I think the proposed lineup is good but as Amarlez said, it's more complex than they have today. Canon have stated that they want everyone on FF at some stage, so why not shake up both your Prosumer & Pro market? I would have as my lineup
- Pro Line (think they might change the name).
4K Video to give RED something to think about
36MP
Better Focusing / ISO yada yada.
Merges 1Ds / 1D lines
Some new funky body design as suggested, which makes more sense for video
Touch Screen
Built in BT & wi-fi connectivity
- Prosumer
HD video
28MP
7D focusing
Merges 5D and 7D ranges, although the 7D as is will fall into a new xxD range
- Enthusiast
7D replacement (2012) with a few more MP
Articulating Screen
Compact Camera style editing functions - crop, auto-levels, proper B&W etc etc.
- Entry Level
The current xxxD range
Compact Camera style editing functions - crop, auto-levels, proper B&W etc etc.
So basically 4 models and that's your lot. Reduce manufacturing, boost development cycles as you are refreshing less often. Stop worring about overlap. Enthusiast / Entry are 1.6x crop, Pro / Prosumer are FF. You might add some form of automatic crop mode for FF so it "acts" like a 1.3x or 1.6x crop in the HW.
Canon also need to worry about- Better DR - Nikon has at least a 2 stop lead on them
- Actually using 14bits of colour - rather than 12. Again, Nikon/Sony appear better here on recent models
- Lower ISO as everyone requests - not a fudge
- Higher ISO performance which will match the latest D4 series.
- Open up the camera for developers. Either put the SDK/API on Android & iOS and give BT or wi-fi connectivity as standard, or add the equivalent compelling env. to the camera.
- Bring back tech into the camera such as the Depth mode that we had on Film cameras, or provide this in a nice I/F on the back of the screen
- Introduce tech such as voice control so I can focus on my subject and just tell it ISO 1600 or high burst. Not convinced about eye focus, but VC I think would be good for sports & nature and perhaps even paparazzi/wedding
- Consider square sensors - no rotation problems, higher quality MP
- Simple HDR to extend the DR
- Focus stacking tech - the camera provides focus bracketing, and SW stacks it all together
- Proper Auto-ISO where I can define what parameters I want to vary, what my min and max are for each parameter.
- Allow me to assign any button any function I want.
- Changeable sensor backs. This would be a big one. Dealer has to replace, but the issue is how to stop people taking a 36MP sensor, and adding it to the Prosumer model. Maybe this is a Pro range feature only.
None of these are my ideas - many others have had them...For me the usability of SLRs has not changed much since I got my first film EOS. Digital has improved quality and given me the ability to preview what I have done. But has the way I control the camera changed much? Not really. No leaps & bounds here. Shake it up Canon et al - open up your camera to developers and see what happens. Then it is just the HW which differentiates your models.
Finally, whilst in my "no, no, I can make a difference, Canon will hear me" mode

, I think a lot of people don't realise how much significant leaps in tech require companies - even as big as Canon. Witness how often Intel has really *changed* it's CPU architecture. Nikon took best part of 3/4 of a decade to get their act together, and have been developing it for the past 3 years. Canon not only got caught out resting on their laurels when Nikon release the D3 etc, but probably did not have any revolutionary tech programmes in place as they did not think they had to develop it.
So now they have had the last 4 years to effectively deliver "2 generations of tech" to match what Nikon will release, OR come out with something quite special to leapfrog the D4 range. I personally think the "special" tech is not here for this release, I just hope that they had the sense to design based on Nikon's continual evolution of their technology, and not catch up with the D3. Guess we'll all know in 2 months.