Solved: Electronic shutter – was it used ?

I am making a wild guess here. I used exiftool -v -U to dump 3 black frame photos made in manual mode with the three shutter modes and looked at the differences. The “100” value for flash info is there for electronic shutter and not for electronic first curtain nor for mechanical. This might be a way to identify use of electronic shutter if there is different flash behavior in elctronic shutter mode. I have also included two other diff fragments that I might guess would be worth looking at.

 

< | | | | 2) CanonFlashInfo = 100 0 0 0

> | | | | 2) CanonFlashInfo = 0 0 0 0

 

In this diff fragment, electronic shutter is to the left and mechanical shutter to the right:

2692c2692
< | | | | Canon_CameraInfoUnknown_0x09ed = 29

> | | | | Canon_CameraInfoUnknown_0x09ed = 3
2732c2732
< | | | | Canon_CameraInfoUnknown_0x0a15 = 2

> | | | | Canon_CameraInfoUnknown_0x0a15 = 0
2912c2912
< | | | | Canon_CameraInfoUnknown_0x0ac9 = 100

> | | | | Canon_CameraInfoUnknown_0x0ac9 = 0

 

In this diff fragment, electronic first curtain is to the left and electronic shutter is to the right:

2692c2692
< | | | | Canon_CameraInfoUnknown_0x09ed = 1

> | | | | Canon_CameraInfoUnknown_0x09ed = 29
2732c2732
< | | | | Canon_CameraInfoUnknown_0x0a15 = 1

> | | | | Canon_CameraInfoUnknown_0x0a15 = 2
2912c2912
< | | | | Canon_CameraInfoUnknown_0x0ac9 = 0

> | | | | Canon_CameraInfoUnknown_0x0ac9 = 100


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