Comparison of R5, R5II and the R3

[Tronhard]

If you can deal with the presentation style, Jarod Polin has released a comparison review of these cameras to get those of us who are stuck with a decision as to where to go.  If you are looking for a reasonably detailed overview, you might find it worth a view.

[johnrmoyer]

Thanks for the information you have provided.

Canonrumors mentioned a patent application for cooling a camera.

https://www.canonrumors.com/canon-patent-application-actively-cooled-small-cini-camera/

https://www.j-platpat.inpit.go.jp/c1801/PU/JP-2024-135864/11/ja has 24 drawings

"(19) [Issuing country] Japan Patent Office (JP)
(12) [Publication type] Published patent gazette (A)
(11) [Publication number] JP2024-135864 (P2024-135864A)
(43) [Publication date] October 4, 2024 (2024.10.4)
(54) [Name of invention] Imaging device"

(57) [Summary] [Problem] To efficiently cool a recording medium while suppressing an increase in size. [Solution] A control circuit board (110) is approximately perpendicular to the optical axis direction. A media slot (118) is mounted on the control circuit board (110) at a position that does not overlap with a gripping part (120) when viewed from the optical axis direction. Heat dissipation ducts (first duct (111), second duct (112) and cooling fan (113)) are arranged at positions that do not overlap with the gripping part (120) when viewed from the optical axis direction, and are thermally connected to the media slot (118). [Selected Figure] Figure 5

EDIT: also https://www.canonrumors.com/canon-patent-application-cooling-of-a-small-r5c-like-camera-with-ibis/