The other day I thought I'd try 'shooting a specific film', i.e., post-process all the shots from the day with one particular film emulation preset, Kodak Portra 160 in this case. But when I sat down to process my shots I wondered if it mattered if it was important to manually set the WB to 'daylight' since Portra 160 is a 'daylight' film.
I first set my shots to 5500 (~ daylight) and then ran the preset, the results were not what I would expect from Portra 160 in the same lighting. The shots were from my back yard with relatively afternoon cool lighting and I've shot actual Portra 160 in this same situation.
Is my assumption incorrect in that I should set the WB to 'daylight'? Do film emulation presets take some WB into account. In this case, I'm using the VSCO film emulation presets.
Luckily I shot some Portra 160 and some digital shots of the same scene a while back, here are the results:
As you can see, setting the WB to Daylight resulted in a cooler photograph than if I set it to Auto compared to actual Portra 160.