IXUS 1000 HS Porting Thread - page 41 - DryOS Development - CHDK Forum

IXUS 1000 HS Porting Thread

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Re: IXUS 1000 HS Porting Thread
« Reply #400 on: 30 / November / 2015, 10:15:01 »
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Yeah, that's what most people using newer cameras usually get. May depend on the kind of the monitor you're shooting. There are some words of advice on the wiki page too (using the brightness slider, etc.).

You're saying that
you're getting green-looking raw in the software you're using (Photoshop).
The DNG you uploaded earlier appears relatively fine for me when opened in Irfanview or Raw Therapee. Could it be that Apple Adobe products parse the DNG metadata differently?

Can you upload a screenshot that shows the difference between the camera JPEG and the uncorrected DNG as it shows in Photoshop?

For DNGs converted by DNG4PS-2, I can confirm that the color matrix data from my profile does produce a good looking image while the current CHDK color matrix produces an image with strong green cast. These converted DNGs however lack the white balance data that is recorded in CHDK DNGs.

Note that the ixus1000 CHDK color matrix has relatively recently been changed. I have no idea if it is supposed be correct.

edit:
it's the other 'A' company
really thank you for your reply  :D
this is my screenshot .

EDIT: i think i will try to update the CHDK tmr and take more shots to confirm .
« Last Edit: 30 / November / 2015, 10:19:39 by ojy_97 »

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Offline srsa_4c

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Re: IXUS 1000 HS Porting Thread
« Reply #401 on: 01 / December / 2015, 13:05:58 »
I have attached a build that uses the color matrix included in the ixus1000 profile I uploaded earlier, in case you'd like to give it a try. As a reminder: that matrix comes from a random model, as is.
Try shooting under different lighting conditions (in sunshine, indoors, with artificial lighting, ...) and see if you get better default color for DNGs in Photoshop.

edit: here's the source diff
Code: [Select]
Index: platform/ixus1000_sd4500/platform_camera.h
===================================================================
--- platform/ixus1000_sd4500/platform_camera.h (revision 4307)
+++ platform/ixus1000_sd4500/platform_camera.h (working copy)
@@ -60,9 +60,9 @@
     #define cam_CFAPattern                  0x01020001 // Green Red Blue Green (http://chdk.setepontos.com/index.php?board=29.0)
 
    #define CAM_COLORMATRIX1                     \
-      12194, 10000, -3534, 10000, -1846, 10000, \
-       -117, 10000,  5518, 10000,   374, 10000, \
-        997, 10000,  1261, 10000,  3258, 10000
+      13124, 10000, -5329, 10000, -1390, 10000, \
+      -3602, 10000, 11658, 10000,  1944, 10000, \
+      -1612, 10000,  2863, 10000,  4885, 10000
 
     #define cam_CalibrationIlluminant1      1        // Daylight
 

Re: IXUS 1000 HS Porting Thread
« Reply #402 on: 04 / December / 2015, 00:31:14 »
I have attached a build that uses the color matrix included in the ixus1000 profile I uploaded earlier, in case you'd like to give it a try. As a reminder: that matrix comes from a random model, as is.
Try shooting under different lighting conditions (in sunshine, indoors, with artificial lighting, ...) and see if you get better default color for DNGs in Photoshop.
edit: here's the source diff

This color matrix is very much nicer than the default one.
The DNGs in Photoshop seems to be accurate  :D
Attached Screenshot of my test shot below

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Offline srsa_4c

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Re: IXUS 1000 HS Porting Thread
« Reply #403 on: 04 / December / 2015, 16:27:39 »
This color matrix is very much nicer than the default one.
The DNGs in Photoshop seems to be accurate  :D
Attached Screenshot of my test shot below
It does look convincing to me, but I'm not an expert in this area.
I'm tempted to check in this change. There's one thing that worries me though: this contribution (where the current matrix comes from). No "proof" or any details were provided there, so I don't know what to think.

If anyone else has some thoughts on this, I'm happy to hear them.


Re: IXUS 1000 HS Porting Thread
« Reply #404 on: 18 / December / 2015, 23:07:38 »
last week i bring my IXUS 1000HS With chdk to travel, It seems better than the default firmware as we can have more control.

But some of the RAW files have this kind of problem

White colour become red (with increased exposure and highlight )

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Offline reyalp

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Re: IXUS 1000 HS Porting Thread
« Reply #405 on: 19 / December / 2015, 00:13:29 »
White colour become red (with increased exposure and highlight )
That looks very red, are you certain it isn't just the program warning you that it's over exposed?
Don't forget what the H stands for.

Re: IXUS 1000 HS Porting Thread
« Reply #406 on: 19 / December / 2015, 01:22:01 »
White colour become red (with increased exposure and highlight )
That looks very red, are you certain it isn't just the program warning you that it's over exposed?

I dont think is the Adobe Raw / Photoshop warning
night scene also same, refer image below

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Offline philmoz

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Re: IXUS 1000 HS Porting Thread
« Reply #407 on: 19 / December / 2015, 01:32:17 »
White colour become red (with increased exposure and highlight )
That looks very red, are you certain it isn't just the program warning you that it's over exposed?

I dont think is the Adobe Raw / Photoshop warning
night scene also same, refer image below

The highlight clipping warning is turned on in both of the screenshots - small button at the top right of the histogram. Press the O key to toggle on/off (U toggles the underexposure warning).

Phil.
CHDK ports:
  sx30is (1.00c, 1.00h, 1.00l, 1.00n & 1.00p)
  g12 (1.00c, 1.00e, 1.00f & 1.00g)
  sx130is (1.01d & 1.01f)
  ixus310hs (1.00a & 1.01a)
  sx40hs (1.00d, 1.00g & 1.00i)
  g1x (1.00e, 1.00f & 1.00g)
  g5x (1.00c, 1.01a, 1.01b)
  g7x2 (1.01a, 1.01b, 1.10b)


Re: IXUS 1000 HS Porting Thread
« Reply #408 on: 19 / December / 2015, 01:35:37 »

The highlight clipping warning is turned on in both of the screenshots - small button at the top right of the histogram. Press the O key to toggle on/off (U toggles the underexposure warning).

Phil.

Ok thanks.
sorry my mistake  :D

Re: IXUS 1000 HS Porting Thread
« Reply #409 on: 31 / December / 2015, 07:50:20 »
I have attached a build that uses the color matrix included in the ixus1000 profile I uploaded earlier, in case you'd like to give it a try. As a reminder: that matrix comes from a random model, as is.
Try shooting under different lighting conditions (in sunshine, indoors, with artificial lighting, ...) and see if you get better default color for DNGs in Photoshop.

edit: here's the source diff

Am i able to change the color matrix in the newer build by myself? or i need to recompile CHDK just to embed this color matrix?

thanks

 

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