Act444 said:
As a 5DSR owner, I would rank the following in order of importance in a version 2:
1) Better High ISO Performance/Higher ISO Limit
2) More Speed/Processing Power
3) Bigger Buffer
.......
7) Upgraded AF System (to 5D4/1DX2 level)
I own and use 5DSR as my main body and I agree with the order of importance given here. more megapixels would be welcome it it does not compromise the low and high ISO performance.
I think items 2 and 3 are doable with the use of more advanced Digic whatever and faster card slots and Canon will probably provide them.
I have taken good and acceptable pictures with 5DSR at ISO ceiling of 6400 but I cannot say that it can comfortably used in that territory. The question is that what technology Canon can bring on for better high ISO performance and raising ISO ceiling?
These days, the most promising technology that is put into all new Canon new releases is dual pixel DPAF. I understand DPAF can help improve the AF system, tracking moving objects and AF in video. These will be welcome additions but none are core functionalities for the 5DSR as a landscape/studio camera.
Can anyone clarify whether DPAF can help with the improved higher ISO performance?
Can on-chip ADC technology help? Definitely yes.
Can it drastically improve the high ISO performance? Probably no. Therefore, moderate increase of megapixels (to be ahead of marketing competition) and on-chip ADC with better signal processing software will probably deliver moderately better higher ISO performance.
Do we need backlit sensor or similar technology for much better higher ISO performance? Probably yes. Can it be done? Probably yes, but may need huge investment in sensor manufacturing and it will translate to higher production and hence product cost. Historically, Canon usually doesn't beta-test a new sensor technology in a high-end camera.
So the guess is that a bit higher megapixel sensor with on-chip ADC would be something to expect. It would probably be with DPAF, not because of being needed in 5DSR but because it is already part of the Canon's sensor manufacturing process.