linear workflow with plates

[X14Halo]

So here is my understanding of linear workflow...please correct me if I am wrong.
Under color mapping, change gamma to 2.2, check on "don't affect colors" and then view the rendered image in the vray viewport with SRGB turned on.
My question is...when I have to bring in an image plane and match to a backplate, do I need to gamma correct the backplate to view it correctly behind my CG stuff? What is the correct way of doing this matching to plate workflow?

[MoonDoggie]

A simple test will give you the correct answer . It'll be very easy to see if it's not correct, ie. the image will appear very washed out.

I don't know Maya very well, but in max there's a global override to bring in bitmaps as 2.2 gamma. If not, you'll have to correct your backplate and tell the bitmap to use 2.2 in the gamma.

[Metzger]

Yep. If you are using an 8bit image like tif or tga for your image plane, you select the image plane add the bitmap gamma input and render with the srgb viewer lut on. Also, make sure you set your colorspace to linear multiply with a gamma 2.2. If you leave it at 1, your render times will be longer because it will be sampling for noise in the wrong colorspace.


Also, not sure if image planes in 2.0 beta are still broken, but you can take a camera projection node and override your background environment in V-Ray by plugging in that Projection node with the plate to it.

[BadRobotProductions]

image planes are still broken in RT, work in regular.

[t.petrov]

Image planes will be fixed in RT in the next beta.

[Metzger]

That's great news!