Mamiya 645

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Close-up Table for Extension Tubes and Auto Macro Spacer for 80mm f/4 Macro

The lenses shown are most suited for use with extension tubes.

Close-up Table for Extension Tubes and Auto Macro Spacer for 80mm f/4 Macro
Lens	ExtensionTube	Magnification		Subject Dist. (in.)		Area covered (in.)
		Min.	Max.	From	To	From	To
80mm f/2.8	No. 1	0.15	0.30	23.1	12.2	11.1 x 15.0	5.5 x 7.4
	No. 2	0.29	0.45	12.4	8.7	5.6 x 7.5	3.7 x 5.0
	No. 3-S	0.44	0.60	8.8	7.0	3.7 x 5.0	2.8 x 3.7
	No. 1+No. 3S	0.59	0.74	7.0	5.9	2.8 x 3.7	2.2 x 3.0
	No. 2+No. 3S	0.73	0.89	5.9	5.2	2.2 x 3.0	1.8 x 2.4
	No. 1+2+3S	0.88	1.04	5.2	4.7	1.9 x 2.5	1.6 x 2.1
80mm f/1.9	No. 1	0.15	0.30	22.4	11.6	11.1 x 15.0	5.5 x 7.2
	No. 2	0.29	0.44	11.7	8.1	5.6 x 7.5	3.7 x 5.0
	No. 3-S	0.44	0.59	8.1	6.3	3.7 x 5.0	2.8 x 3.7
	No. 1+No. 3S	0.59	0.74	6.3	5.2	2.8 x 3.7	2.2 x 3.0
	No. 2+No. 3S	0.74	0.89	5.2	4.5	2.2 x 3.0	1.9 x 2.5
	No. 1+2+3S	0.88	1.03	4.5	4.0	1.9 x 2.5	1.6 x 2.1
55mm f/2.8	No. 1	0.27	0.36	10.4	6.3	7.7 x 10.4	4.6 x 6.2
	No. 2	0.43	0.57	5.3	4.0	3.8 x 5.2	2.9 x 3.9
	No. 3-S*	0.54	0.78	3.6	3.0	2.6 x 3.4	2.1 x 2.8
	No. 1+No. 3S*	0.85	0.99	2.7	2.4	1.9 x 2.6	1.6 x 2.2
	No. 2+No. 3S*	1.07	1.21	2.2	2.0	1.5 x 2.1	1.4 x 1.8
	No. 1+2+3S*	1.28	1.42	1.9	1.7	1.3 x 1.7	1.1 x 1.6
110mm f/2.8	No. 1	0.11	0.22	43.6	23.0	15.3 x 20.6	7.5 x 10.1
	No. 2	0.21	0.33	23.4	16.5	7.6 x 10.3	5.0 x 6.8
	No. 3-S*	0.32	0.43	16.7	13.2	5.1 x 6.9	3.8 x 5.1
	No. 1+No. 3S*	0.43	0.54	13.3	11.2	3.8 x 5.1	3.0 x 4.1
	No. 2+No. 3S*	0.54	0.65	11.3	9.9	3.0 x 4.1	2.5 x 3.4
	No. 1+2+3S*	0.64	0.75	9.9	8.9	2.5 x 3.4	2.2 x 2.9
150mm F/2.8 & f/3.5	No. 1	0.08	0.21	85.9	35.4	21.5 x 29.0	7.9 x 10.6
	No. 2	0.15	0.28	45.7	27.5	10.7 x 14.4	5.8 x 7.8
	No. 3-S*	0.23	0.36	32.6	22.9	7.1 x 9.6	4.5 x 6.1
	No. 1+No. 3S*	0.31	0.44	25.9	20.0	5.3 x 7.2	3.7 x 5.0
	No. 2+No. 3S*	0.38	0.51	21.9	17.9	4.3 x 5.8	3.2 x 4.3
	No. 1+2+3S*	0.46	0.59	19.3	16.4	3.6 x 4.8	2.8 x 3.7
<80mm f/4.0 Macro	without Spacer	0.03	0.50	132.3	7.2	65.4 x 88.2	3.3 x 4.4
<80mm f/4.0 Macro	with Spacer	0.50	1.00	7.1	4.0	3.3 x 4.4	1.7 x 2.2

*Some vignetting may occur.