A new version of Cineversity has been launched. This legacy site and its tutorials will remain accessible for a limited transition period

Visit the New Cineversity
   
 
Color Picker in the Picture Viewer?
Posted: 05 August 2019 11:09 PM   [ Ignore ]  
Total Posts:  292
Joined  2017-09-24

Hi,

Is there a way I can color pick an image in the picture viewer (PV) much the same with the Vray Frame Buffer? Currently, I save the file. Open it in Photoshop and color pick from there.

I need to color pick to troubleshoot some values (i.e. pixels exceeding a value of 1).

Is this possible?

Thank you for looking at my problem.

 Signature 

C4D Body Mechanics Rigs (Gumroad)  //    Website

Profile
 
 
Posted: 06 August 2019 12:51 AM   [ Ignore ]   [ # 1 ]  
Administrator
Avatar
Total Posts:  12043
Joined  2011-03-04

Hi Bentraje,

If you hold down CTRL or CMD while the Mouse indicator is over the image in the Picture Viewer, you will see the values of the current pixel in the lower bar of the Picture Viewer.

Would that be enough information?

ScreenShot
https://www.amazon.com/clouddrive/share/dr19ZvNLtZI5WHvqWHe1F5GcZAqw6IsTWyRDTRiDi2E

An A/B difference in the Picture Viewer of an 8bit and 32bit show these hot pixels in a good way. The 0-100 will be dimmed (gamma linear difference), but anything significantly over 100% will show up white.

Cheers

 Signature 

Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
Maxon Master Trainer, VES, DCS

Photography For C4D Artists: 200 Free Tutorials.
https://www.youtube.com/user/DrSassiLA/playlists

NEW:

NEW: Cineversity [CV4]

Profile
 
 
Posted: 06 August 2019 01:00 AM   [ Ignore ]   [ # 2 ]  
Total Posts:  292
Joined  2017-09-24

@Dr Sassi.

Thanks for the response. The CTRL modifier works as expected.

Although can you expand on the “An A/B difference in the Picture Viewer of an 8bit and 32bit show these hot pixels in a good way” statement?
The reason I am asking is even though I render 8 bit depth (in the Render settings), the bottom figure always say 32 bit.

Is there a way around this? Thank you

 Signature 

C4D Body Mechanics Rigs (Gumroad)  //    Website

Profile
 
 
Posted: 06 August 2019 02:31 AM   [ Ignore ]   [ # 3 ]  
Administrator
Avatar
Total Posts:  12043
Joined  2011-03-04

Hi Ben,

Internally the engine renders in 32bit/float. Anything less is a conversion and loos in quality.

I’m baffled that you get anything above that in an 8bit/channel format, can I send you an upload link?

The A/B comparison works best if both analyses render are done in linear, have a look here:
https://www.amazon.com/clouddrive/share/IhrutBbg1ECoaF9bjzSMBRUmvUeaDnxx8icei0goNeT
Since you like to have small demo captures, I have stored it in the way I saved my first 400 tutorials 15 years ago, which I really regret to have done so. I hope you appreciate the effort.

All the best

 Signature 

Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
Maxon Master Trainer, VES, DCS

Photography For C4D Artists: 200 Free Tutorials.
https://www.youtube.com/user/DrSassiLA/playlists

NEW:

NEW: Cineversity [CV4]

Profile
 
 
Posted: 06 August 2019 10:56 PM   [ Ignore ]   [ # 4 ]  
Total Posts:  292
Joined  2017-09-24

@Dr. Sassi

Thank you for the thorough demonstration, especially for the LQ version. It works as expected!

Have a great day ahead!

 Signature 

C4D Body Mechanics Rigs (Gumroad)  //    Website

Profile
 
 
Posted: 06 August 2019 11:34 PM   [ Ignore ]   [ # 5 ]  
Administrator
Avatar
Total Posts:  12043
Joined  2011-03-04

You’re very welcome, Ben, thanks for the reply.

I know that you understand that I used linear for the integer format to get comparable data, for anyone reading along, this is for analytic purposes only.

Have a great day

 Signature 

Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
Maxon Master Trainer, VES, DCS

Photography For C4D Artists: 200 Free Tutorials.
https://www.youtube.com/user/DrSassiLA/playlists

NEW:

NEW: Cineversity [CV4]

Profile