[APML] Blue response on astrophotos

[centaurus_a@virgilio.it]

Dear All,

I recently shot M20 with Fuji Provia 400F and I noticed something that I
can't explain. The red part of the nebula is standing nicely while the blue
part is barely visible. Can anyone explain me why? It is said that Fuji
provia as good colour balance, so why I get less response to blue than to
red?
Do you know a selective way to enhance the blue keeping the rest of the
shot correctly balanced?

Regards,
Nicola
http://astrofoto.laza.it

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