Sunset over Carson River Valley. First roll of medium format film I shot. I used a 6x8 back, which didn't seem to have any benefit, since both the right and left edges had to be cropped because of uneven and unattractive edges. I bracketed +/- 1 stop from the reading my iPhone gave me and the middle exposure was dead on. This is the next night from the previous image from the opposite side of the same valley. Again, the iPhone light meter app chose a good exposure.