I use that very technique. I walk out the door with a folding camera and my little Sekonic, slide the dome in place, take my incident reading, and that is the "reading" unless things change drastically. If the subject is in the shade I drop two stops, maybe three if it is real deep shade. If I am out for a long walk I may double check along the way but it rarely changes much. Usually it works great and when I develop my film it all comes out with the same exposure. Of course, if it is wrong...it is all wrong!
Originally Posted by Bill Burk