Why bother changing base ISO?

Started Jul 18, 2007 | Discussions thread
Raul Veteran Member • Posts: 8,421
Amazing

Julia Borg wrote:

the thing I've never understood
about using filters with digital like this is that the blue filter
cuts down the transmission of other (i.e., red) wavelengths,

look at it from a different perspective. shooting under incandescent
light you often have attenuation of red channel to achieve the white
balance. so using cyan filter which affects only red channel and
allows for better exposure of green and blue channels makes certain
sense.

Anyone buying blue filters (and a color temp meter) ?

regards
raul

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