Of the remaining unidentified credited actors I have some identified, but don't see much in the way of matches.
Alberto Solá I've tried to identify previously with no luck, and tried again today with the same result.
José María Labernié we have a topic for so I know him pretty well, but I don't see anyone who seems at all like him.
Similarly I don't see any possible matches for the actors here.
Manuel Aguilera
This guy possibly?
Valeriano Andrés
Antonio Ferrandis - listed as appearing uncredited by both IMDb and EdCE. I know him well, but don't see him anywhere.
Ramiro Benito - based on a role listed by IMDb this might be him, but I wasn't able to identify him in anything else, so not at all sure.
Antonio Soto - I didn't manage to identify him in any roles, but a google search brought up this image of a photo for sale on a marketplace website. Since he is otherwise unknown, but named and described as an actor in the listing then I assume there must be some sort of identifying documentation with the photo. It's a fairly unusual name, so I think it's probably safe to assume that this is the man we are after. Unfortunately it's not dated.
I'm thinking this could maybe be him as the other photographer. Since we have one photographer credited and this one has a more substantial role then I would certainly think this role would be credited too. Not much to go on, but better than nothing. Any opinions welcomed.