Pentax AF540FGZ High-SpeedSync Guide Number, ISO, 35mm, 85mm, 70mm, 50mm, 35mm, 28mm, 24mm, 58mm, 48mm, 34mm, 24mm, 19mm, 16mm, speed, *20mm, *13mm, Shutter, DIGITAL

High-Speed Sync Guide Number*With the wide-angle panel attached

ISO	Shutter	Camera format			Zoom position
	speed	35mm	85mm	70mm	50mm	35mm	28mm	24mm	*20mm
		DIGITAL	58mm	48mm	34mm	24mm	19mm	16mm	*13mm
		250	24.2	22.4	20.1	17.5	15.7	14.3	9.4
		500	18.8	17.4	15.6	13.6	12.2	11.1	7.3
ISO100		1000	14	13	11.7	10.1	9.1	8.3	5.5
		2000	10.2	9.5	8.5	7.4	6.6	6	4
		4000	7.3	6.8	6.1	5.3	4.8	4.3	2.9
		6000	6.2	5.7	5.2	4.5	4.0	3.7	2.4
		250	34.2	31.6	28.5	24.7	22.2	20.3	13.3
		500	26.5	24.6	22.1	19.2	17.2	15.7	10.3
ISO200		1000	19.8	18.4	16.5	14.3	12.8	11.7	7.7
		2000	14.4	13.4	12.0	10.4	9.4	8.6	5.6
		4000	10.4	9.6	8.6	7.5	6.7	6.1	4.0
		6000	8.8	8.1	7.3	6.3	5.7	5.2	3.4
		250	48.4	44.8	40.2	35	31.4	28.6	18.8
		500	37.6	34.8	31.2	27.2	24.4	22.2	14.6
ISO400		1000	28	26	23.4	20.2	18.2	16.6	11
		2000	20.4	19	17	14.8	13.2	12	8
		4000	14.6	13.6	12.2	10.6	9.6	8.6	5.8
		6000	12.4	11.5	10.3	8.9	8.0	7.3	4.8

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