I'm hoping I can get an answer to what is probably a relatively obscure topic, the thickness of the stack of glass sitting over the sensor (if there even is any) in the ZWO cameras. I'm currently using a variety of ZWO cameras, right now my main one is the 2600mc Pro, and am adapting lenses to use them at wider focal lengths. ZWO doesn't make an adapter to use Sony e-mount lenses, but thanks to the ingenuity of a cloudynights poster I was able to get one 3D printed and it's worked quite well with some Voigtlander lenses. Voigtlander is currently releasing APO lenses designed for two different mounts, the first being a Leica M-mount version and the other a Sony E-mount version. The difference between the versions being that the Sony E-mount camera has a stack of glass sitting above the sensor that is substantially thicker than that of the M-mount. The thickness of the sensor stack affects the corner sharpness of the image, when a M-mount lens is adapted to a Sony E-mount camera the corners are often smeared. I've noticed when I do a CCDInspector tilt analysis on shots I get some fairly severe tilt into the corners even with the lens perfectly centered in the image and I'm wondering if it's because of different sensor stack thickness of the ZWO camera.
So can a ZWO rep help me get an answer to this question, do the sensors in the ZWO cameras have any kind of sensor stack/glass sitting over the sensor (besides the UV/IR cut or AR glass near the top of the camera body)? Or is the sensor "naked"/exposed when you open up the camera with nothing sitting above it? If ZWO doesn't use any kind of glass stack above the sensor it may be better to use the M-mount versions of lenses to improve the corner sharpness.
Thanks!
