Field Depth Calculator Determine the field depth and amount that will be in focus in a photograph. Includes nearest and furthest points of focus, as well. Negative Format 35 mm APS 6x45 cm 6x6 cm 6x7 cm 5x4 inch 10x8 inch Lens focal length 17 mm 20 mm 24 mm 28 mm 35 mm 50 mm 70 mm 80 mm 100 mm 135 mm 150 mm 200 mm 210 mm 300 mm 350 mm 400 mm Selected aperture F 1.4 F 1.8 F 2 F 2.8 F 4 F 5.6 F 8 F 11 F 16 F 22 F 32 F 45 F 64 F 90 Subject distance (Meters) Hyperfocal distance for this lens/aperture combination. Near limit of acceptable sharpness. Far limit of acceptable sharpness. Total depth of field.