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Philips
Flashbulb Data
from 1955,
1970 & 1976 Catalogs
Note: Guide Numbers shown are in meters
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| "PHOTOFLUX"
flashbulbs |
Photography
today would be absolutely inconceivable
without the flashlight that is produced
by flashbulbs. Over 20 years ago,
Philips introduced the first "Photoflux"
flashbulb and from that time onwards
the name "Photoflux" stood
for quality and reliability. Philips
research always went forward to
produce better flashbulbs, supplying
more light and taking less space
and we dare to say that more and
new important developments lie ahead.
The program now available comprises
10 different types, all made with
the famous Philips accuracy. |
| "PHOTOFLUX"
flashbulbs M-class
These flashbulbs are suitable for
between-the-lens shutters, they
can be used with the open flash
method as well as for cameras with
built-in synchronization. For colour
photography these lamps are available
with a special blue filter lacquer.
When ordering no. 97 is to be added
to the type number of the clear
type. |
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| Type |
Light
output
lmsec. |
Max.
luminous
flux
Mlm. |
Time
to
full peak
msec. |
Flash
duration at
half peak
msec. |
Time
to
half peak
msec. |
Approx.
colour
temp.
°K |
Voltage
range
V |
Cap |
Colour |
Diam. |
Ovl. |
| PF
3N |
5500 |
0.5 |
20 |
8 |
16 |
3800 |
3-30 |
BA
15 s |
clear |
22 |
52 |
| PF
14N |
10000 |
0.8 |
20 |
10 |
16 |
3800 |
3-30 |
BA
15 s |
clear |
26 |
59 |
| PF
25N |
18000 |
1.4 |
20 |
12 |
15 |
3800 |
3-30 |
BA
15 s |
clear |
30 |
65 |
| PF
25N/97 |
9000 |
0.7 |
20 |
12 |
15 |
6000 |
3-30 |
BA
15 s |
blue |
30 |
65 |
| PF
38E |
30000 |
1.8 |
20 |
16 |
13 |
3800 |
3-30 |
E
27 |
clear |
50 |
102 |
| PF
60E |
62000 |
2.8 |
20 |
20 |
11 |
3800 |
3-30 |
E
27 |
clear |
60 |
116 |
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PF 60 E/97
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30000 |
1.4 |
20 |
20 |
11 |
3000 |
3-30 |
E
27 |
blue |
60 |
116 |
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GUIDE
NUMBERS
TENTATIVE VALUES |
Exposure
time in sec. |
| 1/25-1/30
(X) |
1/50-1/60
(M) |
| Daylight
colour film
negative |
PF
25 N/97
PF 60 N/97 |
20
40 |
15
30 |
| Daylight
colour film
reversal |
PF
25 N/97
PF 60 N/97 |
15
30 |
12
25 |
GUIDE
NUMBERS
| Type |
Exposure
time
sec. |
Filmspeed
in ASA |
| 12-20 |
25-40 |
50-80 |
100-160 |
| PF
3 N |
1/400-1/500(M)
1/200-1/300(M)
1/100(M)
1/25(x) or 1/50(M) |
5
7
10
15 |
7
10
15
20 |
10
15
20
30 |
15
20
30
40 |
| PF
14 N |
1/400-1/500(M)
1/200-1/300(M)
1/100(M)
1/25(x) or 1/50(M) |
7
10
15
20 |
10
20
15
30 |
15
30
20
40 |
20
30
40
50 |
| PF
25 N |
1/400-1/500(M)
1/200-1/300(M)
1/100(M)
1/25(x) or 1/50(M) |
10
15
20
30 |
15
20
30
40 |
20
30
40
50 |
30
40
55
80 |
| PF
38 E |
1/400-1/500(M)
1/200-1/300(M)
1/100(M)
1/25(x) or 1/50(M) |
15
20
30
40 |
20
30
40
50 |
30
40
55
80 |
40
55
80
110 |
| PF
60 E |
1/400-1/500(M)
1/200-1/300(M)
1/100(M)
1/25(x) or 1/50(M) |
20
30
40
50 |
30
40
55
80 |
40
55
80
110 |
55
80
110
155 |
FLASHTIME
CHARACTERISTICS
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CRESS Photo
manufactures
flashpans, flashguns ,
ignition devices for
flashbulbs, special
effects FX
apparatus... |
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