Typically 250 off 135 (kchrome 25) frames, at 6 foot
Some people asked for rejects they normally printed ok - - metering off brides nose with dome incident reliable.
Computer flash bounced off ceiling indoors.
Brides liked their dress highlights burnt, 'the slides are optimised for projection with high wattage on bead screen, but a printer could make them lighter, ...' was the answer, I normally handed over the rejects as well.
I normally demonstrated them on king sized white cotton sheets staple gunned to wall - ceiling to floorboards with 5cm projector lens, ie big like in cine theatre.
Single coated lenses with deep hoods, even in 90s for pastel and flare. Kchrom25 was nice.