Thomas de Groot schrieb:
> I have said it earlier in these ng's: I am not really enthousiastic about 
> focal blur in general, whether in ray tracing or (more especially) in 
> photography. I still think one should use it very carefully and with a very 
> light touch indeed.

I do agree with Mike that it is a very good (and important!) vehicle to 
give a sense of scale. Especially when trying to convey that something 
is particularly /small/, it does wonders.

Look at these shots for instance:

http://en.wikipedia.org/wiki/Tilt-shift_miniature_faking


On the other hand this of course implies that with shots indended to 
convey large scale, focal blur should be used sparingly indeed.

Still, I really don't like shots /without/ any focal blur. Aside from 
giving a sense of scale, it also gives a sense of depth, and helps add 
emphasis to some elements of the image (by literally putting them in 
focus), so you lose a lot if you don't use at least some subtle focal blur.

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