The problem is, that if a specific dye layer is underexposed, you won't be able to post-correct it. Deep
blue shadows need something like an 81C filter. Now here again, the Fauxtoshop crowd will state that
by merely futzing around a few evenings, they can correct something like this. No. They might be able
to tweak the balance or contrast, but underexposed blues and blue-inflected tones will not differentiate
because the base of the dye curves are starting to overlap. This actually occurs with other color neg films too, but is more noticable with Ektar because of the greater contrast and saturation, and because
the shadows aren't artificially warmed. Correctly exposed, and the cast of shadows is actually more
accurate than in most other films. It's just so much easier to spend fifteen seconds in the first place
to screw on a filter than to futz around for hours afterwards just for the bragging rights of how good
you are with fix-a-flat-tire programs.