Color management problem - VFB looks different thyn saved image

Hi all,
got and issue that happens upon saving from VFB.

here is a sample image
left - VFB
right - saved PGN

i ve got both my monitor calibrated with SPYDER3 Elite hw
it has created profile for each monitor which is correctly being used for displaying the colors.

what i dont get is that VFB displays the rendered image differently than when you save it :-///
i ve tried using my monitor profile in PS but unfortunatelly it only shows profile of the the main monitor :-/ the other profile is not visible

any idea where are the profiles all saved to?
and
once succesfully located, how do i bring them to PS? :slight_smile:

or is the problem somewhere else?

Thanks for any clues!

Best

… you have the same problem with exr or jpeg ?

looks like a gamma issue… are you using max VFB or Vray VFB ?

you can try a simple thing : when saving, choose override gamma with 1.0 value (option in the save window)

you can load your colour profile into the vfb

tryharder: yep, the problem is the same when i save from VFB

Subburb: i use VFB…i need to be saving with gamma override 2.2 to maintain the worflow

DVP3D: did not know that…how do i set it up? is it in manual somewhere? (might have overlooked)

thanks guys

Unfortunately you need to assign the Spyder generated monitor profile to the render in photoshop.
Color management is a pain with computer generated images. It’s much easier with photos.

hi martin!

marc is right of course, when i view rendered images they always look off with programs like the built in windows image viewer. as he said, you have to open them in photoshop and assign the right monitor color profile to them, then they will look right again if you browse them… that is to say, exactly like in the framebuffer of vray/max. else windows will try to display/interpret them as srgb i think and that will be in my case very dull and flat and with a slight color shift (we use hardware calibrated wide gamut nec monitors). it´s a real pain in the a…

and what´s worst, windows image viewer will not use profiles if i switch it to fullscreen mode, then the colors will be off again. in my case with edited images with profile, oversaturated.

best regards,

christoph.

Only .exr will preserve the colors for me.

Thanks for all the inputs guys!!!
Appreciate your help…i guess i will have to live with the way it is…for PNGs i will have to reapply the monitor profile and for the EXRs i dont have to as they r fine as they are :slight_smile:
Its hard to swim in the color management waters really…and i dont even think about how it all looks on the client monitor :slight_smile:
Best Regards!

If I can hijack this… I do my photoshop on an other PC and use spyder 3 pro to calibrate my monitors. (dual monitors on my workstation and single on my PS machine)

I have calibrated them all indipendantly and the all view different. Should I apply the same profile to all 3 monitors?
I was tearing my hair out and just kind of gave up colour matching because of this.

is it the same monitors in terms of type/brand?

we render, open in photohop and apply our monitor color profile to the file, then make all the post production and save out via “save for web and devices” with both options “embed color profile” and “convert to srgb” ticked. that works quite well. if we do it not this way for some reason, we only give out files with our own color profile embedded, this works also quite well. but i guess you can´t do anything against architects using very cheap TN panel LCD monitors and uncalibrated awful printers and then telling you the images are strange… :wink:

best regards,

christoph.

@ Pixelbox_sro, sorry 2 of them are the same Dell Ultrasharps and the other is a slightly newer model Dell Ultrasharp on the PS station…

I work in an architects using one of those “cheap TN panel LCD monitors and uncalibrated awful printers”. It’s even worse when you work in house. :wink:

Thanks Christoph!!!

Greg:
its strange your getting very different results calibrating two same monitors.
Are you sure they r doth se to its defaults prior to the calibrating? (same color tone, RGB, brightness, contrast etc.?)

Yes both set back to defauts before callibration. Should i just be callibrating one monitor and apply the same profile to both?

Keep in mind that the VFB performs a sRGB display color correction, whereas PNG files store a gamma correction. There are minor, but obvious differences between the two, especially for relatively dark colors.

Best regards,
Vlado

It is also handy to have three types of monitors to check your images, a low-end TN panel, a mid-end PVA panel and a high-end IPS panel.