I took one roll of Fujichrome Provia 100F and one roll of Kodak Ektachrome E100 and shot them in the same light with the same settings using the same camera.
Then the best frames from each roll was professionally scanned by drumscanning.co.uk. The supplied TIFF files were changed from 16 bit to 8 bit then saved as JPEG and then uploaded to Flickr. No colour corrections or other adjustments were made. Yes, I know I need to fix the light leak in the film back.
To my eye, I can’t tell any difference. There might be a bit more red in the Ektachrome but not something that would bother me or make me choose one film over the other.
I found it an interesting experiment anyway. Not many photographers, that I could find, have done a side by side comparison with these two films on a portrait shoot. I’ve managed to find landscape shoots but not portrait shoots. Which makes me wonder if I would have a different result if I had taken these pictures on a sunnier day.