billcress@ix.netcom.com
Tel: 973-694-1280 Fax: 973-694-6965
     
 

 
  Philips Flashbulb Data

from 1955, 1970 & 1976 Catalogs
Note: Guide Numbers shown are in meters

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CAPLESS "PHOTOFLUX"
Flashbulb PF1


Note: This is a Bayonet to European Philips Adapter

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

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

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
billcress@ix.netcom.com


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