Plate size

Large Format Sizes :
4×5 inches (100x125mm)
5×7 inches (125x178mm)
8×10 inches (203x254mm)
11×14 inches (280x355mm)
12×16 inches (305x405mm)

19th-Century Image Plate Sizes:
Whole Plate: 6.5 x 8.5 inches (16.5 x 21.5 cm)
1/2- Half Plate: 4.25 x 5.5 inches (11 x 14 cm)
1/4 – Quarter Plate: 3.25 x 4.25 inches (8 x 11 cm)
1/6 – Sixth Plate: 2.75 x 3.25 inches (7 x 8 cm)
1/9 -Ninth Plate: 2 x 2.5 inches (5 x 6 cm)
1/16 – Sixteenth Plate: 1.375 x 1.625 inches (3.5 x 4 cm)