Analyzing Shutter Speed and ROI Capture in Nikon D750 for Academic Research

In case 1, the camera's sampling frequency is 50 Hz, and the corresponding shutter speed is 1/100 s. The Nikon D750 camera utilizes a longitudinal shutter, meaning that the shutter is closed horizontally. As a result, the ROI of different floors is captured simultaneously in a digital image, eliminating the need to account for location differences between multiple ROIs. For this study, an ROI with a width of 80 pixels in the direction of shutter movement was selected. Through calculations, it can be determined that the time required for a single ROI to be captured is denoted as "t".