Some clarification about level of drivers:
- Camera Driver (low level file needed by Camera to work with your OS, usually contains also the firmware will be loaded on camera for some brand/models) this must be installed in anycase and usually are not included in SDK and ASCOM driver
- SDK (mid level file for allow application to talk with the camera driver, can be used to direct access to camera) this not include camera driver usually depends on camera brands
- ASCOM Driver (ASCOM platform file allow all application compatible with ASCOM to work with camera, use SDK to access to camera driver) not include camera driver but usually include SDK, location of the SDK usually is not the right one for the application use only SDK … this is the reason if you install newer ASCOM driver not mean automatically you will have your application with updated SDK.
SDK with direct access is the most performant usually especially for CMOS with big size sensor.
All the best
Leonardo