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Frame Rate and Exposure

Calculate Exposure and Frame Rate
The below calculators can be used to determine the best frame rate (fps) and exposure time (µs) based on the imaging application. 

Exposure time calculator. Provides an exposure time such that only 1 pixel of motion blur is observed based on the FOV, the object speed, and set sensor resolution. Enter the ‘Length of FOV’ in the same direction of the corresponding ‘sensor dimension’. If you have a particle traveling horizontally at 1.3 cm/s, a sensor setting of 1280x200, and you know the FOV is 640 µm x 100 µm, enter into the calculator units of ‘cm’, an object speed of ‘1.3’, a sensor resolution of ‘1280’, and ‘length of FOV’ of ‘.0640’.

Frame rate calculator. Provides a frame rate based on the field of view (FOV), the object speed, and the total number of frames the user prefers (100 frames is common). Enter the ‘Length of FOV’ in the direction of motion. If you have an object traveling horizontally at 2500 ft/s, a FOV of 1280 ft x 600 ft, and you desire 500 frames worth of object motion as it traverses the FOV, you will enter units of ‘ft’, an object speed of ‘2500’, a length of FOV of ‘1280’, and Event frames of ‘500’. 

Caution: The results are approximations and are intended to provide a reasonable target for frame rate and exposure settings. These calculations assume a constant speed and imaging orthogonally with respect to the object motion.