4.11.3.1. Lens stereoscopes

Try these first

1. 1.

   What is a lens stereoscope?

   Hint

   Think of how two images create a 3D effect.

2. 2.

   Name one advantage of lens stereoscopes.

   Hint

   Consider where you could carry this device.

3. 3.

   What is the main function of a lens stereoscope?

   • To view 2D images
   • To view stereo-pairs
   • To magnify single images

   Hint

   Think about its comparison to human vision.

4. 4.

   True or False: Lens stereoscopes are only effective for large-format photographs.

   • True
   • False

   Hint

   Consider the portability factor.

5. 5.

   A surveyor is using a lens stereoscope to view a stereo-pair of aerial photographs. Explain how scaling and magnification can affect the interpretation of terrain features.

   Hint

   Relate this to how the device's design affects usability.

6. 6.

   Discuss the importance of eyepiece adjustments in using lens stereoscopes. How can improper adjustments lead to misinterpretations?

   Hint

   Consider the ergonomic aspect and its effect on clarity.