Oh happy days. 36 frames to use in a miserly fashion. And then post them off for processing. I always used slides, first Agfa 64 then Fuji 400. Using a projector I could blow them up to eight feet by four feet on the whitewashed wall to bore the hell out of dinner guests.
Yes, yellow filter. I used Ilford Delta 100 b+w film. The filter however is now securely attached to the lens hood I used on another lens yesterday. So my task for today is to separate them.