Photo Scale given Focal Length Calculator

✖Focal Length of Lens is usually represented in millimeters (mm), is the basic description of a photographic lens.ⓘ Focal Length of Lens [f_len]			+10% -10%
✖Flying height of airplane above datum (usually mean sea level) is defined as the average flying height above ground.ⓘ Flying Height of Airplane [H]			+10% -10%
✖Elevation of point, line, or area with respect to datum.ⓘ Elevation of Point [h₁]			+10% -10%

✖Photo scale is determined by the focal length of the camera and the flying height above the ground.ⓘ Photo Scale given Focal Length [P]

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Formula

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Photo Scale given Focal Length

Formula

`"P" = ("f"_{"len"}/("H"-"h"_{"1"}))`

Example

`"2.1"=("4.2m"/("11m"-"9m"))`

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Photo Scale given Focal Length Solution

STEP 0: Pre-Calculation Summary

Formula Used

Photo Scale = (Focal Length of Lens/(Flying Height of Airplane-Elevation of Point))
P = (f_len/(H-h₁))
This formula uses 4 Variables

Variables Used

Photo Scale - Photo scale is determined by the focal length of the camera and the flying height above the ground.
Focal Length of Lens - (Measured in Meter) - Focal Length of Lens is usually represented in millimeters (mm), is the basic description of a photographic lens.
Flying Height of Airplane - (Measured in Meter) - Flying height of airplane above datum (usually mean sea level) is defined as the average flying height above ground.
Elevation of Point - (Measured in Meter) - Elevation of point, line, or area with respect to datum.

STEP 1: Convert Input(s) to Base Unit

Focal Length of Lens: 4.2 Meter --> 4.2 Meter No Conversion Required
Flying Height of Airplane: 11 Meter --> 11 Meter No Conversion Required
Elevation of Point: 9 Meter --> 9 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P = (f_len/(H-h₁)) --> (4.2/(11-9))

Evaluating ... ...

P = 2.1

STEP 3: Convert Result to Output's Unit

2.1 --> No Conversion Required

FINAL ANSWER

2.1 <-- Photo Scale

(Calculation completed in 00.004 seconds)

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Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Calculator and 2200+ more calculators!

Verified by Alithea Fernandes

Don Bosco College of Engineering (DBCE), Goa

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< 4 Photogrammetry Calculators

Focal Length of Lens given Photo Scale

Go Focal Length of Lens = (Photo Scale*(Flying Height of Airplane-Elevation of Point))

Flying Height of Airplane above Datum

Go Flying Height of Airplane = ((Focal Length of Lens/Photo Scale)+Elevation of Point)

Elevation of Point, Line or Area

Go Elevation of Point = (Flying Height of Airplane-(Focal Length of Lens/Photo Scale))

Photo Scale given Focal Length

Go Photo Scale = (Focal Length of Lens/(Flying Height of Airplane-Elevation of Point))

Photo Scale given Focal Length Formula

Photo Scale = (Focal Length of Lens/(Flying Height of Airplane-Elevation of Point))
P = (f_len/(H-h₁))

What is Focal Length in Photography?

Focal length in photography refers to the distance between the lens and the sensor or film when the lens is focused at infinity.

What is a Photo Scale in Photogrammetry?

Photo scale in photogrammetry refers to the relationship between the distance on the ground and the corresponding distance on a photograph.

How to Calculate Photo Scale given Focal Length?

Photo Scale given Focal Length calculator uses Photo Scale = (Focal Length of Lens/(Flying Height of Airplane-Elevation of Point)) to calculate the Photo Scale, The Photo scale given Focal Length formula is defined as the focal length of the camera and the flying height above the ground. Photo Scale is denoted by P symbol.

How to calculate Photo Scale given Focal Length using this online calculator? To use this online calculator for Photo Scale given Focal Length, enter Focal Length of Lens (f_len), Flying Height of Airplane (H) & Elevation of Point (h₁) and hit the calculate button. Here is how the Photo Scale given Focal Length calculation can be explained with given input values -> 2.1 = (4.2/(11-9)).

FAQ

What is Photo Scale given Focal Length?

The Photo scale given Focal Length formula is defined as the focal length of the camera and the flying height above the ground and is represented as P = (f_len/(H-h₁)) or Photo Scale = (Focal Length of Lens/(Flying Height of Airplane-Elevation of Point)). Focal Length of Lens is usually represented in millimeters (mm), is the basic description of a photographic lens, Flying height of airplane above datum (usually mean sea level) is defined as the average flying height above ground & Elevation of point, line, or area with respect to datum.

How to calculate Photo Scale given Focal Length?

The Photo scale given Focal Length formula is defined as the focal length of the camera and the flying height above the ground is calculated using Photo Scale = (Focal Length of Lens/(Flying Height of Airplane-Elevation of Point)). To calculate Photo Scale given Focal Length, you need Focal Length of Lens (f_len), Flying Height of Airplane (H) & Elevation of Point (h₁). With our tool, you need to enter the respective value for Focal Length of Lens, Flying Height of Airplane & Elevation of Point and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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