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Android Camera Hacking Academy

181 members

14 June 2026

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Android Camera Hacking Academy

mikunatext not yet in the index

hope you talking about other Roma... 😁

M

Replyhope you talking about other Roma... 😁

I know 2, which one are you talking about? 😁

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Android Camera Hacking Academy

mikunaI know 2, which one are you talking about? 😁

As long as one of them is not me i dont give crap

mikunatext not yet in the index

Sure you won't avoid the processing, but you'll be more immune to it. I think you can make sure that what you see isn't just noise

For example, if you shoot a diffused lamp in the middle

Then an expo short enough that it's invisible will mean that middle of raw and sides will look identical

You can start by measuring linearity

By presuming that linearity of exp time is better than linearity of output

T

(because I think it's actually true)

M

TadiYou can start by measuring linearity

Linearity of what? Adc?

mikunaLinearity of what? Adc?

On a sensor with white level of 1023 and black level of 64, when the pixel value is 464, halving the expo is meant to get you pixel value 264, then halving again is meant to give you 164 if sensor's output is perfectly linear

T

So, you can at the very very least measure linearity of output

M

TadiOn a sensor with white level of 1023 and black level of 64, when the pixel value is 464, halving the expo is meant to get you pixel value 264, then halving again is meant to give you 164 if sensor's output is perfectly linear

So, measuring adc linearity?

mikunaSo, measuring adc linearity?

Not ADC's because sensor can has its own linearization enabled

T

But yes, sensor's linearity

M

TadiBut yes, sensor's linearity

Have you tried before doing so?

mikunaHave you tried before doing so?

Nope, you're better at coding than me probably

T

But you can use this later to measure DR

M

TadiNope, you're better at coding than me probably

All things I have tested were linear

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TadiBut you can use this later to measure DR

Immune to dithering and noise filtering, etc

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Android Camera Hacking Academy

ЖеняФотография

Send the raw footage to Bill Calff who runs Photons to Photos, i trust his methodology https://www.photonstophotos.net/Investigations/Measurement_and_Sample_Variation.htm

M

ReplySend the raw footage to Bill Calff who runs Photons to Photos, i trust his methodology https://www.photonstophotos.net/Investigations/Measurement_and_Sample_Variation.htm

Is his methodology public?

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Android Camera Hacking Academy

mikunaIs his methodology public?

Message him on DPReview or email he probably give you link or explain how to take raw footage he need for building his charts, he does have iPhone there so might be willing to add android phone in the list as well.

M

ReplyMessage him on DPReview or email he probably give you link or explain how to take raw footage he need for building his charts, he does have iPhone there so might be willing to add android phone in the list as well.

What's the reason for measuring iphone if getting "pure" raws is almost impossible there

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mikunaWhat's the reason for measuring iphone if getting "pure" raws is almost impossible there

Motioncam can do this

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