Here is a user review of the QHY268C and it has everything about QHY268C
The QHY268C now have PhotoGraphic version , early bird version and the future PRO version(scientific using ). Photograh version is $300 less than the early bird version. . QHY247C has a price adjustment and it is now $400 less than QHY268C Photograhic version.
The major differerent is that one is BSI and one is FSI. Normally speaking BSI has higher QE, And for QHY268C it has a speically readmode with 75ke fullwell which is also a highlight. And one is 16bit one is 14bit.
It does not say QHY247C are all not good as QHY268C. It is said the FSI has some advantages than BSI. FSI has no the "random hot pixels" but you can see such hot pixels in some BSI sensor . Another topic is that some people in DSLR world say the FSI sensor has more saturated color , sepcially in red color , than the BSI sensor. I guess the reason maybe the BSI structure , due to the electron is more easy to spread to the neighbor pixels. So it will cause the color crosstalk.(for example, some electron in green pixel come to the red pixel). Normally speaking, more smaller pixel , the color crosstalk in BSI sensor will be more heavy.
Fortunately, the big fullwell of QHY268C will save it. For more deep fullwell, you are more easy to get higher color contrast. So the 75ke fullwell of QHY268C will worth a lot.
Edited by QiuHY, 19 April 2020 - 01:18 PM.