Author Topic: DIGIC 8 'PowerShot' development (M50, SX70, SX740)  (Read 32545 times)

Greg

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #150 on: June 04, 2019, 11:37:41 PM »
M50 1/200s ISO 100 - White Level

Exif -  11892

Looking at the raw data:
R - 16383
G - 15500 safe limit for my camera
B - 16383

Green channel clipping 15750 :


 ???

Greg

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #151 on: July 26, 2019, 10:31:08 PM »
M50 bit depth

Single - 14-bit
Continuous Low - 12-bit?
Continuous High - 12-bit?

Histograms (single, continuous low, continuous high) :


If you want to use 14-bit exposure bracketing, you need to quickly press the shutter button, continuous modes are not 14-bit.

71m363nd3r

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #152 on: July 27, 2019, 02:11:51 AM »
Intresting...
How did you test it?
Just curious.

Greg

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #153 on: July 27, 2019, 06:36:16 PM »
These histograms show dark frames (lens cap photography).
Look at the histogram and you'll see the missing bits. It looks like 12-bit converted to 14-bit.

c_joerg

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #154 on: August 04, 2019, 04:37:39 PM »
M50 bit depth

Single - 14-bit
Continuous Low - 12-bit?
Continuous High - 12-bit?

The manual says that the data for continuous recordings are converted into 12 bits...
6D

Walter Schulz

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #155 on: August 04, 2019, 07:27:26 PM »
Do you have a link to said manual? It's embarrasing but all I can find online is a manual resembling a pre-school children book.
Photogs and videographers: Assist in proof reading upcoming in-camera help!. Your input is wanted and needed!

c_joerg

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #156 on: August 04, 2019, 07:37:38 PM »
Do you have a link to said manual?

Only the German version ‘EOS_M50_Help_Guide_DE.pdf’
https://www.canon.de/support/consumer_products/products/cameras/digital_slr/eos-m50.html?type=manuals&manualid=tcm:83-1667469
Page 88 or search about 12 bit.

The M5 also has 12 bit  in continuous mode...
6D

Walter Schulz

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #157 on: August 04, 2019, 07:49:48 PM »
Thanks! Found english "help-guide" here: http://gdlp01.c-wss.com/gds/2/0300030642/02/EOS_M50_Help_Guide_EN.pdf and the information about continuous shooting bit-depth on page 88, too.
Photogs and videographers: Assist in proof reading upcoming in-camera help!. Your input is wanted and needed!

Greg

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #158 on: August 05, 2019, 12:18:27 AM »
M50 - rolling shutter measurements - https://www.magiclantern.fm/forum/index.php?topic=23040.msg208479#msg208479

It looks like we have 3 readout modes :
Code: [Select]
timer A = 534, timer B = 4061 @ E19EBAC8
timer A = 1064, timer B = 4061 @ E19EBB20
timer A = 772 timer B = 4061 @ E19EBB78

Code: [Select]
[SHTC] ShutterType(1) ReadOutMode(1) ReleaseType(1) // Manual mode, mechanical shutter
[SHTC] ShutterType(3) ReadOutMode(0) ReleaseType(1) // Silent mode, electronic shutter
[SHTC] ShutterType(1) ReadOutMode(0) ReleaseType(2) // Manual mode, mechanical shutter, AEB continuous

ShutterType(1 - mechanical, 2 - ???, 3 - electronic rolling shutter) // 2- electronic global reset?
ReadOutMode(0 - 12 bit, 1 - 14 bit, 2 - ???)
ReleaseType(1 - ???, 2 - ???)

The manual says that the data for continuous recordings are converted into 12 bits...
I didn't know about it.  :o

Greg

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #159 on: August 06, 2019, 12:00:56 AM »
Banding correction 200D (M50 also has this problem) before/after :


dpreview

71m363nd3r

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #160 on: August 07, 2019, 12:03:02 AM »
Banding correction 200D (M50 also has this problem) before/after :


The EOS R too, just compared it.

Sapporo

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #161 on: August 07, 2019, 02:48:47 PM »
Banding correction 200D (M50 also has this problem) before/after :


dpreview
Any tutorial how to remove that kind of banding? Or just dark frame substraction?
The EOS R too, just compared it.
Didn't the latest firmware for EOS R solve that?

Greg

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #162 on: August 07, 2019, 05:43:05 PM »
The EOS R too, just compared it.

EOS R (before/after)


Any tutorial how to remove that kind of banding? Or just dark frame substraction?Didn't the latest firmware for EOS R solve that?
I don't know if I should publish this script, maybe I should sell it to Canon?

Sapporo

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #163 on: August 07, 2019, 06:29:26 PM »
EOS R (before/after)

I don't know if I should publish this script, maybe I should sell it to Canon?
Is that EOS R with the latest firmware 1.2.0? I saw samples of before/after with big difference. But yes, your script is impressive.
https://youtube.com/watch?feature=youtu.be&v=dfenxw0OKbc

RandomSynr

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #164 on: August 12, 2019, 06:22:35 PM »
My first post, I am the owner of an M50.  I eagerly await ML for it.  I am trying to read as many posts as possible.

Am I right to say ML for m50 is still experimental?  I will follow these posts for updates and advice.

Cheers

walter_schulz

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #165 on: August 12, 2019, 09:50:09 PM »
There is no ML for M50 and don't hold your breath.

RandomSynr

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #166 on: August 13, 2019, 05:23:17 AM »
No hope in life, takes out knife and cuts cheese and pours wine...  ;D

well if there is anything that can be done, I'm sure some on may be doing something or maybe just drinking wine and eating cheese

71m363nd3r

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #167 on: August 13, 2019, 06:36:42 PM »
No hope in life, takes out knife and cuts cheese and pours wine...  ;D

well if there is anything that can be done, I'm sure some on may be doing something or maybe just drinking wine and eating cheese

Are you willing to donate few bucks ?

dfort

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #168 on: August 16, 2019, 04:12:57 AM »
There is no ML for M50 and don't hold your breath.

Well there is this fishy build -- which requires setting the camera boot flag:

BOOT_M50.FIR (confirmed by 71m363nd3r; works on any Canon firmware version)

This will modify your camera.

Right now I'd really like to unset the camera boot flag because when inserting a card that has ML for another camera on it the M50 just goes into a coma. I'd ask for a FIR file but last time I asked for something--well, I won't ask.
5D3.* 7D.206 700D.115 EOSM.203 EOSM2.103 M50.102

Greg

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #169 on: August 16, 2019, 05:10:03 PM »
Right now I'd really like to unset the camera boot flag because when inserting a card that has ML for another camera on it the M50 just goes into a coma.

https://www.magiclantern.fm/forum/index.php?topic=17360.msg204747#msg204747

dfort

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Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« Reply #170 on: Yesterday at 03:54:33 PM »
Thanks Greg, that was easy.

Anyone else who wants to do this make sure you also set CONFIG_BOOT_BOOTFLAG=y
5D3.* 7D.206 700D.115 EOSM.203 EOSM2.103 M50.102