My thoughts about the XY: Wonderful camera, I like the styling following the slight angles of the IQ back housing, makes camera and back look like crafted in one piece. The programmable dials are useful, the top LCD is also neat, flush in the housing. Making the system modular and offering a waist level finder and different matt screens is perfect.
For me the critical key points are:
1. An auto-focus system of any new camera system today must have out-of-center focus points. From the released information it is not clear to me if that is available with the XY camera.
2. The camera with crop MF 50 MP CMOS back with it's high price will face tough competition by a huge choice of less expensive 40-50 MP cameras in 44x33/ 45x30/ 36x24 mm format (Z645, S, D810, A7r, 5DsR) that all also deliver professional image quality.
3. Considering the 60/80 MP 54x40 mm back options, I today would hesitate to invest so much money into a CCD back. There are too many drawbacks like lack of high ISO quality, degration of image quality with longer exposure times and especially when the sensor heated up. I have the feeling, a 100MP+ CMOS MF full frame back is at the horizon if Phase already advertises such optical ability of the Schneider lenses.
4. And: The software of camera and back must work as perfect as we are used from the Japanese camera manufactures (my IQ180 only works flawlessly since the very last firmware update, before I had several kind of touch screen insensitivity and cards writing problems).
Enclosed a IQ180 sample crop of a sky at ISO 35: upper one normal, lower one a few minutes later after the sensor heated up at 30°C + in the sun of Guangzhou.
I am wondering if the 3series IQ CCD backs show the same phenomenon or are improved or simply shut down earlier?