ColorChecker SG

[Bernalor]

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Hello everyone
I would like to create an ICC color profile similar to the Leica SL JPEG profile. I do not own a ColorChecker SG, someone who owns it could kindly put a photo to it.

Thanks a lot in advance, and sorry my bad English

Best regards and have a nice day
Loris

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[jrp]

I wouldn’t use a colour checker sg for this purpose as it’s too shiny and so will not generate good profiles. 

[jaapv]

I would say a bit of overkill for everyday use. A Colorchecker Passport is more than sufficient and far easier to carry with you to make proflies adapted to specific lighting situations.

[Bernalor]

JRP: Thanks for the advice, other people instead recommended the SG. If I get a chance, I would still try.

JAAPV: Thank you for the proposal. I already tried with the Passport but the result was not satisfactory for me. The SG would use it once to have the color profile and then I would not use it anymore (I do not want to use it to create the profile from time to time). For this I wanted to ask if someone could provide a JPEG in-camera photo of a SG made with the SL. I wouldn't use it for other purposes and it would be pointless to buy it just for that.

 

Thanks again to all

[CharlesL]

How will you generate a profile from a camera JPG? Adobe DNG Editor, for example, requires a DNG of a ColorChecker shot in order to generate a .dcp profile.

And what is the purpose of emulating the work that the firmware in the camera does to make a JPG (which may be sRGB or Adobe RGB; you did not specify)? Raw development programs do a good job of starting from an image close to the camera JPG. At least, Silkypix does, and I read that Lightroom does.

 

[Bernalor]

Hello CharlesL
I do not know technically how it will be done. A technician will do it for me, but does not possess a Leica SL with which to take the photo... And I live pretty far to meet. For this I tried to inquire here on the forum, this would solve many problems. The file that will be created is an ICC.

I use Capture One to develop RAW. Personally the basic color profiles in the software are generally bad, I did make already better profiles that I use already, with satisfaction, on Capture One.

When I do not need a precise color matching, I'd like to start with DNG development already from how I preview on the SL, so as not to start developing with a file not similar to the preview while shooting. Sometimes it simplifies the work. Also the machine profile I find is already a good profile-not perfect but good.

Usually AdobeRGB, other information (contrast, saturation, etc.) I indicate later. I don't have with me my camera with the various information

Thank you
Loris

[jaapv]

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On 6/5/2019 at 11:05 AM, Bernalor said:

JRP: Thanks for the advice, other people instead recommended the SG. If I get a chance, I would still try.

JAAPV: Thank you for the proposal. I already tried with the Passport but the result was not satisfactory for me. The SG would use it once to have the color profile and then I would not use it anymore (I do not want to use it to create the profile from time to time). For this I wanted to ask if someone could provide a JPEG in-camera photo of a SG made with the SL. I wouldn't use it for other purposes and it would be pointless to buy it just for that.

 

Thanks again to all

But the whole point of a profile is to adapt the raw file from the camera to the software output. I would recommend that you read for instance: "Real World Color Management" by  Fraser and Bruce before you embark on attempts like this. Colour management is not just creating some profile, but it is a process from camera to print, and not simple. If you are not happy with a profile from an X-rite device there is something wrong in your workflow as a whole.

[biogon]

3 hours ago, jaapv said:

I would recommend that you read for instance: "Real World Color Management" by  Fraser and Bruce

The book authors are Bruce Fraser, Chris Murphy and Fred Bunting.

[jaapv]

You're 100% right Hasty typing

[Bernalor]

JAAPV:
I've heard about this book, very technical and complete. A point of reference for those who really want to deepen. Unfortunately I haven't read it yet.
I know the fact that it's not the right way. I already have other profiles that allow me to do more accurate work. I don't need to make a profile every time, I don't have that strong need.

This second profile-JPEG would be a whim, to be used sometime, definitely not when I try correct colors. When, for example, I have to touch up only some images or as a base for black and white (I find the jpeg of SL a good start for BW, but I want to start from DNG)
As already written, I have already tried with the Passport. A good result but the rendition of the dark areas and certain colors I do not like as instead makes on the JPG in-camera. I would like to have a more accurate profile.
As said is a whim, so I'm not going to spend that amount for the SG and then use it for a single photo.

I hope I'm well explained.

Biogon: Thanks for the clarification.