Emil Busch Pantoscop

Early (1865) wide angle lens produced by Emil Busch. 100 degree coverage at F/22 aperture.

Models, image circle and recommended format:

No Diameter of lens element Focal length Recommended Format Image circle
1 8mm 60mm 6x9cm 115mm
2 13mm 90mm 11x15cm 185mm
3 18mm 140mm 18x24cm (8×10″) 300mm
4 27mm 185mm 24x30cm (10×12″) 385mm
5 39mm 245mm 30×40 (12×16″) 500mm
6 59mm 370mm 50x60cm (20×24″) 800mm
7 89mm 550mm 70x100cm 1200mm