Just watched the video. These new cameras are quite underwhelming IMO.
By the way I am also on 70D and was very disappointed that Canon decided to invest in the crop sensor.
The only compelling reason to look into these would be if you are a wild life photographer - maybe it would work well for you. But even with that - the guys from DP review are not that much impressed (because of how the AF behaves).
Maybe the lenses that you have work very well for you. If this is the case - perhaps the camera would work well. Just buy and adapter and that’s it.
I have 70D, 18-135 EFS, 50 1.4 EF and a flash. With this - if I am to stay on Canon (but go for full frame) - the only keepers would be the 50mm and the flash. Investing in crop sensor (because of the 18-135) is a no go (because I can see how inferior it is when it comes to sharpness comparing to the 50 1.4). If I did not notice it - it would have been okay but since I know it - I can see it all the time. Darktable helps me a lot actually but my best pictures are with the 50 1.4 EF.
- For crop sensor - I’d likely look towards Fuji (because of features). Downloaded few files to process in darktable and I am more happy than my 70D photos
- For small portable camera - especially if crop sensor - I may look for Sony
- I was considering very much Nikon full frames and the files are very nice. But with their move out of Japan - I am very hesitant the quality will stay the same.
Bottom line is - what type of pictures are you taking? What would be the benefit of the purchase? There is a better AF, IBIS in R7 but would you ever miss the full frame? Like better low light, wider angle on the shots? Do you crop the image?
Currently I don’t really like any of the canon cameras too much. R5 is probably the nicest but it is so expensive and even with that - it overheats (and that is not nice). R6 is good contender but it is 20 MP. For some reason often I have to crop in post. Looks like I am going to stay on my old 70D for now. So - 7-8 years and same 20 MP. Even my daughter’s phone takes 60 MP and she is not compelled at all to use my camera 