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I had a go at the FX3 and yes finally a Sony mirrorless body I felt comfortable with! The build quality is also a step up and the added air vent is reassuring. I could see myself switching back to Sony from Canon with this body. Paired with a FX/FS cine cam it would be a very strong combo for my line of work.

It does (if you switch it on).

In Sony Semiconductor Imaging's laboratory.

I have owned the R5 since December of 2020. I can't speak to the IDXIII, having never owned one, but I do have access to an R6 and have been playing around with that camera for several weeks now. I still prefer having the R5 over the R6 even after latest FW update for the R6. Mostly because R5 has: 4K 120fps that looks great 8K Canon RAW Lite 45MP stills that look absolutely amazing Custom video modes! Hitting record button in photo mode switches to C3 video (It's switches to fully auto mode in R6, yuck). I use 3 custom settings: 4KHQ 24fps, 4K120, 4K non-HQ on C3. Hitting record button in photo mode jumps to this setting. The R6 is pretty good but still inexplicable crippled in weird ways–the lack of custom video modes being the biggest one imho. This has been the single biggest pain in the ass when using the camera. You simply can't use it very fast when switching between 24fps or 120fps. Battery life on the R6 seems to be better than the R5 in cursory usage. I haven't thoroughly tested. Rolling shutter on R6 leaves a lot to be desired. Much prefer the 4K120 out of the R5 to the 1080 from R6. R6 AF shits the bed in moderate low-light situations compared to R5. The R5 has a much better 1.6x video crop mode. Overheating has not been an issue for me (on either camera) but I don't shoot long form stuff and if I did I would just use the regular 4K mode or a proper cinema camera. Sony is still the better option if you want a small mirrorless camera to record for longer periods of time and with quick recovery times. Editing performance has not been a problem whatsoever on my M1 MBP. I hear it's painful for a lot of people so if that is you don't get a Canon mirrorless camera until there is widespread support for hardware accelerated H.265 10-bit 4:2:2. I'm still very happy with getting the R5 over the something from Sony. A7SIII is great but I wanted more MP if I was going FF as I was coming from Micro Four Thirds. I also enjoy the Canon body ergonomics more than Sony and that is pretty important aspect for me. Things I don't like about RF system as a whole (at time if writing): Lack of wide angle fast primes (16,18,20mm f1.8 or faster) The RF lens ecosystem is expensive (but there is always EF). No RF Sigma options...yet. Overheating timer is there and could potentially be a problem (it hasn't been for me). Really surprised Canon is releasing major firmware updates with major features. I hope they continue this.

It was $600 for the camera(after taxes) and $580 for the Pix E5 plus two 256gb ssds. Still a pretty good deal IMO. I bought a bunch of cables and other accessories to help kit it out. Hoping to put together fairly ergonomic rig with it powered off of a single V mount battery. My other option was getting an Alexa Classic. But the F3 is 1/3rd the weight, 1/4 the power draw, and has internal ND's. It doesn't have the Alexa's dynamic range but I think the color science is just as good. It will be my personal project camera and for clients who don't ask for 4k, which is most of my clients honestly. I actually looked at the F5 as well. I think its a really cool option with 4k 60p 422 and a global shutter. 3200 iso also seems pretty nice on it. I think Sony dropped the ball with their color science after the F35 and F3 though.

I have a R5 since October 2020. I had a 1Dx III from march 2020 until two weeks ago, sold it to buy an additional R5. Never used an R6 so I cannot comment on that. I basically have 2 custom settings that I use for video: 8k RAW Light 24-30 fps and 4k 120 fps Clog (rarely use Clog3). Rarely I use 4k HQ IPB with no log if I need to give the video for some quick and dirty usage without any further processing. R5 is imo a much better camera than the 1Dx III: 8k RAW is better that 5.5k RAW not for the resolution (although it give some more room for post zoom and pan) but mostly for the much better rolling shutter 15 ms vs 29 ms 4k 120fps is way way better than the junk 1080 120 of the 1Dx III. Crop quality is a tad better Lightweight, better on Gimbals Smaller to pack, basically I can take 2 R5 in the space and weight of a 1Dx III, if you add the insane big charger of the 1Dx III you can take a gazillion number of R5 batteries….. Flippy screen much better on Gimbals and in low angles 45 mpix much better than 20 mpix for photo Has zebra IBIS, IBIS + IS lens allow me to film quite a bit without a tripod, very handy for filming while backpacking for ski, mtb, etc….. EF-RF Adapter with VND 1Dx III is better in: No overheating Initial AF acquisition with long lenses but only for photos in non liveview mode. Has 5.5 RAW at 60fps but no AF Longer battery life Same dual card type More rugged and better weather sealing The biggest gain for me with the last firmware is the RAW Light that basically give me almost 2x storage. I’m a fan of RAW as it give me more flexibility in post than Clog and Clog3…. is probably me not doing it right but for me is a night and day difference RAW vs. Clog how much more post processing I can do and fix mistakes. Bonus that on my PC the RAW Light file are much easier to edit than 10bit Clog ones. At the end the only question is if you need long takes and in case that things go south can you live with 4k SQ if the camera would overheat? In my case it has never overheated in 8K RAW Light in my usage (but it will eventually happen). I got at the limit a couple of times at 30-35° C under the sun shooting at 4k 120 fps, this is the mode that seems to overheats the most.

Above must be my favorite post of the year @kye Super effective in showing colour response and metric and relation of pleasing palette and response to exposure in comparison to "objective" colours such as of GH5. Thanks a lot!