Three-Dimensional Photography - Principles of Stereoscopy

THE STEREOSCOPE 47 Fig. 3-10. Courtesy Keystone View Co. Another type is the split slide which is actually two separate slides, ...

48 THREE-DIMENSIONAL PHOTOGRAPHY states that true stereo is possible only when the ratios of perspec- tive and parallax are kept ...

THE STEREOSCOPE 49 the man be moved (without changing his posture) so that the parallax is diminished by 50 percent, he will app ...

50 THREE-DIMENSIONAL PHOTOGRAPHY appears to be smaller by comparison with other objects at the same apparent distance. The same ...

THE STEREOSCOPE 51 The activating stimulus of stereo vision is undoubtedly tha! of dynamic stereo diplopia. Diplopia means seein ...

52 THREE-DIMENSIONAL PHOTOGRAPHY this one spot. Do not allow the vision to shift for a second. This will be extremely difficult, ...

THE STEREOSCOPE 53 scopic reproduction, exactly the same as that which separated the similar images when the scene was viewed di ...

54 THREE-DIMENSIONAL PHOTOGRAPHY balls converge toward each other. It is obvious that both actions are definite, and that for an ...

THE STEREOSCOPE 55 The writer has never experienced either of these types of-cou- pling, and for many years the failure of tyros ...

56 THREE-DIMENSIONAL PHOTOGRAPHY gram does not in this one respect duplicate direct vision; but this fact is fortunate as far as ...

THE STEREOSCOPE 57 landscapes, owing to the confused overlapping contours, but a rounded, solid object makes an attractive slide ...

58 THREE-DIMENSIONAL PHOTOGRAPHY of left lines mingled with patches of right lines, and the patches will continually shift. The ...

THE STEREOSCOPE 59 The slightest possible motion is enough. One fourth a millimeter displacement will produce well defined stere ...

CHAPTER 4 CORRELATION OF CAMERA AND VIEWER RTHosTmEo.-Orthostereoscopy (true stereoscopy) is that ster- 0 eoscopy in which the o ...

CORRELATION OF CAMERA AND VIEWER 61 gain resulting from using long-focus camera lenses is exactly neu- tralized by the loss resu ...

62 THREE-DIMENSIONAL PHOTOGRAPHY Because so many inquiries have been received about this re- flector it should be repeated that ...

CORRELATlON OF CAMERA AND VIEWER 63 been discussed we shall confine ourselves largely at this time to the effects of abnormaliti ...

64 THREE-DIMENSIONAL PHOTOGRAPHY when the two eyes view the objects A, B, C and D, as well as an object at infinity. It is well ...

CORRELATION OF CAMERA AND VIEWER / Fig. 4-3. Camera focus less than normal. Fig. 4-4. Viewing stereo- gram made with camera focu ...

66 THREE-DIMENSIONAL PHOTOGRAPHY Fig. 4-5. d, Fig. 4-6. E 1. B and C, we may use the right side of the diagram for the new condi ...