GH1 adobeRGB and sRGB comparison

Simon Höfer

Simon Höfer

Veteran
Hey folks,
as mentioned in the GH1 - Tips and Tricks thread I made a comparison of adobeRGB and sRGB on the GH1.

You can change it in the PICTURE settings when you set the dial to M mode. Then switch back to Movie Mode and shoot some video.

It makes absolutely no sense that there is any difference in movie mode, but it definitely is different.

See for yourself in this video:
http://vimeo.com/14057831

 
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Yep, you get a flatter response with AdobeRGB. I've said this before and was called crazy. :)

It shouldn't function like this but it does, I like that flatter look especially in the reds.
 
Aha…so it is true. I was trying to find a way to test this last night at the advice of alighnment1.. Thanks Simon for that confirmation.

Maybe this could help with some of those bleeding red issues that some folks noticed.
 
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Isaac_Brody said:
Yep, you get a flatter response with AdobeRGB. I've said this before and was called crazy. :)

It shouldn't function like this but it does, I like that flatter look especially in the reds.
Click to expand...

This is interesting given the following line on page 123 of the GH-1 User's manual....

"The setting is fixed to [sRGB] in recording motion pictures."

The above test seems to indicate otherwise... so perhaps the 'engineers' allowed something that was not communicated to the manual writer...
 
j1clark@ucsd.edu said:
This is interesting given the following line on page 123 of the GH-1 User's manual....

"The setting is fixed to [sRGB] in recording motion pictures."

The above test seems to indicate otherwise... so perhaps the 'engineers' allowed something that was not communicated to the manual writer...
Click to expand...

Well, it is clearly a bug. It is a mistake by the engineers. It should be fixed to sRGB, because that is the right standard. The color space setting for a picture mode should not affect the video mode in any way.
 
The color cast you see in the rendered movie will depend on which color space is used to interpret the footage. If the camera is in fact switchable between sRGB and AdobeRGB in video mode, we should be able to verify that in Final Cut or Premiere/After Effects. Rendering with the same color space the video was recorded in should produce comparable results when displayed on a monitor set up to use that color space.
 
I know its crazy as well, but I use AdobeRGB, even with what the manual says, and the tripod mode OIS in video mode. Its in the manual that these functions should affect video mode, but I believe they do.
 
SRGB and Adobe RGB affects the video, obviously.

RGB = RAW and natural.
sRGB = Affected and unnatural.

Is not crazy to use RGB, and the camera should be preset in RGB mode, always. (To my mind)
It looks more natural, like my 5dMark II.

Just to sell more, Panasonic left the default camera in sRGB.
Looks more "rich", but exaggerated in color.
But they know very well that a careful user can set the camera to professional levels.
 
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Makes me wonder what else is under the hood that we might not know of?

Can someone tell me what’s the benefit (if any) of shooting in one or the other?
 
lpowell said:
The color cast you see in the rendered movie will depend on which color space is used to interpret the footage. If the camera is in fact switchable between sRGB and AdobeRGB in video mode, we should be able to verify that in Final Cut or Premiere/After Effects. Rendering with the same color space the video was recorded in should produce comparable results when displayed on a monitor set up to use that color space.
Click to expand...

Well, how to do this? Didn't find any way to set the color space in Premiere. And we also don't know what the camera is actually doing. It might be the adobeRGB color space, but it could also just be something different.

The problem however is, that on the one recording the reds are already clipping and there is no way you can bring this back by changing the colour space. So I am not sure what exactly is going on.

plasmasmp said:
I know its crazy as well, but I use AdobeRGB, even with what the manual says, and the tripod mode OIS in video mode. Its in the manual that these functions should affect video mode, but I believe they do.
Click to expand...

Well, it is no longer believing.

DrDave said:
Nice work Simon.
Click to expand...

Thanks!
 
After looking over Simon's example, I'll guess I'll try to shoot in "FauxDobe"--the colors look less amped. Hopefully, I'll get a bit more room to work in Post. One can always dial up the saturation later. I'm actually wondering if the Adobe setting is just flat.
 
nice Simon- good to see someone finally threw up an example--I'll have to dig through my footy, I did a comparison when we discussed this here:

http://dvxuser.com/V6/showthread.php?t=212482&highlight=sRGB+AdobeRGB

I'll have to throw it up- if I can find. Although your example shows a definite flatter response in color, I've got some CU footage of a picture frame with a reflection in it, and the results yielded a much more detailed image in the Adobe color space. very cool stuff.


hernan said:
Is not crazy to use RGB, and the camera should be preset in RGB mode, always. (To my mind)
It looks more natural, like my 5dMark II.
Click to expand...

it should be noted that- a canon rep at NAB this year said to use Adobe color space(on the 5d)....I'll have to find the thread that talked about it....
 
alignment1 said:
it should be noted that- a canon rep at NAB this year said to use Adobe color space(on the 5d)....I'll have to find the thread that talked about it....
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Ahh...I remember that. I believe there were some responses on here that kicked that idea to the curb. But there just might be a method to his madness.
 
I'd love to see some tets with skintones at sunny daytime... That would be more telling.

But just judging by the RGB parade is quite obvious that Adobe RGB is a lot more balanced.
 
Ian-T said:
Ahh...I remember that. I believe there were some responses on here that kicked that idea to the curb. But there just might be a method to his madness.
Click to expand...
as soon as I heard it, I tried it- shortly after, Essami started that thread-- I've been Adobe ever since.....still lookin for that footy:lipsrseal
 
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