11-03-2023 02:34 PM - last edited on 11-03-2023 02:38 PM by Danny
Is the new (RF-S10-18mm F4.5-6.3 IS STM) lens compatible with an EOS R body? Canon advertises the 10-18mm for the APS-C camera, but gives no additional insight if that discounts the use of a non-APS-C camera.
Or as usual, am I reading too much into this?
Denver
11-03-2023 02:49 PM
Yes, you can use any RF or RF-S lens on any R-Series camera.
However, when using an RF-S lens on a full frame R-Series camera, you'll need to use the 1.6x crop mode. That will lead to images using 2.56 times less resolution then when using the full sensor. 2.56 x is found by squaring 1.6 (you have to apply the crop factor to both width and height dimensions; hence using its square).
The User Manual states on page 80 that when using EF-S lenses, the 1.6x crop will automatically be selected. Not sure if it will also automatically do that for RF-S lenses.
11-03-2023 04:34 PM
RF-S lenses causes the camera to auto crop. Just like a Canon EF-S lens. Some third Party lenses may need to be set to 1.6x crop mode.
12-20-2023 03:44 PM
Thank you Very much for your insight, it is appreciated! Both responses in the forum gave me the answer.
Denver
11-03-2023 06:42 PM - edited 11-03-2023 11:31 PM
I am not a proponent of APS-C lenses on a FF body. This lens will effectively turn the EOS R's 30.3MP images into 11.6MP images.
If you plan to put them on a smart phone or small prints, its probably fine.
I would do some research as this is not something I would recommend due to this limitation The RF 10-20 would be a better choice and will be available soon.
~Rick
Bay Area - CA
~R5 C (1.0.7.1) ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, ~RF 200-800 +RF 1.4x TC, BG-R10, 430EX III-RT ~DxO PhotoLab Elite ~DaVinci Resolve Studio ~ImageClass MF644Cdw/MF656Cdw ~Pixel 8 ~CarePaks Are Worth It
12-21-2023 10:49 AM
Plus your 10mm will no longer be 10mm. Full-frame models provide for a 1.6x crop corresponding to a section of the sensor similar in size to an APS-C size sensor. "The RF 10-20 would be a better choice and will be available soon." Bingo! 🤔
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