I am new to this forum but have a Fuji X-M1, X-E2 and just purchased an X-T1.
I have all of Ricos ebooks on the above.
I do not have a clear picture of how the electronics work and if I could get this it would greatly assist me in using the camera.
What I really need is an electronic block diagram of the sensor, amplifier, DAC and Digital processor and how it interconnects with the camera controls particularly ISO and EV.
I am a retired engineer with background in electronics.
I am quite comfortable with the explanation of the Fuji Sensor and its following analogue amplifiers whose gain is controlled by the ISO setting.
Given the sensor can only respond to the light hitting it, controlled by aperture and shutter, and the electronic signal thereafter increased to an amplitude dictated by the ISO setting (controlling the gain of analogue amplifiers).
The optimum signal to noise ratio will be achieved at ISO 200 and the electronic signal from the sensor at its optimum level, requiring no additional amplification. Unity gain ?
At this point I assume the signal amplitude is at its maximum ( and optimum ) level for further processing in the analogue to digital converter. ( an allowance will be in place for a %age overload in the ADC )
Rico mentions both analogue and digital amplification take place?
Once the signal is in the digital domain amplification is a mathematical process. I am quite conversant with this and can see why that will be needed in any processing of the digital signal, for example the conversion to JPEG or processing the RAW data in Lightroom.
Can I ask two questions.
Where, prior to the formation of the RAW datafile does the digital amplification take place.
Where does the EV control operate ? in the analogue domain or the digital domain.
Any guidance will be appreciated
Many thanks
Ianmac
I have all of Ricos ebooks on the above.
I do not have a clear picture of how the electronics work and if I could get this it would greatly assist me in using the camera.
What I really need is an electronic block diagram of the sensor, amplifier, DAC and Digital processor and how it interconnects with the camera controls particularly ISO and EV.
I am a retired engineer with background in electronics.
I am quite comfortable with the explanation of the Fuji Sensor and its following analogue amplifiers whose gain is controlled by the ISO setting.
Given the sensor can only respond to the light hitting it, controlled by aperture and shutter, and the electronic signal thereafter increased to an amplitude dictated by the ISO setting (controlling the gain of analogue amplifiers).
The optimum signal to noise ratio will be achieved at ISO 200 and the electronic signal from the sensor at its optimum level, requiring no additional amplification. Unity gain ?
At this point I assume the signal amplitude is at its maximum ( and optimum ) level for further processing in the analogue to digital converter. ( an allowance will be in place for a %age overload in the ADC )
Rico mentions both analogue and digital amplification take place?
Once the signal is in the digital domain amplification is a mathematical process. I am quite conversant with this and can see why that will be needed in any processing of the digital signal, for example the conversion to JPEG or processing the RAW data in Lightroom.
Can I ask two questions.
Where, prior to the formation of the RAW datafile does the digital amplification take place.
Where does the EV control operate ? in the analogue domain or the digital domain.
Any guidance will be appreciated
Many thanks
Ianmac