Projectors made for opaque materials, such as some of the Balopticon (bausch and lomb ad for this) or one sold by Zeiss around the same period, had large lenses that easily cover 8x10. Some are Petzval, some triplets, but all of them are cheap, of you can find them. Here's a shot (paper negative) taken with the big chrome and black B&L version from a 1917 Balopticon I got for free.ahman8x10web.jpg