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Cress Photo
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CAPLESS "PHOTOFLUX"
Flashbulb PF1

THE LATEST DEVELOPMENT IN FLASHBULBS

Again, Philips are the first to introduce a revolutionary flashbulb, which will bring indoor photography within the reach of everybody.
The PF 1 capless "Photoflux" flashbulb together with adaptor is suitable for every existing flash gun. Compared to its small dimentions, it has a very high light output.

FLASHTIME CHARACTERISTICS

To insert the PF 1 in the existing flash guns a special adaptor is to be used. This adaptor carries a device to enable the user to remove the lamp without touching it.

	PF 1 clear	PF 1/97 blue
Litht output lm/sec.	6500	3250
Max. luminous flux Mlm.	0.6	0.3
Time to full peak msec.	18	18
Flash duration at half peak msec.	8-10	8-10
Time to half peak in msec.	14	14
Approx colour temp. °K	ca. 4000	6000
Voltage range V	3-30	3-30
Diameter	22.5	22.5
Ovl.	51	51

GUIDE NUMBERS BASED

Exp. time sec.	Filmspeed ASA
Exp. time sec.	12-20	25-40	50-80	100-160	200-320
1/400-1/500(M)	6	9	12	18	25
1/200-1/300(M)	9	12	18	25	35
1/100(M)	12	18	25	35	50
1/50-1/60(M)	15	20	30	40	60
1/25-1/30(X)	18	25	35	50	70

GUIDE NUMBERS TENTATIVE VALUES

		Exposure time in sec.
		1/50-1/60(M)	1/25-1/30(X)
PF 1/97 (BLUE)	Daylight colour film negative	10	12
PF 1/97 (BLUE)	Daylight colour film reversal	8	10

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Bill Cress
PO Box 4262
Wayne, NJ 07474-4262
tel. (973) 694-1280
fax. (973) 694-6965

For more information or to order, e-mail wcress@ix.netcom.com