Zhumell RF645 manual Depth of Field

4. Other Features 4-6 Depth of Field

4-6 Depth of Field

Since the Bronica RF 645 is a coupled rangefinder camera compro- mising separate shooting and viewfinder optical systems, the sharp focus range is not directly displayed in the viewfinder. The depth of field must therefore be read from the depth of field scale on the lens, or calculated from the depth of field table.

1.To read the depth of field on the lens, focus on a subject, then read two distances on the distance scale between the pair of depth-of-field lines corresponding to the f-number set on the aperture ring. In the illustration, the 65mm lens is focused on a subject at 3 meters with its aperture set at f/8. The depth of filed range of approximately 2.5 to 4 meters is found between the pair of f/8 lines on the depth of field scale. The subjects within these two distances will be photographed in sharp focus. On the depth of field table of the 65mm lens, the box located where the horizontal line for 3 meters and the vertical column for the f/8 intersect includes the distance range corre sponding to the depth of field of 2.52 to 3.71 meters.

Note: The depth of field tables for lenses other than the 65mm lens is printed on the instruction manual of each lens.

	Distance(m)	F4	F5.6	F8	F11	F16	F22	F32
	1.0	0.96 - 1.04	0.95 - 1.06	0.92 - 1.09	0.90 - 1.13	0.86 - 1.20	0.82 - 1.30	0.75 - 1.52
	1.2	1.14 - 1.27	1.12 - 1.29	1.09 - 1.34	1.05 - 1.40	1.00 - 1.52	0.94 - 1.69	0.85 - 2.08
	1.5	1.41 - 1.61	1.37 - 1.66	1.32 - 1.73	1.27 - 1.84	1.19 - 2.06	1.10 - 2.40	0.98 - 3.33
	2	1.83 - 2.21	1.77 - 2.30	1.69 - 2.46	1.60 - 2.69	1.46 - 3.20	1.33 - 4.15	1.16 - 8.28
	3	2.62 - 3.50	2.50 - 3.76	2.33 - 4.22	2.16 - 4.98	1.91 - 7.16	1.69 - 15.2	1.41 - oo
	5	4.01 - 6.63	3.73 - 7.63	3.36 - 9.88	3.00 - 15.7	2.54 - 722	2.15 - oo	1.71 - oo
	10	6.67 - 20.1	5.89 - 33.7	5.01 - oo	4.23 - oo	3.36 - oo	2.70 - oo	2.04 - oo
	oo	19.0 - oo	13.7 - oo	9.69 - oo	7.10 - oo	4.92 - oo	3.60 - oo	2.50 - oo
65mm
	Distance (ft)	F4	F5.6	F8	F11	F16	F22	F32
	3.5	3.35 - 3.67	3.29 - 3.74	3.21 - 3.85	3.12 - 4.00	2.97 - 4.28	2.81 - 4.68	2.59 - 5.54
	4	3.80 - 4.22	3.73 - 4.32	3.62 - 4.48	3.50 - 4.69	3.31 - 5.09	3.11 - 5.67	2.83 - 7.04
	5	4.68 - 5.37	4.57 - 5.53	4.40 - 5.80	4.21 - 6.17	3.94 - 6.91	3.65 - 8.09	3.26 - 11.4
	7	6.37 - 7.78	6.15 - 8.14	5.85 - 8.75	5.51 - 9.66	5.03 - 11.7	4.55 - 15.8	3.94 - 37.7
	10	8.73 - 11.7	8.31 - 12.6	7.75 - 14.2	7.15 - 16.8	6.34 - 24.4	5.59 - 54.4	4.67 - oo
	15	12.3 - 19.3	11.4 - 21.9	10.4 - 27.3	9.32 - 39.5	7.96 - 158	6.79 - oo	5.46 - oo
	30	20.6 - 55.3	18.3 - 83.8	15.7 - 369	13.4 - oo	10.7 - oo	8.65 - oo	6.57 - oo
	oo	63.4 - oo	45.6 - oo	32.1 - oo	23.4 - oo	16.2 - oo	11.9 - oo	8.22 - oo

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