Nikon 2177, 1987 user manual Focused distance Depth of field Reproduction ratio

152		Depth of field									(ft.)
			Focused distance			Depth of field			Reproduction ratio
			f/2.8*	f/4*	f/5.6*	I	f/11*	f/16*	f/22*	I
	(7.29in. )		7-5/16 in.	7-5/16 in.	7-5/16 in.	7-5/16 in.	7-5/16 in.	7-5/16 in.	7-4/16 in.	7-4/16 in.
			—	—	—	—	—	—	—	—	1/1.0
			7-5/16 in.	7-5/16 in.	7-5/16 in.	7-5/16 in.	7-5/16 in.	7-5/16 in.	7-5/16 in.	7-5/16 in.
	8 in.		8 in. — 8 in.	8 in. — 8 in.	8 in. — 8 in.	8 in. — 8 in.	8 in. — 8 in.	7-15/16 in.	7-15/16 in.	7-15/16 in.	1/1.36
								—	—	—
								8-1/16 in.	8-1/16 in.	8-1/16 in.
	9 in.		9 in. — 9 in.	9 in. — 9 in.	9 in. — 9 in.	8-15/16 in.	8-15/16 in.	8-15/16 in.	8-14/16 in.	8-14/16 in.	1/1.82
						—	—	—	—	—
						9-1/16 in.	9-1/16 in.	9-1/16 in.	9-2/16 in.	9-3/16 in.
	10 in.		10 in. — 10 in.	10 in. — 10 in.	9-15/16 in.	9-15/16 in.	9-15/16 in.	9-14/16 in.	9-13/16 in.	9-12/16 in.	1/2.27
					—	—	—	—	—	—
					10-1/16 in.	10-1/16 in.	10-1/16 in.	10-2/16 in.	10-3/16 in.	10-4/16 in.
	1		1 ft. — 1 ft.	1 ft. — 1 ft.	11-14/16 in.	11-14/16 in.	11-14/16 in.	11-12/16 in.	11-10/16 in.	11-8/16 in.	1/3.14
					—	—	—	—	—	—
					1 ft. 2/16 in.	1 ft. 2/16 in.	1 ft. 2/16 in.	1 ft. 4/16 in.	1 ft. 6/16 in.	1 ft. 8/16 in.
	1 1/4		1 ft. 2-14/16 in.	1 ft. 2-14/16 in.	1 ft. 2-14/16 in.	1 ft. 2-12/16 in.	1 ft. 2-10/16 in.	1 ft. 2-8/16 in.	1 ft. 2-6/16 in.	1 ft. 2-3/16 in.	1/4.43
			—	—	—	—	—	—	—	—
			1 ft. 3-2/16 in.	1 ft. 3-2/16 in.	1 ft. 3-2/16 in.	1 ft. 3-4/16 in.	1 ft. 3-6/16 in.	1 ft. 3-8/16 in.	1 ft. 3-12/16 in.	1 ft. 4-1/16 in.
	2		1 ft. 11-12/16 in.	1 ft. 11-10/16 in.	1 ft. 11-6/16 in.	1 ft. 11-3/16 in.	1 ft. 10-15/16 in.	1 ft. 10-7/16 in.	1 ft. 9-15/16 in.	1 ft. 9-2/16 in.	1/8.27
			—	—	—	—	—	—	—	—
			2 ft. 6/16 in.	2 ft. 8/16 in.	2 ft. 10/16 in.	2 ft. 13/16 in.	2 ft. 1-3/16in.	2 ft. 1-15/16 in.	2 ft. 2-10/16 in.	2 ft. 4-3/16 in.
	3		2 ft. 11-3/16 in.	2 ft. 10-15/16 in.	2 ft. 10-7/16 in.	2 ft. 9 -13/16 in.	2 ft. 9-2/16 in.	2 ft. 8-1/16 in.	2 ft. 6-13/16 in.	2 ft. 5-1/16 in.	1/13.35
			—	—	—	—	—	—	—	—
			3 ft. 13/16 in.	3 ft. 1-3/16 in.	3 ft. 1-11/16 in.	3 ft. 2-8/16 in.	3 ft. 3-10/16 in.	3 ft. 5-6/16 in.	3 ft. 8-1/16 in.	4 ft. 1-7/16 in.
	7		6 ft. 3 in.	6 ft. 2/16 in.	5 ft. 8-4/16 in.	5 ft. 3-6/16 in.	4 ft. 10-1/16 in.	4 ft. 3-6/16 in.	3 ft. 9-4/16 in.	3 ft. 2-1/16 in.	1/33.65
			—	—	—	—	—	—	—	—
			7 ft. 11-10/16 in.	8 ft. 5-4/16 in.	9 ft. 2-8/16 in.	10 ft. 8-6/16 in.	13 ft. 5-10/16 in.	24 ft. 3-4/16 in.	෱	෱
		෱	124 ft. 8-9/16 in.	89 ft. 9-11/16 in.	64 ft. 1-15/16 in.	44 ft. 11-2/16 in.	32 ft. 8-4/16 in.	22 ft. 5-14/16 in.	16 ft. 4-7/16 in.	11 ft. 3-4/16 in.	1/෱
			෱	෱	෱	෱	෱	෱	෱	෱
			—	—	—	—	—	—	—	—

* The f-number on the ”Depth of field” chart is the value when the lens is set at ”infinity”.

• Due to the optical characteristics of this lens, as the lens is focused closer, the focal length decreases.