There are sometimes special effects shots where it makes sense to only record a square image or even an upright rectangle, because evrything else is keyed out anyway. If I want to have maximum vertical resolution for these shots, I have to record 4520x2540, with the attached data sizes, when all I really need is the data of, say, 2000x2540.
Other example: I want to output on film in Cinemascope, but need 120 frames/sec. So why not have a format that uses as much sensor space, ie resolution+DOF, only restricted by the data flow that can still be calculated by the camera at 120 frames.
It would be great to have any size format you need available.
For usability reasons, these need not be changed in the camera menus, you might have an external application that runs on your PC/Mac, where you dial in the vertical/horizontal resolution and/or the frames/sec that you need, or maybe even the data rate you want to deal with, the program calculates a setting and I can import that to the camera as a custom setting by a USB stick.
Other example: I want to output on film in Cinemascope, but need 120 frames/sec. So why not have a format that uses as much sensor space, ie resolution+DOF, only restricted by the data flow that can still be calculated by the camera at 120 frames.
It would be great to have any size format you need available.
For usability reasons, these need not be changed in the camera menus, you might have an external application that runs on your PC/Mac, where you dial in the vertical/horizontal resolution and/or the frames/sec that you need, or maybe even the data rate you want to deal with, the program calculates a setting and I can import that to the camera as a custom setting by a USB stick.