Calibration is defined as an association between measurements - one of a scale or accuracy made or set with one piece of equipment and another measurement made in as similar way as possible with a second piece of equipment.
Who uses calibration and why?
Calibration is used by almost everyone. Instruments, machinery and technology all need to be calibrated throughout its lifetime. It is used to ensure that the needed equipment, usually something that is a measuring device is accurate.
How is it useful?
Calibration defines the accuracy and quality of measurements recorded. Over time there is a tendency for results and accuracy to 'drift'. To be confident in the results being measured there is an ongoing need to service and maintain the calibration of its equipment throughout its lifetime for reliable, accurate and repeatable measurements.
How is it relevant in photography?
Calibration is relevant in photography especially when it comes to editing your images. It can sometimes be necessary to calibrate your monitor to ensure that your eyes see the photograph on the computer the same way it would be if the image was printed out. Calibration is also important when it comes to changing the setting of your camera. Shutter speeds, apertures and ISO all need to be calibrated to ensure that their photographs come out correctly.
Examples of calibration:
- Pressure calibration - brometers, test gauges
- Electrical calibration - insulation testers, data loggers
- Mechanical calibration - scales/balances, accelerometers
- Temperature calibration - Thermal cameras, weather stations
- Humidity calibration - humidity recorders, transmitters
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