Practice Scale Of A Photograph (8.3.2) - Photogrammetry - Geo Informatics

Practice: Scale of a Photograph

Lesson 8.3.2Photogrammetry

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9 questions

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2 cards from this section. Quick, good the night before a test.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the formula for calculating the scale of a photograph?
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Think about how the camera settings relate to the picture's physical area.
Question 2.
If the focal length is 60mm and the flying height is 300m with an average elevation of 50m, what is the scale?
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Subtract the average ground elevation from the flying height before dividing.
3Question 3.
What does the scale of a photograph express?
- The camera quality
- The relationship between image size and actual size
- The average ground elevation
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Think about why we measure physical things.
4Question 4.
True or False: A higher flying height increases the scale of a photograph.
- True
- False
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Consider how distance affects your view.
Question 5.
If two photographs are taken at different heights but using the same focal length of 35mm, how do you determine which photo has a wider scale?
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Focus on how flying lower affects viewing detail.
Question 6.
Given a focal length of 24mm and an average elevation of 50m, if the flying height is increased to 200m, calculate the new scale and discuss its implications.
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Consider how lower detail may affect planning.

5 more questions in this section. Enroll free to practise them all.