This Amazon review seems to suggest that the built in ND filter adapter we've all been waiting for has a pretty bad color cast.
https://www.amazon.com/gp/customer-reviews/R2E8SJDQGSAHXI/
Granted, the reviewer doesn't seem to know about long exposure noise reduction, so he could just as well have the white balance set to something weird.
More broadly, I always thought that people shied away from variable ND filters because sometimes they put lines or other artifacts into the image. Wouldn't this be the case with the adapter?
https://www.amazon.com/gp/customer-reviews/R2E8SJDQGSAHXI/
Granted, the reviewer doesn't seem to know about long exposure noise reduction, so he could just as well have the white balance set to something weird.
More broadly, I always thought that people shied away from variable ND filters because sometimes they put lines or other artifacts into the image. Wouldn't this be the case with the adapter?