I am very confused about the way that PL4 and Color Efex Pro render luminance values.
Before exporting a TIFF image to Color Efex Pro, I always ensure that there are no clipped highlights or shadows.
When working in Color Efex Pro, even though I am very careful to ensure that there are there are no blown highlights or shadows in my TIFF images, I find that when I save the image and return to PL4 there are blown highlight and/or shadows, sometimes huge amounts.
In Color Efex Pro, I always have the “Show Clipped Highlights”/“Show Clipped Shadows” checked, so the blown values are easy to spot in CEP. When I am looking at the processed TIFFs in PL4, I always make sure that I am looking at the “No Correction” preset. So, it seems to me that PL4 should be giving me the very same image I just finished processing in CEP.
What am I missing?