EOS R50 - RF lens will require a mount adapter

[g_khajanchi]

Hi, RF lenses can be used directly with the EOS R50 or will require a mount adapter.

Shre RF-S Lens list

[Tronhard]

Any RF or RF-S lens will work on the R50: it is a situation similar to that with EF and EF-S lenses working with APS-C cameras in the DSLR days.

[g_khajanchi]

what the cons of use third party  company Lens like sigma, Tamron etc. and for this like Mount adaptor What are the cons of using third party company lenses like Sigma, Tamron etc. and is a mount adapter required to use them?

[Tronhard]

Canon do not support any 3rd party lenses on their bodies - they never have.  Such support is given by the lens makers.

The vast majority of lenses from 3rd party lens makes are EF or EF-S lenses and must be used via a Canon EF-RF adapter.  The risk that they will not be fully-compatible is there.   Canon have announced licensing for both Sigma and Tamron to make RF-S lenses for their cameras and these will be designed by those makers to work with the R -series APS-C bodies only at present.

The only lenses currently on the market are from Sigma, which is offering a series of RF-S lenses that will be superior in performance to their equivalent Canon counterparts.  I suggest you do a search for Sigma RF-S lenses for more information.  There are also videos on You Tube about these lenses, which previously worked well with Sony MILCs.  They will be more expensive than the Canon ones: you get what you pay for...

[g_khajanchi]

RF lenses are designed for full-frame cameras – if used in APS-C cameras a 1.6x factor applies

Please suggest which RF-S lens available 

[Tronhard]

Crop sensor cameras apply that 1.6x factor to the focal length values for all lenses, whether FF or not.  The cropping is done at the sensor level and not at the lens level.  If you need more details, I suggest you read this:
Equivalence: Sensor Size, Crop Factor, Focal Length, and Field of View  

[Tronhard]

I had time to find you a couple of links:
SIGMA Introduces Lenses for Canon RF Mount: What You Need to Know | SIGMA Blog (sigmaphoto.com)
Review by Gordon Liang of Cameralabs: https://www.youtube.com/watch?v=hR-6zkPRPlY 

The RF mount explained - Canon Europe (canon-europe.com)

List of Canon RF and RF-S lenses:
Canon RF lens mount - Wikipedia

[Tronhard]

I repeat, you can use RF and RF-S lenses on Crop Sensor cameras, and they will ALL have the crop factor applied to their posted physical Focal lengths.  Please: READ THE ARTICLE!

If you want to browse the lenses available in your location, I suggest you do a search for RF and RF-S lenses and you will get the full list.   As I said, Sigma are releasing lenses specifically for the R-series APS-C cameras, they are definitely of superior performance: much depends on your budget, and what subjects you take - which only you know.

[shadowsports]

Greetings,

You can mount a RF or RF-S lens natively (without an adapter) on your R50.    Body's will come and go.  Lenses are the real investment in photography.  🙂