What size should the targets be?
xe “What size should the targets be?” Can I use different size targets on the same measurement? The target size depends on the distance from the camera to the object. A rough rule of thumb is to use a target 2 millimeter (.040″) in diameter for every meter of object size. For example, you should use a 6 mm diameter target for a 3 meter object. meters (10 feet) from the object to the camera. If necessary, you can use smaller target sizes by increasing the strobe power. For best results, we recommend you try to use the same size targets on a measurement whenever possible. However, target sizes which vary by up to 2 to 1 in size are usually acceptable. See Target Sizes for more information.