11-27-2025 10:46 PM
I am Using RF 200-800 with my Canon R5 Mark 2 . I was having plenty of Issues with Using AF - However Most are resolved reading through guides & community reading. However , One Thing is Still Bugging : When I start shooting Shutter Priority , and Start focussing after Zooming the Lens at 800( without aiming the Subject, I syaert with 800 straight , it Does not Auto Focus with Back Button or any Other mechanism. However, When I gradually start Focussing 500/600 and Zoom out to 800 , the Focus worked Fine and I got Good Shots. Is this a defect in my Lens or this is the way , this lens behaves ? Any responses on this will be appreciated.
12-02-2025 10:50 AM
Click of "Firmware" icon for version 1.2.0 firmware for R5 II.
https://www.usa.canon.com/support/p/eos-r5-mark-ii#idReference%3Dsoftware-drivers
12-02-2025 11:53 AM
12-02-2025 12:55 PM
Thanks !
05/13/2026: New firmware updates are available.
EOS R5 Mark II - Version 1.3.0
EOS R6 Mark II - Version 1.7.0
03/17/2026: New firmware updates are available.
SELPHY CP1500 - Version 1.0.7.0
01/20/2026: New firmware updates are available.
10/15/2025: New firmware updates are available.
Speedlite EL-5 - Version 1.2.0
Speedlite EL-1 - Version 1.1.0
Speedlite Transmitter ST-E10 - Version 1.2.0
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