The Dictionary Of Photography
A True Historic Record Of The Art & Practice Of Photography 100 Years Ago.
|
. Angle
One of the most usual methods, and perhaps the most convenient |
||
 |
||
|
method of all, is by means ot the following plan. Draw a straight line a B equal in length to the longer base of the plate used, bisect |
||
|
|
||
 |
||
|
|
||
|
Fig. 2. |
||
|
this accurately at c, from c draw a perpendicular d c equal to the focal length of the lens, connect a d, d b, then the angle included
35 |
||