Light Meter Calibration Procedure

As light meter calibration specialists all g r labs light meter calibration services are traceable to the national bureau of standards nist with a 0 5 in house standard for radiometric calibrations and an in house 1 0 traceability for photometric calibrations.

Light meter calibration procedure. Iso 100 in the external exposure meter and the camera and make sure that all correction values are at 0. Multiple test points are taken across the full range of the device at intervals based on type of equipment. This is to allow for the transfer from the nist standard to our secondary standards and then the transfer to the probe being calibrated. The 3 sigma accuracy to the calibrated probe is 3 0 maximum but g r labs standard is a 1 0 window from calibration to calibration.

Our light meter calibration processes ensure that your instruments meets engineering machining parts design quality control and inspection requirements. What actually happens in our 365nm standard for example is that the. Your exposure should be at a 2 8 or very close to it. You ll be confident knowing that your instruments will provide accurate measurements.

I know that many of you don t use a meter but they can be very useful in verifying the speed of the chip in the camera you might be shooting with. If you need to maintain the accuracy of your instruments then you need light meter calibration services from acs calibration. Set the same iso value e g. In order for this meter to be exact you need to perform calibration procedure described in the apps s info screen.

Switch the camera to manual mode and deactivate all functions that affect the exposure. Calibrate a light meter firstly you need to hold the meter in front of the subject. An incident meter should be pointed toward the camera. Light meter calibration light meters are utilized in a variety of industries and applications including photography cinematography osha compliance security quality assurance photosensitive materials regulatory requirements process controls and clean room standards.

If you are calibrating an incident meter use a flat disk hold the meter in front of the gray card and pointed at the camera. We state our traceability to our in house 0 5 nist standard as 3. To calibrate your meter we recommend the following method. Our light meter calibration procedure requires our experienced technicians to take measurements by direct comparison to a calibrated standard meter and reference source.