Firmware: Canon RF 50mm f/1.2L USM v1.0.5

Canon Rumors Guy

EOS-1D X Mark III
CR Pro
Jul 20, 2010
8,526
1,230
Canada
www.canonrumors.com

mrproxy

EOS M50
Aug 6, 2018
27
50
" Reduces image noise when performing high sensitivity shooting with the RF50mm F1.2 L USM lens attached to the EOS C70 camera." - How lens FW can change something like this?
 
  • Like
Reactions: YuengLinger

koenkooi

EOS R
CR Pro
Feb 25, 2015
1,449
1,247
" Reduces image noise when performing high sensitivity shooting with the RF50mm F1.2 L USM lens attached to the EOS C70 camera." - How lens FW can change something like this?
I suspect the vignetting correction data in the lens was ever so slightly off and that caused the C70 to ramp up exposure a tiny bit. I can't think of anything else that a lens firmware can fix when it comes to image noise :)
 

YuengLinger

Sufficiently Pixilated
CR Pro
Dec 20, 2012
3,237
1,521
USA
I suspect the vignetting correction data in the lens was ever so slightly off and that caused the C70 to ramp up exposure a tiny bit. I can't think of anything else that a lens firmware can fix when it comes to image noise :)
If the data is off in the lens, then why does the update note suggest this is only for the C70? I do like your guess, though! Just wondering why it doesn't benefit R bodies...As it stands, I don't see a reason for somebody with no intention of using a C70 to install this update.
 

koenkooi

EOS R
CR Pro
Feb 25, 2015
1,449
1,247
If the data is off in the lens, then why does the update note suggest this is only for the C70? I do like your guess, though! Just wondering why it doesn't benefit R bodies...As it stands, I don't see a reason for somebody with no intention of using a C70 to install this update.
My guess is that the firmware in the C70 exposed the bug in the lens firmware and Canon decided that the C70 firmware team was right.