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Tutorial:
ISO DSLR: What's going on inside the camera?


ISO setting in DSLR cameras

  1. A look inside a DSLR camera sensor

1: A look inside a DSLR camera sensor

A DSLR camera has some limitations in the readout among other things compare to a CCD camera.

ISO DSLR

Here I will give a very simple explanations how it works.

ISO DSLR

Detecting photons in a pixel.

ISO DSLR

The efficiency of detecting photons, QE.

ISO DSLR

The different steps to read out an electrone, gain, ISO, ADC, digital number etc.


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ISO DSLR

Resolution of an ADC, Analog Digital Converter.

ISO DSLR

Problems when doing a readout from a DSLR camera.

ISO DSLR

Rounding errors, readout noise, limited dynamic.

ISO DSLR

Strong signal and overexpose problems.


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ISO DSLR

Lowering the ISO setting to not overexpose.

ISO DSLR

Weak signals.

ISO DSLR

Increase the ISO setting to detect weaker signals.

ISO DSLR

Detecting the weakest signals, half electrons? No!


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ISO DSLR

Stacking images and increase the dynamic.

ISO DSLR

HDR with different exposure length or different ISO settings.

ISO DSLR

Background noise, narrow band, H-Alpha.

ISO DSLR

Increasing the number of images increase the signal to noise relations.

ISO DSLR

High dynamic data needs high bit software editing tools.

ISO DSLR

I hope this gave some explanation how to plan your night time photos for astronomy.

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