No Light Meter, No Problem – Sunny 16! When the batteries die in your fancy-pants Leica M6, don’t fret! You can still take pictures using the Sunny 16 rule! Or maybe your camera doesn’t have a light meter–or worse yet, you forgot your light meter; Sunny 16 will save the day!
As long as your subject is illuminated by bright direct sunlight, set your aperture to f/16 and your shutter speed to the inverse of your film speed or the closest value (ie. with ISO 100 film, set your shutter to 1/100th or 1/125th) and voila, you have a beautifully exposed picture.
This shirt will remind you that even though you don’t have a light meter, you can still shoot to your heart’s content and get great results.