For tricky subject matter, metering can often be fooled, so it's a good idea to also be aware of when it might go awry, and what you can do to compensate for such exposure errors see section on exposure compensation within the camera metering tutorial.
Finally, some of the above modes may also control camera settings which are unrelated to exposure, although this varies from camera to camera. Such additional settings might include the autofocus points, metering mode and autofocus modes, amongst others.
Want to learn more? Discuss this and other articles in our digital photography forums. Exact matches only. Search in title. Search in content. Search in excerpt. Low ISO Speed low image noise.
High ISO Speed high image noise. Manual M You specify the aperture, ISO and shutter speed — regardless of whether these values lead to a correct exposure. Bulb B Useful for exposures longer than 30 seconds. You specify the aperture and ISO; the shutter speed is determined by a remote release switch, or by the duration until you press the shutter button a second time. This ensures the shallowest possible depth of field.
Landscape Camera tries to pick a high f-stop to ensure a large depth of field. Compact cameras also often set their focus distance to distant objects or infinity. In addition to using a low f-stop, the fast shutter speed is usually achieved by increasing the ISO speed more than would otherwise be acceptable in portrait mode.
However, for some cameras this setting means that a flash is used for the foreground, and a long shutter speed and high ISO are used to expose the background. Check your camera's instruction manual for any unique characteristics. Follow us via Email Facebook Twitter. To add a silky look to flowing water Landscape photos on a tripod for enhanced depth of field. To add motion blur to the background of a moving subject Carefully taken hand-held photos with stabilization. You specify the aperture, ISO and shutter speed — regardless of whether these values lead to a correct exposure.
Useful for exposures longer than 30 seconds. Camera tries to pick the lowest f-stop value possible for a given exposure. Camera tries to pick a high f-stop to ensure a large depth of field. It is a dimensionless number. Aperture and shutter speed together determine exposure. Exposure is measured in exposure value EV , also called stops. Halving the shutter speed doubles the exposure 1 EV more , while doubling the aperture increases the exposure by a factor of 4 2 EV.
The word aperture is derived from the Latin word apertura which means an opening. Shutter was used in reference with photography in and meant a device for the opening and closing of the aperture of the lens. Share this comparison:. If you read this far, you should follow us:. Diffen LLC, n. Aperture vs. Shutter Speed. Comparison chart Aperture versus Shutter Speed comparison chart Aperture Shutter Speed Definition In photography, aperture refers to the diameter of the aperture slot.
When expressed as an f-number, it refers to the focal length of the lens divided by the aperture diameter. The exposure triangle helps you understand how aperture, shutter speed and ISO work together to determine the exposure.
The aperture of the lens can be adjusted to be smaller or larger. A small aperture lets very little light through. A large aperture lets a lot of light through. Therefore, the size of the aperture affects the exposure of the image, i.
In addition to contributing to the exposure, aperture controls depth of field. This refers to the amount of the image that is in focus.
A large depth of field means that all or most of the image will be in focus whether objects are near or far away. This is perfect for landscape photography. A shallow depth of field means that only part of the image will be in focus and the rest will be blurred. This is perfect for portrait photography. The shutter speed can be adjusted to be faster or slower. A fast shutter speed exposes the sensor to very little light.
A slow shutter speed exposes the sensor to a lot of light. Therefore the shutter speed affects the exposure of the image. Shutter speed is measured in seconds or fractions of a second. In addition to contributing to the exposure, shutter speed controls how motion is captured in your photos.
A fast shutter speed will freeze any movement in the scene. This is perfect for sports and action photography. A slow shutter speed will capture any movement as motion blur.
This is used in long exposure photography, for example, to capture a veiling effect on water, light trails at night, or a sense of movement in your image. Therefore ISO affects the exposure of the image. A low ISO value e.
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