Another Kodachrome 25 attempt, this app is finicky like film, and barely adjustable, kinda like shooting with a Brownie...
If I want to have the model look like it was photographed in 1950, then a sepia look in B&W is a start, but it also needs some blurring and depth issues that we seem to be getting away from with focus stacking in modern times. For photos of models that I want to look realistic, color seems to do it the best, even if it is for a 1950s scene.