Question:
The aerial photograph made with the optical axis coinciding with the direction of gravity is
The aerial photograph made with the optical axis coinciding with the direction of gravity is
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Aerial photographs are classified by the orientation of the camera optical axis relative to the vertical (the direction of gravity, the plumb line).
Updated On: Jun 16, 2026
- Tilted photograph
- Vertical photograph
- Terrestrial photograph
- Oblique photograph
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The Correct Option is B
Solution and Explanation
Concept:
Aerial photographs are classified by the orientation of the camera optical axis relative to the vertical (the direction of gravity, the plumb line).
Step 1:
When the optical axis is exactly aligned with the direction of gravity, the axis is truly vertical and the photograph is taken looking straight down at the ground.
Step 2:
A tilted photograph has the axis unintentionally inclined by a small angle, an oblique photograph has the axis deliberately inclined, and a terrestrial photograph is taken from a ground station. Only the case where the axis coincides with gravity defines a vertical photograph.
Answer: Option (2) — Vertical photograph.
Aerial photographs are classified by the orientation of the camera optical axis relative to the vertical (the direction of gravity, the plumb line).
Step 1:
When the optical axis is exactly aligned with the direction of gravity, the axis is truly vertical and the photograph is taken looking straight down at the ground.
Step 2:
A tilted photograph has the axis unintentionally inclined by a small angle, an oblique photograph has the axis deliberately inclined, and a terrestrial photograph is taken from a ground station. Only the case where the axis coincides with gravity defines a vertical photograph.
Answer: Option (2) — Vertical photograph.
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