Desire to Test X-E3 for PhotonsToPhotos

bclaff wrote:

michaeladawson wrote:

bclaff wrote:

michaeladawson wrote:

nixda wrote:

There is some misunderstanding here. Just because base ISO is 200 doesn't mean there is 1EV less DR. If base ISO was 100, then ISO 200 would have 1EV less DR, but it is not.

One also has to be careful when it comes to sensor DR and ISO values. The base DR is what it is. It only depends on the characteristics of the sensor and the electronics surrounding it. When talking about ISO though, one needs to take the JPEG engine into account. ISO relates to mapping of incident light to output JPEG. As such, how the system is calibrated with respect to middle grey has important consequences.

Regardless, Fuji camera in Bill's measurements seem to have 1 stop less PDR than Sony sensors in other cameras.

I'm not seeing that.
Are you sure you don't mean 1 stop higher base ISO ?

Maybe I'm reading your charts wrong. But a Sony or Nikon camera seems to show a DR of around 11 or more at ISO 100. The Fuji cameras top out at a PDR of 10.

So if I want maximum PDR I can shoot a Nikon or Sony at ISO 100 and get a 1+ stop extra PDR. Am I reading your charts right? Or does the PDR charts not show DR?

Right; you're talking about maximum PDR, not PDR at a particular ISO setting.

Yeah, Fuji seems to suffer a 1 stop penalty.
I don't know why.
Conjecture: The "toppings", low pass filter, OLPF, microlens, CFA; can be customized so it might be a combination of those being different.

DPReview seems to think that, when increasing exposure, the sensors in the Fuji cameras saturate faster than the equivalent Sony implementations.

I think I have asked you a long time ago if your measurements allow you to deduce FWC. I can't remember the answer now. But it could be that Sony and Fuji use different ranges of the linear portion. Or maybe Sony is using some of the non-linear part.