Article
3D Photography Stereo Base
Look Up
This is apart of a series of articles on 3D photography, the
best starting point is
3D Photography -
An Introduction. 
In this article we are looking at the distance sideways between the position
one photograph of a stereo pair is taken from the other.
This page follows on from a page
explaining Stereo
Base
and methods of computing it in detail.
This sheet uses a simple method that
does not account for the furthest distance an item is away.It uses a
simplified way of working out the distance to slide the camera between two
photos that will become a stereo pair, this sliding distance is known as the
stereo base.
With the table below the
focal length of the lens is shown in the left hand column, and the stereo base
at the top in mm. The result shown is the nearest distance that should be included
in a 3D photo.
This simplified table
does not take into account how far the furthest item is away.
Remember you still have
to consider depth of field.
Table shows the nearest
distance in metres that the closest items should be from the camera.
|
Lens |
Stereo Base mm |
|
mm |
30 |
35 |
40 |
45 |
50 |
55 |
60 |
70 |
75 |
80 |
85 |
90 |
95 |
100 |
|
12 |
0.4 |
0.4 |
0.5 |
0.5 |
0.6 |
0.7 |
0.7 |
0.8 |
0.9 |
1.0 |
1.0 |
1.1 |
1.1 |
1.2 |
|
15 |
0.5 |
0.5 |
0.6 |
0.7 |
0.8 |
0.8 |
0.9 |
1.1 |
1.1 |
1.2 |
1.3 |
1.4 |
1.4 |
1.5 |
|
18 |
0.5 |
0.6 |
0.7 |
0.8 |
0.9 |
1.0 |
1.1 |
1.3 |
1.4 |
1.4 |
1.5 |
1.6 |
1.7 |
1.8 |
|
21 |
0.6 |
0.7 |
0.8 |
0.9 |
1.1 |
1.2 |
1.3 |
1.5 |
1.6 |
1.7 |
1.8 |
1.9 |
2.0 |
2.1 |
|
24 |
0.7 |
0.8 |
1.0 |
1.1 |
1.2 |
1.3 |
1.4 |
1.7 |
1.8 |
1.9 |
2.0 |
2.2 |
2.3 |
2.4 |
|
27 |
0.8 |
0.9 |
1.1 |
1.2 |
1.4 |
1.5 |
1.6 |
1.9 |
2.0 |
2.2 |
2.3 |
2.4 |
2.6 |
2.7 |
|
30 |
0.9 |
1.1 |
1.2 |
1.4 |
1.5 |
1.7 |
1.8 |
2.1 |
2.3 |
2.4 |
2.6 |
2.7 |
2.9 |
3.0 |
|
35 |
1.1 |
1.2 |
1.4 |
1.6 |
1.8 |
1.9 |
2.1 |
2.5 |
2.6 |
2.8 |
3.0 |
3.2 |
3.3 |
3.5 |
|
40 |
1.2 |
1.4 |
1.6 |
1.8 |
2.0 |
2.2 |
2.4 |
2.8 |
3.0 |
3.2 |
3.4 |
3.6 |
3.8 |
4.0 |
|
45 |
1.4 |
1.6 |
1.8 |
2.0 |
2.3 |
2.5 |
2.7 |
3.2 |
3.4 |
3.6 |
3.8 |
4.1 |
4.3 |
4.5 |
|
50 |
1.5 |
1.8 |
2.0 |
2.3 |
2.5 |
2.8 |
3.0 |
3.5 |
3.8 |
4.0 |
4.3 |
4.5 |
4.8 |
5.0 |
|
55 |
1.7 |
1.9 |
2.2 |
2.5 |
2.8 |
3.0 |
3.3 |
3.9 |
4.1 |
4.4 |
4.7 |
5.0 |
5.2 |
5.5 |
|
60 |
1.8 |
2.1 |
2.4 |
2.7 |
3.0 |
3.3 |
3.6 |
4.2 |
4.5 |
4.8 |
5.1 |
5.4 |
5.7 |
6.0 |
|
65 |
2.0 |
2.3 |
2.6 |
2.9 |
3.3 |
3.6 |
3.9 |
4.6 |
4.9 |
5.2 |
5.5 |
5.9 |
6.2 |
6.5 |
|
70 |
2.1 |
2.5 |
2.8 |
3.2 |
3.5 |
3.9 |
4.2 |
4.9 |
5.3 |
5.6 |
6.0 |
6.3 |
6.7 |
7.0 |
|
80 |
2.4 |
2.8 |
3.2 |
3.6 |
4.0 |
4.4 |
4.8 |
5.6 |
6.0 |
6.4 |
6.8 |
7.2 |
7.6 |
8.0 |
|
90 |
2.7 |
3.2 |
3.6 |
4.1 |
4.5 |
5.0 |
5.4 |
6.3 |
6.8 |
7.2 |
7.7 |
8.1 |
8.6 |
9.0 |
|
100 |
3.0 |
3.5 |
4.0 |
4.5 |
5.0 |
5.5 |
6.0 |
7.0 |
7.5 |
8.0 |
8.5 |
9.0 |
9.5 |
10.0 |
|
125 |
3.8 |
4.4 |
5.0 |
5.6 |
6.3 |
6.9 |
7.5 |
8.8 |
9.4 |
10.0 |
10.6 |
11.3 |
11.9 |
12.5 |
|
150 |
4.5 |
5.3 |
6.0 |
6.8 |
7.5 |
8.3 |
9.0 |
10.5 |
11.3 |
12.0 |
12.8 |
13.5 |
14.3 |
15.0 |
|
175 |
5.3 |
6.1 |
7.0 |
7.9 |
8.8 |
9.6 |
10.5 |
12.3 |
13.1 |
14.0 |
14.9 |
15.8 |
16.6 |
17.5 |
|
200 |
6.0 |
7.0 |
8.0 |
9.0 |
10.0 |
11.0 |
12.0 |
14.0 |
15.0 |
16.0 |
17.0 |
18.0 |
19.0 |
20.0 |
|
250 |
7.5 |
8.8 |
10.0 |
11.3 |
12.5 |
13.8 |
15.0 |
17.5 |
18.8 |
20.0 |
21.3 |
22.5 |
23.8 |
25.0 |
|
300 |
9.0 |
10.5 |
12.0 |
13.5 |
15.0 |
16.5 |
18.0 |
21.0 |
22.5 |
24.0 |
25.5 |
27.0 |
28.5 |
30.0 |
|
350 |
10.5 |
12.3 |
14.0 |
15.8 |
17.5 |
19.3 |
21.0 |
24.5 |
26.3 |
28.0 |
29.8 |
31.5 |
33.3 |
35.0 |
|
400 |
12.0 |
14.0 |
16.0 |
18.0 |
20.0 |
22.0 |
24.0 |
28.0 |
30.0 |
32.0 |
34.0 |
36.0 |
38.0 |
40.0 |
Example:- 50mm lens at a 70mm
stereo base shows the nearest item should be at least 3.5 metres away.
A printable PDF file is available of this
look up sheet,
Stereo Base Look Up Table
(PDF Version)
See Also our
3D Section
for more articles and projects on this topic. |
