I've vignetted my 19" Red Dot Artar on the 8 x 10 with full front rise and some tilt to both standards. I don't think a 12" Artar would cover 8 x 10 at all well as the angle of coverage is < 50 degrees. You certainly wouldn't get any movements. If you have a 5 x 7 reducing back, though, or a 4 x 5 with enough bellows draw, snap it up. My Artar is my most cherished lens. I have the Artar, a Dagor, a Nikkor, two Rodenstocks and 4 Zeiss lenses for my Hasselblad. The Artar is superior to all the others in every way.