I recently discovered sensorgen.info. I think I need a little tutorial to understand everything. I understand the basics of read noise, saturation and dynamic range. However, I have some questions beyond that.
1) If you're mainly focused on collecting data that is very faint, would the camera/ISO setting with the lowest read noise always be preferable (usually the highest ISO)? This way you don't need a lot of data for it to rise above the read noise. I know at these settings the sensor is more easily saturated (lower DR), but really the goals are the data in the shadows and I'm ok with blown out stars or bright areas.
2) If two sensors have the same ISO and the same DR but a different read noise + saturation pairing, which one is better. I'm interpreting this to just mean that the sensor with the higher read noise + saturation would just require longer exposures but give an equivalent image in the end.
3) What is the difference between measured ISO and ISO.
4) Some sensors have a greater than 100% QE. Is this a bug?
5) What makes a sensor so great? I know the Nikon D5000/7000s have a very high DR at low ISOs. Would this mean I would need to use ISO 100 and expose for very long periods of time to maximize it?
Edited by joelin, 13 March 2017 - 03:52 AM.