4.11.3.2. Lens and mirror stereoscopes

Try these first

1. 1.

   What is a lens stereoscope?

   Hint

   Think of something that can fit in your pocket.

2. 2.

   How does a mirror stereoscope improve viewing images?

   Hint

   Consider how mirrors might help you see more of an area.

3. 3.

   What is the primary purpose of a lens stereoscope?

   • To measure height
   • To view stereo-pairs
   • To enlarge images

   Hint

   Remember what stereoscopic vision is.

4. 4.

   True or False: Mirror stereoscopes have a limited field of view.

   • True
   • False

   Hint

   Think about the advantages of mirrors in visibility.

5. 5.

   Consider you are using a mirror stereoscope to analyze a stereo-pair from a recent aerial survey. The overlapping area you wish to analyze has a height difference of 30 meters. How would you utilize the parallax bar in this context?

   Hint

   Think about how parallax relates to elevation in stereoscopy.