We have noticed the ADTG amplifier tends to run a little 'hot' (that means, it gets saturated a little too early - nothing to do with temperature). After these two stages, the signal is digitized (with an ADC), probably tweaked digitally, and saved to CR2. The signal from the sensor seems to be amplified in 2 stages: a CMOS amplifier (which operates in full stops - powers of 2 - and we have tweaked it when implementing Dual ISO) and an ADTG amplifier which can be configured in finer increments.

I had been following this story for a little while since Magic Lantern originally tweeted that a 'sensor upgrade' was coming, and even though I was reading the exact thread related to the 'sensor upgrade,' the situation still wasn't all that clear, especially since the tech talk is pretty dense (not unlike how some NFS posts must feel to people just starting out - including this one). This new hack has been tested the most on the Canon 5D Mark III and has a greater effect on RAW photos than RAW video, but a1ex has posted a detailed Q&A explaining exactly what's going on: Now they've got another trick up their sleeve that can actually improve dynamic range about half a stop - but there are some caveats at this early stage. They were able to pull a rabbit out of a hat and give us RAW video on Canon DSLRs, which is a huge step up on video quality from the standard H.264 files the cameras normally record to. Those part of Magic Lantern are always hard at work tinkering away to give us mere mortals better cameras at zero cost.

Accessing magic lantern canon t5i