Depth of Field Calculator.
APS 35mm 6x45cm 6x6cm 6x7cm 5x4inch 10x8inch			Negative Format.
8mm 10mm 12mm 15mm 17mm 20mm 21mm 24mm 25mm 28mm 35mm 40mm 45mm 50mm 70mm 75mm 80mm 85mm 90mm 100mm 110mm 120mm 135mm 150mm 200mm 210mm 300mm 350mm 400mm 500mm 600mm			Focal length.
Aperture.			Subject distance.
F 1 F 1.2 F 1.4 F 1.7 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
Metres		Feet
			Near limit  acceptable
			Far limit  acceptable
	Hyperfocal distance
		Total depth of field.