January 2, 2008 Comments Off on RoT

Rules-of-Thumb are extremely interesting, especially whenbecause you don’t always dispose of the resources (mainly internet nowadays). I found these to be interesting for photography and I managed to use them on occasions.

  • Sunny 16 Rule
    The basic exposure for an average scene taken on a bright, sunny day is f/16 at a shutter speed equivalent to one over the ISO setting—that is, f/16 at 1/100 sec at ISO 100. From this you can interpolate, and try f/22 at the beach, f/11 on a cloudy-bright day, etc.
  • Moony 11, 8, and 5.6 Rules
    There are many different rules that work well when shooting the moon. One favorite for a proper exposure of a full moon is f/11 at one over the ISO setting. For pictures of a half moon, use the same shutter speed at f/8, and for a quarter moon, use the same shutter speed at f/5.6.
  • Camera Shake Rule
    The slowest shutter speed at which you can safely handhold a camera is one over the focal length of the lens in use. As shutter speeds get slower, camera shake is likely to result in an increasing loss of sharpness. So, if you’re using a 50mm lens, shoot at 1/60 sec or faster. Not enough light? Use a flash, tripod, or brace your camera against a solid object.
  • Depth of Field Rules
    When focusing on a deep subject, focus on a point about a third of the way into the picture to maximize depth of field, because the depth-of-field zone behind that point is about twice as deep as the depth-of-field zone in front of it. This works for all apertures and focal lengths, but the smaller the aperture and the shorter the focal length, and the greater the distance you shoot at, the greater the depth of field.
  • Action-stopping Rules
    To stop action moving across the frame that’s perpendicular to the lens axis, you need shutter speeds two stops faster than action moving toward or away from you. For action moving at a 45-degree angle to the lens axis, you can use a shutter speed one stop slower. For example: If a person running toward you at moderate speed can be stopped at 1/125 sec, you’ll need a shutter speed of 1/500 sec to stop the subject moving across the frame, and a shutter speed of 1/250 sec to stop him if moving obliquely with respect to the camera.
  • Sunset Rule
    To get a properly exposed sunset, meter the area directly above the sun (without including the sun). If you want the scene to look like it’s a half-hour later, stop down by one f-stop, or set exposure compensation to minus one.

source: Twelve Essential Photographic Rules


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