JaseUK
lvl.3
United Kingdom
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geofox784 Posted at 2017-4-25 06:31
A neutral density filter should not affect color. That's why it's called a NEUTRAL density filter. It just reduces the amount of light going into the sensor. To set white balance I would just change it to what "looks right" as you can always change it later. If you have an android phone this is a great app: https://play.google.com/store/apps/details?id=cassiopeia.camera&hl=en
It shouldn't as you say but it certainly can! Generally on the lower end NDs 4,8,16 etc then its unlikely but the manufacturing quality can make a difference. A color cast becomes more likely the higher the ND, you take a big stopper for instance that will amost certainly have a color cast.
Its all easy to correct in post anyway, what you don't want to do is use auto WB.
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