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Thirty
The INTERNATIONAL PHOTOGRAPHER
September, 1933
PIONEER GOES TO HIS LONG HOME
The sudden death of Mr. Archibald H. Van Guysling at his home in Los Angeles, California, August 6, from heart attack removes one of the early outstanding figures in the moving picture industry of Southern California.
Born in Albany, New York, January 10, 1871, he was a descendent of the fifth generation of Elias Van Guysling who arrived in New Amsterdam April 15, 1660, from Zealand, Holland, one of the early Patroons of New York City.
He arrived in Los Angeles in March, 1893, and later located with his family here. In 1904, upon the advice of his brother, Mr. G. E. Van Guysling, who at the time was general manager of the old Biograph Company, at 11 East 14th Street, New York City, he went east, spending a year there in familiarizing himself with the moving picture industry. Returning to Los Angeles he became associated with Mr. Otis M. Gove, a photographer of outstanding ability, and they opened a branch at 2623 West Pico Street, Los Angeles, under the name of the American Mutoscope and Biograph Company.
The first moving picture made on the West Coast for general exhibition service they shot June 10, 1906, at Plummer's Rancho in Colegrove at Santa Monica
Boulevard and Vista Streets in the present Hollywood, this occasion being the annual field day of the Vaquero Club of which Mr. Van Guysling was a member. This event, in greater details, presenting titles of moving pictures and productions with names of parties participating, etc., was covered in THE INTERNATIONAL PHOTOGRAPHER of June, 1932.
Mr. Van Guysling retired from active business some years ago to devote his last years to his family circle. He was a member of the Holland Society of New York, Golden State Lodge No. 358 F. & A. M., Los Angeles Consistory S. R. 32. His funeral, held August 8 at Pierce Brothers' Mortuary, under auspices of the Masons, was largely attended ; burial in his family lot at Inglewood Park Cemetery. Deceased left wife, two daughters and a son, all married, to mourn his loss.
DO YOU KNOW
[Back Flow from Out of Focus)
That this department supports the N. R. A. and does not hire child labor; though at times it may seem as if a child were writing it.
That CHUCK GEISSLER donates the following: "Hallejuha! I'm a dime again," as sung by the dollar.
That I have been in a jurisdictional dispute and have been locked out since last September.
That I wonder if anyone sent for the free, week's trial of Normalettes.
21
SENSITOMETRY
CONVERTING DENSITY READINGS TO GAMMA.
GAMMA READINGS FOR USE WITH SENSITOMETRIC STRIP
IN WHICH EACH STEP OF THE EXPOSURE SCALE
REPRESENTS AN INCREASE IN EXPOSURE
EQUIVALENT TO ONE-HALF STOP
Average Density Increase Between
Two Exposure
Steps
CAMMA
Average Density Increase Between
Two Exposure
Steps
CAMMA
Average Density Increase Between
Two Exposure
Steps
CAMMA
.005
.033
.155
1.033
.305
2.033
.010
.067
.160
1.067
.310
2.067
0.15
.100
.165
1.100
.315
2.100
.020
.133
.170
1.133
.320
2.133
.025
.167
.175
1.167
.325
2.167
.030
.200
.180
1.200
.330
2.200
.035
.233
.185
1.233
.335
2.233
.040
.267
.190
1.267
.340
2.267
.045
.300
.195
1.300
.345
2.300
.050
.333
.200
1.333
.350
2.333
.055
.367
.205
1.367
.355
2.367
.060
.400
.210
1.400
.360
2.400
.065
.433
.215
1.433
.365
2.433
.070
.467
.220
1.467
.370
2.467
.075
.500
.225
1.500
.375
2.500
.080
.533
.230
1.533
.380
2.533
.usS
.567
.235
1.567
.385
2.567
.090
.600
.240
1.600
.390
2.600
.095
.633
.245
1.633
.395
2.633
.100
.667
.250
1.667
.400
2.667
.105
.700
.255
1.700
.405
2.700
.110
.733
.260
1.733
.410
2.733
.115
.767
.265
1.767
.415
2.767
.120
.800
.270
1.800
.420
2.800
.125
.833
.275
1.833
.425
2.833
.130
.867
.280
1.867
.430
2.867
.135
.900
.285
1.900
.435
2.900
.140
.933
.290
1.933
.440
2.933
.145
.967
.295
1.967
.445
2.967
.1 in
1.000
.100
2.000
.450
3.000
ANGLE OF VIEW
16 mm. FILM
ANCLE OF VIEW AND SIZE OF FIELD EMBRACED BY LENSES OF VARIOUS FOCAL LENGTHS
Distance
in
Feet
to
Subject
ANCLE OF VIEW WHEN
FOCUSED AT INFINITY
15 mm. Lens
20 mm. Lens
25 mm. Lens
75 mm. Lens
Vertical Angle
Horizontal Angle
Vertical
Angle
Horizontal Angle
Vertical Angle
Horizontal Angle
Vertical Angle
Horizontal Angle
27.0°
35.6°
20.5°
27.1°
16.4°
21.9°
5.5°
7.4°
Hei
ght and
Width
sf Subjec
t in Fee
t include
d in Pictu
re
1
.48 1
>v .64
.36
iy .48
.28 1
y .38
.094 by
.125
2
.96 1
>y 1.28
.72
by .96
.57 h
y .76
.190 by
.254
3
1.4 1
iy 1.9
1.1 by 1.4
.86 b
y 1.15
.285 by
.38
4
1.9 1
>y 2.6
1.4
jy 1.9
1.1 by 1.5
.38 by
.51
5
2.4 1
>y 3.2
1.8
ay 2.4
1.4 by 1.9
.48 by
.64
6
2.9 1
)y 3.8
2.2
iv 2.9
1.7 b
y 2.3
.58 by
.77
7
3.4 1
)y 4.5
2.5
jy 3.4
2.0 by 2.7
.67 by
.89
8
3.8 1
iy 5.1
2.9
by 3.8
2.3 b
y 3.1
.77 by
1.02
9
4.3 t
>y 5.8
3.2
by 4.3
2.6 by 3.4
.85 In
1.14
111
4.8
)v 6.4
3.6
->y 4.8
2.8 1
v 3.8
.96 by
1.28
11
5 3
Dy 7.0
4.0
by 5.3
3.2 by 4.2
1.0 bv
1.4
12
5.8
3v 7.7
4.3
by 5.8
3.5 by 4.6
1.1 by
1.5
13
6.2
■>y 8.3
4.7
by 6.3
3.7 by 5.0
1.3 bv
1.7
14
6.7
:>y 9.0
5.0
by 6.8
4.0 by 5.4
1.4 by
1.8
15
7.2
ay 9.6
5.4
by 7.3
4.3 by 5.8
1.4 by
1.9
16
7.7 1
iy 10.3
5.7
by 7.8
4.6 by 6.2
1.5 by
2.0
17
8.2 1
jy 10.9
6.1
by 8.2
4.9 by 6.5
1.6 by
2.2
18
8.6
jy 11.6
6.5
by 8.7
5.2 by 6.9
1.7 by
2.3
19
9.1
jy 12.2
li.S
by 9.2
5.5 by 7.3
1.8 bv
2.4
20
9.6
3V 12.9
7.2
jy 9.7
5.S 1
v 7.7
1.9 by
2.6
25
12.0
ay 16.1
9.0
by 12.1
7.2 by 9.6
2.4 by
3.2
30
14.4
iy 19.3
10.8
by 14.5
8.6 1
s 11.6
2.9 by
3.8
35
16.8
ly 22.5
12.6
by 16.9
10.1 by 13.5
3.4 bv
4.5
40
19.2
by 25.7
14.4
by 19.3
11.5 1
>v 15.4
3.8 by
5.1
45
21.6
iy 28.9
16.2
by 21.7
13.0 by 17.4
4.4 by
5.8
50
24.0
3y 32.2
18.0
iv 24.2
14.4 by 19.3
4.8 by
6.4
60
28.8
->y 38.6
21.6
by 29.0
17.3 by 23.1
5.8 by
7.7
70
33.6
ly 45.0
25.2
,v 33.8
20.2 by 27.0
6.8 by
9.0
80
38.4
>y 51.4
28.8
by 38.7
23.1 by 30.9
7.7 bv
10.2
911
43.2
jy 57.8
32.4
by 43.4
26.0 bv 34.7
8.6 by
11.5
100
48.0
jy 64.3
36.0
by 48.3
28.9 1
>y 38.6
'• 1, 1 . %
12. S
Only those density readings which fall in the straight line portion of the characteristic curve should be used in computing Camma.
Based on standard projection aperture .284 by .380 of an inch.
Note difference between 16 mm. and 35 mm. tables: 16 mm. table is based on picture as seen on the screen. 35 mm. table is based on picture seen on the ground-glass.