Alexis Powell
Natural history enthusiast
...I have to say I never perceive a bino that is strong in the red, or strong in the blue or strong in the yellow-green as having a view that is tinted all the way across, has a 'colour-cast', with those colours. For example snow and sands that look pure white to my naked eyes look the same through Leicas, Zeisses or Swaros. But what is real to me might not be real to another observer...
I can almost say the same for today's premium quality, nearly neutral color rendering bins, but definitely not some older models. For example, pre-swarobright Swarovski models have a distinctly yellowish color when first brought to the eyes, and my B&L Elite (waterproof) paint everything with an orange wash. By contrast, my old Zeiss 7x42 BGATP is close enough to neutral that I adjust my eye/brain white balance so quickly that I don't notice deviations without looking for them.
--AP