Making Fog Using Depth Render Pass

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Ecuadorian
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Making Fog Using Depth Render Pass

Post by Ecuadorian » Sat Sep 19, 2009 4:50 pm

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.


Make a regular render with any preset you like:
regular.jpg
regular.jpg (55.15 KiB) Viewed 6597 times
Make a Depth Render (Express > Advanced) and play with the gamma setting. Here I used gamma 0.1:
depth-gamma0.1.jpg
depth-gamma0.1.jpg (16.71 KiB) Viewed 6592 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
blended.jpg (50.94 KiB) Viewed 6519 times
Model from 3D warehouse:
http://sketchup.google.com/3dwarehouse/ ... evstart=36

Fletch
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Re: Making Fog Using Depth Render Pass

Post by Fletch » Fri Sep 25, 2009 10:40 am

Another great thread on doing Fog in Post Pro using different techniques, of course by the famous "Rafa" at Kerkythea.net.
There's even one about doing "Steam" in post production (post-pro).
There's even one about doing "Haze" in post production (post-pro).

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