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Messages - Greg

Pages: [1] 2 3 ... 24
1
Modules Development / Re: Full-resolution silent pictures (silent.mo)
« on: January 16, 2021, 01:50:18 AM »
This can work on all cameras (as long as there is enough RAM on the cheaper ones), but requires some research.
If you average a large number of frames, you will limit the DR by a 14bit file.  ;)

2
Modules Development / Re: Full-resolution silent pictures (silent.mo)
« on: January 16, 2021, 01:01:24 AM »
Quote from: garry23 on January 15, 2021, 02:39:08 PM
@Grey

Yes I know I can do that and use normal approaches to construct bracket sets for processing in post, eg https://photography.grayheron.net/2021/01/music-additional-notes.html

My suggestion is to do this in camera, ie before outputting the FRSP image.

 ;)

My version doesn't have the delay between frames, create buffers before capturing.
Postprocess motion blur control is better. If you want to do it in camera and not wait a few minutes you have to use TWOADD (digic4) or EekoAddRawPath (digic5).
I've never had digic5 camera so I don't know how the Eeko works.

TWOADD low level frame subtraction - https://www.magiclantern.fm/forum/index.php?topic=13408.msg172108#msg172108
If you have an idea how to reconfigure to get adding frames, this should work.

3
Modules Development / Re: Full-resolution silent pictures (silent.mo)
« on: January 15, 2021, 02:34:49 PM »
@garry23,
FRSP continuous - https://www.magiclantern.fm/forum/index.php?topic=12523.msg156393#msg156393
reduce the time between frames - https://www.magiclantern.fm/forum/index.php?topic=12523.msg167874#msg167874
https://www.magiclantern.fm/forum/index.php?topic=17298.msg167452#msg167452  ;)

4
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: May 31, 2020, 05:24:58 PM »
Quote from: bhedrington on May 29, 2020, 11:45:32 PM
also be nice to be able to shoot 120p at 4k :)

We can get 8K@120FPS. It will work like 4K in M6II - M6II vs M50 4K ;D


5
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: May 26, 2020, 10:32:39 PM »
M50 1.0.3

6
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: May 24, 2020, 09:39:43 PM »
Quote from: names_are_hard on May 23, 2020, 07:46:29 PM
Is this based on the infamous "fishy" build?
I don't have the "fishy" build code. This is digic6-dumper branch and stubs, consts, button codes, several modifications (bmp_vram, disabled audio tasks etc).

You can load "fishy" autoexec.bin in IDA/ghidra, convert the file M50_101.sym to idc script to name the functions.

7
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: May 23, 2020, 06:01:34 PM »


8
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: May 05, 2020, 02:33:23 AM »
The M50 sensor is too slow to do this. You need 2x more data to read a dual pixel. So maybe at 10-15 FPS?
At the current stage of development, we should not think about such advanced features.

9
Modules Development / Re: Full-resolution silent pictures (silent.mo)
« on: May 03, 2020, 09:07:06 PM »
Yes, each camera has a different x sync calibration. You can change this value, but I don't know where (prop/eeprom).
Proposed name for the module "fake_hss.mo"  ;)

A few years ago I used arduino as a shutter button. Arduino sent a signal to the camera (shutter release connector) and then to the radio triggers.
This may be somewhat unstable. In some modes, the camera has a random delay.

Quote from: nikfreak on May 03, 2020, 07:16:49 PM
Was reading chdk's wiki last days and then shocked seeing they could do some kind of 1/60000 flash sync speed.
It's possible for a CCD sensor.

Quote from: nikfreak on May 03, 2020, 07:16:49 PM
this one I didn't understand.
A1ex knows how to change the aperture during FRSP exposure. If you know how to trigger a flash at the right time. You can try :
- Start FRSP @ F16
- set the aperture to F1.4
- trigger the flash
- set the aperture to F16

10
Modules Development / Re: Full-resolution silent pictures (silent.mo)
« on: May 03, 2020, 04:42:12 PM »
Quote from: nikfreak on May 03, 2020, 12:42:03 PM
Wanna achieve soemthing like this for cheap
https://www.spt.info/index.php/service-adjustment-software?id=26

You can try "leaf shutter" by changing the aperture value when capturing FRSP.

11
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: April 26, 2020, 11:36:55 PM »
I compiled this code in digic6-dumper branch. This is not ML, but 2 features with which the M50 is more useful.

12
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: April 26, 2020, 06:02:22 PM »
These few lines of code modify properties, unlock features that the M50 doesn't have in the Canon menu.

13
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: April 26, 2020, 05:04:03 PM »
M50 1.0.2 - manual silent shutter (M, Av, Tv, P) also works in continuous mode :

Code: [Select]
THUMB_FN(0xE053607E, GUI_SetSilentShutter)

#define SilentShutter_OFF           0x0
#define SilentShutter_ON            0x1

extern int GUI_SetSilentShutter(int);
GUI_SetSilentShutter(SilentShutter_ON);
30s - 1/4000s - OK
Bulb - ERR70

14
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: April 26, 2020, 02:06:58 PM »
M50 1.0.2 - 7 frames exposure bracketing



Code: [Select]
THUMB_FN(0xE04E05BE, GUI_SetCFnBktSheetsData)

#define BktSheets3                  0x3
#define BktSheets5                  0x5
#define BktSheets7                  0x7

extern int GUI_SetCFnBktSheetsData(int);
GUI_SetCFnBktSheetsData(BktSheets7);

15
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: April 22, 2020, 06:00:18 PM »

16
General Chat / Re: Rant: "Canon is Listening, Will Add 24p Video Back to Select Camera Models"
« on: October 10, 2019, 02:05:05 PM »
@ArcziPL - https://www.dpreview.com/forums/thread/4366448

17
General Chat / Re: Rant: "Canon is Listening, Will Add 24p Video Back to Select Camera Models"
« on: October 10, 2019, 02:26:43 AM »
So RP and M50 still have only automatic electronic shutter mode?
I thought these few lines of code were not a problem for them.

18
Camera-specific discussion / Re: Canon 90D
« on: September 02, 2019, 11:06:40 PM »
DR analysis based on a lossy compressed CR3 file is not a good idea - https://www.canonrumors.com/initial-testing-shows-canons-new-32-5mp-aps-c-sensor-improves-dynamic-range-over-predecessor/

19
Camera-specific discussion / Re: Canon 90D
« on: August 28, 2019, 05:45:23 PM »
DR isn't better compared to the previous generation of sensors  ???
 

20
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: August 16, 2019, 05:10:03 PM »
Quote from: dfort on August 16, 2019, 04:12:57 AM
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

21
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: August 07, 2019, 05:43:05 PM »
Quote from: 71m363nd3r on August 07, 2019, 12:03:02 AM
The EOS R too, just compared it.

EOS R (before/after)


Quote from: Sapporo on August 07, 2019, 02:48:47 PM
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?

22
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« on: August 06, 2019, 12:00:56 AM »
Banding correction 200D (M50 also has this problem) before/after :


dpreview

23
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« 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 - ???)
Quote from: c_joerg on August 04, 2019, 04:37:39 PM
The manual says that the data for continuous recordings are converted into 12 bits...
I didn't know about it.  :o

24
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« 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.

25
Camera-specific discussion / Re: DIGIC 8 'PowerShot' development (M50, SX70, SX740)
« 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.

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