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Author Topic: Focal blur  (Read 3051 times)

Tof

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Focal blur
« on: October 31, 2009, 08:55:32 am »

Hello,
I'd like to try to add DOF to some of my projects (using depht channel).
Is there a free software to do this? (I actually use Artweaver 1.0 for UV MAps and after effects but I think it cannot do that :'().
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odp04y

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Re: Focal blur
« Reply #1 on: October 31, 2009, 02:11:25 pm »

There's no way to do it in Anim8or, but you could probably do it in an art program by merging two pictures together. You'd have to experiment.
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$imon

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Re: Focal blur
« Reply #2 on: October 31, 2009, 04:03:08 pm »

the option in photoshop is called 'lens blur' , maybe you can look for that in other programs.

Otherwise you can fake it a bit by going in artweaver - select by color - choose completely black or white (whereever you want blur) and use a gaussian blur on that selection. You might want to do it different times so that there is more blur towards the back.
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kreator

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Re: Focal blur
« Reply #3 on: October 31, 2009, 06:52:05 pm »

bit of googling rsults in this .... http://www.anim8or.com/tutorials/from_users/focal_blur/focalblur_1.html

I think there was a program to do it as well, my brain is getting tired now..
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odp04y

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Re: Focal blur
« Reply #4 on: October 31, 2009, 08:26:50 pm »

Nice I'd never seen that before, might try that myself.
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$imon

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Re: Focal blur
« Reply #5 on: October 31, 2009, 09:18:39 pm »

kreator: that tutorial does show how to make a depth map in anim8or, but the method of applying the blur is a bit old. In photoshop the Lens Blur tool makes it a lot easier:

http://www.creativepro.com/article/photoshop-how-to-lens-blur-with-alpha-channels

But I don't think there are any free programs to do this with.. maybe you can download a trial version or something of photoshop, I'm not familiar with that.
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floyd86

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Re: Focal blur
« Reply #6 on: November 02, 2009, 12:12:30 pm »

There is a easy way to create focal or depth of field blur. Render along with your beauty render a depth channel. Play a bit with the z-near and z-depth (1-1000 most of the time works) so that you get a clear black and white image of your scene. Now open photoshop and import your beauty and depth channel renders. Then place the depth channel as a mask for the beauty render. Then use lens blur on the mask.

Tof

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Re: Focal blur
« Reply #7 on: November 04, 2009, 09:29:26 pm »

Thank you for the Tricks, I think you help me to find a method to get something like focal Blur with Artweaver!!
I'll be happy if a 3d champion can take a look to the way I try and say me if it seems OK or not. (If yes, this can be a good new for those who cannot buy photoshop, like me...)
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