Univex SB-900 user manual F–20, Specifications, Guide number table with Auto FP High-SpeedSync

F

Tips on Speedlight care and reference information

Specifications

Guide number table (with Auto FP High-Speed Sync)

■Standard illumination pattern, at ISO 100; m/ft (in FX-format)

Flash							Zoom position (mm)
output		14mm		17	18	20	24	28	35	50	70	85	105	120	135	180	200
level	WP +	BA	WP
	BA
1/1	6/	7.4/	7.8/	10.1/	10.6/	11/	12.4/	13.8/	15.6/	18.4/	20.2/	21.6/	22.8/	23.4/	23.7/	24.8/	25.7/
	19.7	24.3	25.6	33.1	34.8	36.1	40.7	45.3	51.2	6.04	66.3	70.9	74.8	76.8	77.6	81.4	84.3
1/2	4.2/	5.2/	5.5/	7.1/	7.4/	7.7/	8.7/	9.7/	11/	13/	14.2/	15.2/	16.1/	16.5/	16.7/	17.5/	18.1/
	13.8	17.1	18.0	23.3	24.3	25.3	28.5	31.8	36.1	42.7	46.6	49.9	52.8	54.1	54.8	57.4	59.4
1/4	3/	3.7/	3.9/	5/	5.3/	5.5/	6.2/	6.9/	7.8/	9.2/	10.1/	10.8/	11.4/	11.7/	11.8/	12.4/	12.8/
	9.8	12.1	12.8	16.4	17.4	18.0	20.3	22.6	25.6	30.2	33.1	35.4	37.4	38.4	38.7	40.7	42.0
1/8	2.1/	2.6/	2.7/	3.5/	3.7/	3.8/	4.3/	4.8/	5.5/	6.5/	7.1/	7.6/	8/	8.2/	8.3/	8.7/	9/
	6.9	8.5	8.9	11.5	12.1	12.5	14.1	15.7	18.0	21.3	22.3	24.9	26.2	26.9	27.2	28.5	29.5
1/16	1.5/	1.8/	1.9/	2.5/	2.6/	2.7/	3.1/	3.4/	3.9/	4.6/	5/	5.4/	5.7/	5.8/	5.9/	6.2/	6.4/
	4.9	5.9	6.2	8.2	8.5	8.9	10.2	11.2	22.8	15.1	16.4	17.7	18.7	19.0	19.4	20.3	21.0
1/32	1/	1.3/	1.3/	1.7/	1.8/	1.9/	2.1/	2.4/	2.7/	3.2/	3.5/	3.8/	4/	4.1/	4.1/	4.3/	4.5/
	3.3	4.7	4.7	5.6	5.9	6.2	6.9	7.9	8.9	10.5	11.5	12.5	13.1	13.5	13.5	14.1	14.8
1/64	0.7/	0.9/	0.9/	1.2/	1.3/	1.3/	1.5/	1.7/	1.9/	2.3/	2.5/	2.7/	2.8/	2.9/	2.9/	3.1/	3.2/
	2.3	3.0	3.0	3.9	4.7	4.7	4.9	5.6	6.2	7.5	8.2	8.9	9.2	9.5	9.5	10.2	10.5
1/128	0.5/	0.6/	0.6/	0.8/	0.9/	0.9/	1/	1.2/	1.3/	1.6/	1.7/	1.9/	2/	2/	2/	2.1/	2.2/
	1.6	2.0	2.0	2.6	3.0	3.0	3.3	3.9	4.7	5.2	5.6	6.2	6.6	6.6	6.6	6.9	7.2

■Standard illumination pattern, at ISO 100; m/ft (in DX-format)

Flash									Zoom position (mm)
output		10mm			12	14	16	17	18	20	24	28	35	50	70	85	105	120	135	180	200
level	WP		BA	WP
	+BA
1/1	6/		7.4/	7.8/	10.5/	11.5/	12.4/	13.3/	13.8/	14.2/	15.6/	16.5/	18.4/	21.1/	22.7/	23.4/	24.1/	24.8/	25.7/	26/	26.2/
	19.7		24.3	25.6	34.4	37.7	40.7	43.6	45.3	46.6	51.2	54.1	6.04	69.2	74.5	76.8	79.1	81.4	84.3	85.3	86.0
1/2	4.2/		5.2/	5.5/	7.4/	8.1/	8.7/	9.4/	9.7/	10/	11/	11.6/	13/	14.9/	16/	16.5/	17/	17.5/	18.1/	18.3/	18.5/
	13.8		17.1	18.0	24.3	26.6	28.5	30.8	31.8	32.8	36.1	38.0	42.7	48.9	52.5	54.1	55.8	57.4	59.4	60.0	60.7
1/4	3/		3.7/	3.9/	5.2/	5.7/	6.2/	6.6/	6.9/	7.1/	7.8/	8.2/	9.2/	10.5/	11.3/	11.7/	12/	12.4/	12.8/	13/	13.1/
	9.8		12.1	12.8	17.1	18.7	20.3	21.7	22.6	23.3	25.6	26.9	30.2	34.4	37.1	38.4	39.3	40.7	42.0	42.7	43.0
1/8	2.1/		2.6/	2.7/	3.7/	4/	4.3/	4.7/	4.8/	5/	5.5/	5.8/	6.5/	7.4/	8/	8.2/	8.5/	8.7/	9/	9.1/	9.2/
	6.9		8.5	8.9	12.1	13.1	14.1	15.4	15.7	16.4	18.0	19.0	21.3	24.3	26.2	26.9	27.9	28.5	29.5	29.9	30.2
1/16	1.5/		1.8/	1.9/	2.6/	2.8/	3.1/	3.3/	3.4/	3.5/	3.9/	4.1/	4.6/	5.2/	5.6/	5.8/	6/	6.2/	6.4/	6.5/	6.5/
	4.9		5.9	6.2	8.5	9.2	10.2	10.8	11.2	11.5	22.8	13.5	15.1	17.1	18.8	19.0	19.7	20.3	21.0	21.3	21.3
1/32	1/		1.3/	1.3/	1.8/	2/	2.1/	2.3/	2.4/	2.5/	2.7/	2.9/	3.2/	3.7/	4/	4.1/	4.2/	4.3/	4.5/	4.5/	4.6/
	3.3		4.7	4.7	5.9	6.6	6.9	7.5	7.9	8.2	8.9	9.5	10.5	12.1	13.1	13.5	13.8	14.1	14.8	14.8	15.1
1/64	0.7/		0.9/	0.9/	1.3/	1.4/	1.5/	1.6/	1.7/	1.7/	1.9/	2/	2.3/	2.6/	2.8/	2.9/	3/	3.1/	3.2/	3.2/	3.2/
	2.3		3.0	3.0	4.7	4.6	4.9	5.2	5.6	5.6	6.2	6.6	7.5	8.5	9.2	9.5	9.8	10.2	10.5	10.5	10.5
1/128	0.5/		0.6/	0.6/	0.9/	1/	1/	1.1/	1.2/	1.2/	1.3/	1.4/	1.6/	1.8/	2/	2/	2.1/	2.1/	2.2/	2.2/	2.3/
	1.6		2.0	2.0	3.0	3.3	3.3	3.6	3.9	3.9	4.7	4.6	5.2	5.9	6.6	6.6	6.9	6.9	7.2	7.2	7.5

•Guide numbers in tables above are for when the SB-900 is mounted to the D3 camera and with 1/500 sec. shutter speed.

•Guide number with Auto FP High-Speed Sync varies depending on the camera’s shutter speed. For example, when the shutter speed is changed from 1/500 sec. to 1/1000 sec., the guide number decreases 1 EV. The faster the shutter speed, the smaller the guide number.

•BA: With the Nikon Diffusion Dome attached

•WP: With the wide-flash adapter in place

F–20