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-   -   Special background blur help (http://www.photoshopchop.com/forum/showthread.php?t=15843)

franz 01-04-2006 07:35 PM

Special background blur help
 
Hi guys and girls,

Please take a good look of this two photos
http://i12.photobucket.com/albums/a2...c_140-1024.jpg http://i12.photobucket.com/albums/a2...ra-10-1600.jpg

So beautiful, aren't they?
But how the hell they can take a motion shot like that?
Chasing the porsches with helicopter and take photos of them?
my best bet is that they are photoshopped

My question is how to achieve a motion blur like that?
like the yellow carrera shot, the blur direction is different in all parts of the photo
looks like a few radial blur applied
and for duel shot, it motion blur along the curve of the road

what I want to do is to put a static road shot into motion
I tried 2 methods:

1. Transform the road close to a part of perfect circle, spin-radial blur and transform it back to original shape.
problem - way too hard to transform it correctly, even harder to transform it back

2. Dulplicate the layer (the image of the road) 50+ times, motion blur each layer with different angles, then mask out all useless blur on each layer.
problem - it is wayyy too time-consuming. my first trial used 5 degrees blur angle difference between each layer, but while I did the masking, the inner side of the corner (the road) almost impossible to blend each layer correctly, unless I use 1-2 degree difference between layers

If photoshop has a function to allow you to blur along a path, that would save my day
I just have no idea to work another way around
can someone give me some advice on this?
thanks in advance

Cheers


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