I have an L-508. It’s both a 1-5 degree spot meter or an nice dent meter. It doesn’t average for you (at least I’m pretty sure it doesn’t) but it has two memories, so I usually take a darkest reading and a brightest reading, and put them in memory, then I usually take a reading of the subject, and the meter shows all three points on the aperture sale at the bottom of the screen, and I can use the dial to change shutter speed, which moves the three points up or down the aperture scale.