I recently shot my longest-yet exposure on Velvia 50 on a sunny afternoon - but in deep shade under forest canopy. Photo is of small plants taken at f/45 and 20 seconds. Plants came up green alright but there is an overall nasty blue cast to the film.
After searching this and other forums, I was reminded about reciprocity failture, and learned that Veliva supposedly shifts to green, not blue. So my question is: how much of this color shift is due to the deep shade versus reciprocity failure; or was I knee deep in both problems? Aside from waiting for better light or using a flash, would the solution have been a magenta color correction filter for reciprocity failure or a yellow warming filter? Have neither filter at present, so I cannot run tests anytime soon; but your helpful comments appreciated.
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