Questions tagged “measurement”

Ask the Unique Photo creator community — gear, technique, post-processing and more.

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385

How can I estimate an object's distance from its known size and a camera's field of view?

webcamfield-of-viewdistance-estimationgeometrymeasurement

Photography Stack Exchange contributor

2y ago

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264

How do I convert pixels to real-world size on a flat plane at a known distance?

lens-distortioncalibrationfield-of-viewopencvmeasurement

Photography Stack Exchange contributor

3y ago

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728

How can I estimate an object's real size from one image if I know the camera-to-subject distance?

calibrationpinhole-camera-modelfocal-lengthcomputer-visionmeasurement

Photography Stack Exchange contributor

4y ago

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2048

How can I estimate an object's height in a photo using a person of known height as a reference?

perspectiveimage-editinggimptechniquemeasurement

Photography Stack Exchange contributor

4y ago

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177

How can I sharpen SEM images in GIMP to better measure repeating structures?

sharpeningimage-processinggimpsemmeasurement

user105273

4y ago

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197

For close-range photogrammetry, where should camera-to-subject distance be measured from?

lensesphotogrammetryopticsclose-upmeasurement

Photography Stack Exchange contributor

5y ago

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217

Do pixels correspond to a fixed real-world distance across an entire photo?

lens-distortionperspectiveopticscamera-techniquemeasurement

Photography Stack Exchange contributor

6y ago

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281

How do I calculate the smallest detail a camera can resolve at a given distance?

magnificationmachine-visioncamera-resolutionopticsmeasurement

Photography Stack Exchange contributor

6y ago

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2

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409

How can I estimate the real-world width and height covered by an image?

calibrationfield-of-viewlensimage-processingmeasurement

Photography Stack Exchange contributor

7y ago

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220

Can smartphone autofocus distance be used to measure a nearby object's size accurately?

autofocusfocus-distancecamera-calibrationsmartphone-photographymeasurement

Photography Stack Exchange contributor

8y ago

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162

Can a Canon DSLR reliably measure small brightness or color changes over time?

scientific-imagingcanonrawexposuremeasurement

Photography Stack Exchange contributor

8y ago

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298

What does "sensor height" mean, and how do I find it for a phone camera?

camera-mathsmartphone-camerasensor-sizefocal-lengthmeasurement

Photography Stack Exchange contributor

8y ago

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2

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135

How can I determine the Nikon D5200 sensor-center height from the camera base for an off-camera lens support?

nikoncamera-rigslens-supportd5200measurement

Photography Stack Exchange contributor

8y ago

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238

How can I estimate a lens’s exit pupil distance from the sensor plane?

lensessensorexit-pupilopticsmeasurement

Photography Stack Exchange contributor

8y ago

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200

Can I estimate a tennis ball’s distance from the camera in video, and does camera height matter?

videoperspectiveiphoneexperimentmeasurement

Photography Stack Exchange contributor

8y ago

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2

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1329

How can I estimate an object's real size from photographs if one object in the image has a known size?

perspectivephotogrammetryopencvfocal-lengthmeasurement

Photography Stack Exchange contributor

8y ago

0

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2

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191

What is a fixed-camera setup for taking consistent top-down photos of instruments called?

reproductioncopy-standproduct-photographycamera-supportmeasurement

Photography Stack Exchange contributor

9y ago

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347

How is a camera sensor’s spectral sensitivity measured and expressed?

sensorcolor-sciencespectral-sensitivitycamera-calibrationmeasurement

Photography Stack Exchange contributor

9y ago

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365

How can I estimate real-world measurement precision from a camera's resolution?

lens-distortionphotogrammetryresolutionsensor-sizemeasurement

Photography Stack Exchange contributor

10y ago

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153

Software to automatically measure Jupiter and its moons in astrophotography images

softwarepythonimage-processingastrophotographymeasurement

Photography Stack Exchange contributor

10y ago

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