Camera lens calibration
Has anybody ever calibrated that their lenses before? I am having the darndest time trying to calibrate mine. My issue is I have the spider calibrator target. It’s not that big and I’m supposed to be about 6 feet away from the target. When I take the picture and zoom in in photoshop the lines and numbers are so thin and small on the ruler that I lose detail and can’t tell what exactly is in focus. Any suggestions?