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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.

 


By: Keith Park   Section: 3D Section Key:
Page Ref: 3D_ Stereo_Base_lookup Topic: 3D  Last Updated: 01/2010
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