Making fog?

[truevis]

Any pointers to the procedure for adding fog in post-production? http://www.sketchupartists.org/?page_id=65 has some interesting techniques but I didn't quite see the method I'm looking for.

From the manual:
Depth Render
Renders a greyscale image that assigns different values of grey for different distances from the camera. Useful for
post-production in a photo editing program when manually recreating a Depth Of Field effect, or complex masking,
fog effects, or other post-production tonemapping or highlighting techniques.

[Ecuadorian]

Make a regular render with any preset you like:

regular.jpg (55.15 KiB) Viewed 7006 times

Make a Depth Render (Express > Advanced) and play with the gamma setting. Here I used gamma 0.1:

depth-gamma0.1.jpg (16.71 KiB) Viewed 7005 times

Place the depth render over the regular one in your photo editor, switch the blend mode of top layer to "screen" and play with the layer opacity. Here it is with opacity 50%. Also try with other blend modes for different results.

blended.jpg (50.94 KiB) Viewed 7007 times

Model from 3D warehouse:
http://sketchup.google.com/3dwarehouse/ ... evstart=36

[Solo]

Miguel, you have been extremely helpful regarding materials, effects, workarounds, I say management needs to impose a title system and call you 'Prof', thanks for all your efforts, makes learning TL so much easier.

[Fletch]

Another great thread on doing Fog in Post Pro using different techniques, of course by the famous "Rafa" at Kerkythea.net.