p.1 #1 · Returning after 6 years: Transitioning from EF to R5 via Adapter. What should I expect?
Hello FMers,
After nearly 6 years away from active photography, I’m finally jumping back into the hobby. Technology has moved at an insane pace since I last actively shot, and I’ve decided to make the leap into mirrorless with the Canon EOS R5.
Since I have a solid background with EF glass, my plan is to start by picking up an EF-EOS R mount adapter and using my existing EF lenses (currently owning a 7D Mark II, EF 100mm f/2.8L Macro, EF 100-400mm L IS II, EF 50mm, and Samyang 14mm f/2.8) before slowly building out native RF glass down the road. I also have a few crop lenses like the EF-S 10-18mm and EF-S 24mm, but I will be selling those along with the 7D2.
For those who have made this exact transition from DSLR to the R5 with adapted lenses, I’d love your insights on a few things:
EF Adapter Performance: How seamlessly does older EF series glass perform on the 45MP R5 sensor? Any quirks with AF speed, IBIS synergy, or battery drain I should watch out for?
EVF & Mirrorless Adjustment: Coming from optical viewfinders, what setting tweaks or battery management habits made the biggest difference for you when setting up the R5?
Firmware & Known Quirks: Are there specific menu settings or firmware updates critical for optimizing adapted lenses on the R5?
I’m currently in the process of hunting down a clean, low-shutter R5 body (aiming for mint condition under 10k actuations) to kickstart this new setup and get back out shooting. If you have any advice, lesson-learned tips, or general recommendations for someone stepping back in after a 6-year hiatus, I’d greatly appreciate it!
p.1 #2 · Returning after 6 years: Transitioning from EF to R5 via Adapter. What should I expect?
If your needs include action I usggest going directly for the R5 II.
Adapted lenses work just fine, but use the Canon rather than 3rd party. The newer lenses since about 15 years ago should work at high speed, whereas the older ones are lower FPS. Check the manual for the compatibility, but they will all function and AF well, even better than the DSLRs in some cases. I still use the 500/4 IS II regularly with the EF 1.4x III on the R5 II for example. I also have used 3rd party EF lenses, the 16-35/4 IS, 24 TSE II, 200-400/4 etc.
You might want to get the RF-EF adapter with the control ring or even the one with the filter drawer if you have ultra-wide lenses that don't take filters. I have two adapters to avoid swapping.
