StudentOfLight said:
Thanks for the clarification.
So fixed lens...
Focal length? Max aperture?
A test bed for sensor stabilization perhaps?
Leica and Sony (and just about any cell phone) have it right. If you only have one lens, it should be 28-35mm FF and as quick as you can make it without making it huge. Leica opted for 28mm f/1.7 and Sony opted for 35mm f/2. Either would be fine.
As far as why Canon would do this, it's a test bed for anything, but presumably for
things Canon doesn't already have in its pocket. IBIS comes to mind, sure, but step back from a feature and think about the user experience at a higher level. The general handling of a device with a different form factor is... different. The EOS M1, M2 sort of 'flat brick' design doesn't work well once full frame + quicker lenses get attached (e.g. Leica rangefinders feel like Lego handles in a not good way, Fuji X-Pro 1/2 are bricky and not fun to handle). There's a delicate balance of 'mirrorless is all about being thin' :

vs. 'I just bought it and slapped a 70-200 f/2.8 on it and my wrist hurts and I'm really disappointed about this experience' :

:

:

that Canon must shrewdly navigate.
And then, on top of that, presuming the FF ILC that is coming
doesn't come with an integral EF mount --
a conversation we will not further here as it's on 100 other threads at CR -- the top of the camera will be 'busier' / tighter for space, so knobs / buttons and such need to be carefully located while honoring the FF SLR controls people love so much. You don't want to speak two different 'control languages' with a 5D on one shoulder and FF mirrorless on another. Again, a 'test' fixed lens body might give them some user insights to leverage for the bigger deal FF ILC to come later.
- A