangebot um das RF 70-200mm F2.8L IS USM und das RF 85mm F1.2L USM DS - Canon Presse Center". Come and See (in German). Retrieved 2019-12-01.
  21. "Canon RF 35mm f/1.8 IS Macro STM". Retrieved 2019-02-07.
  22. "Canon RF 50mm f/1.2L USM". Retrieved 2019-02-07.
  23. "RF 85mm F1.2 L USM". Retrieved 2019-05-09.
  24. https://www.dpreview.com/news/3023875800/canon-s-100-500-f4-5-7-1l-is-usm-is-first-super-zoom-for-rf-mount
  25. "The World's First AF 14mm for RF Mount".
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