in camera double exposure canon 7d firmware

He can't afford my $2500 fix of upgrading to the RF 100-500mm L.

I've been talking my friend in to upgrading from his T7i, but I have to take back the recommendation because he uses a Sigma 150-600mm C. If Canon reads these posts, my advice would be to get this sorted out or let Sigma know it's OK to fix it. I think they all worked on the original R6? Pretty sure these lenses are also fine on the original R. I'm guessing it's the same with the entire Irix lineup, but I haven't tried them all. This body/lens combo does not work AT ALL. This lens will freeze the R6 Mark II until you remove the battery. That leaves the user in the lurch.Īnother TOTAL incompatibility is the Irix 11mm ultra wide MF lens. Please don't blame the victimĪs far as I can conjecture, Sigma won't address this problem in fear of Canon coming after them, and Canon won't update their firmware to suit some other manufacturers lens. FWIW, this issue is also discussed on some YouTube posts. If you're shooting in Servo, the AF will 'pulse' when shooting something near the MFD. But I thought I might warn others that some versions of this lens have incompatibilities with the newer R bodies. I am upgrading to an RF 100-500mm L, so it won't be an issue for me moving forward.

In camera double exposure canon 7d firmware