Camera Projection Problem

[JuriBryan]

Hi everyone,

So I am working on a destruction shot right now where the ground caves in.

The plan is to project the background image on the top side of the geo and use a procedural shader for the rest.

The problem is that some how the rendered projection looks nothing like the image... well it does but it is saturated/desaturated more gamma less gamma and I can't get it match perfectly with the background image.

I am using a constant shader with the image as a texture... that should actually be enough, right?

I changed the gamma on the image from 0.454 to 2.2 and 1... nothing helps.

Any idea what I am doing wrong?

Cheers,

Juri

[sanostol]

mh, srgb sources need a gamma of 0.454545, linear images must not be modified

mantra as any renderengine needs linear stuff to work with, but You viewer needs to apply a gamma of 2.2 so You see the correct image

[JuriBryan]

I do know that.

I correct the images for the correct colour space, but when I import the image into nuke it does not look like the original image.

I am not at home right now, but I will post a image tomorrow morning.

But to me it looks like there are some strange colour multiplications going on... no idea where they come from and what I could be missing.

Thanks for your help so far!

Juri

[sanostol]

might help if You also post a texture example

[JuriBryan]

HI,

so here is a test render with the back ground.

I tried to grade it to match the background but no matter what I do it just seams off.

(the image is not graded)

Here is also the file showing what I am doing with the texture I used.

Hope someone has a idea on what I am doing wrong.

Cheers,

Juri

rbd_01.hipnc