Understanding digital camera--automatic speed article (ISO Auto)

In specific cases, the photographer needs to set the camera exposure, according to shooting a subject and composition, and other select the aperture and shutter speed combination. When the light quantity changes, for example games evening illumination using flood lights, the photographer must change the aperture or shutter speed to get the perfect shot. You can also choose another way, that is, change the negative speed (you can manually change

In specific cases, the photographer needs to set the camera exposure, according to shooting a subject and composition, and other select the aperture and shutter speed combination.

When the light quantity changes, for example games evening illumination using flood lights, the photographer must change the aperture or shutter speed to get the perfect shot. You can also choose another way, that is, change the negative speed (you can manually change the digital camera's electronic system sensitivity), equivalent to use faster type of film (assuming that reduces the amount of light). However, this ISO AUTO feature allows the camera to automatically change the ISO setting, so photographers can simply set the aperture and shutter speed, and then let the camera up or down (grade 4) sensor sensitivity.

This feature in the personal settings menu, you can open and close the menu.

When you change the speed camera, the camera viewfinder in direction will Flash, the camera displays the mode (M, A, S or P), for example monocular camera series camera displays the [AUTO] and [ISO A]. If you have adjusted the user select the ISO value, the image viewing camera information, this value appears in red. Speed control in the camera's ISO range.

Although users often only in manual and shutter speed priority mode see Auto ISO, but in fact Auto ISO is available for following all the exposure mode.

When you activate Auto ISO, [Auto] will be displayed in ISO image capture information in.

Manual

In manual mode, the exposure settings (aperture and shutter speed) will be fixed by the user, when the exposure/light status changes, Auto ISO will change the ISO.

Note: If in manual exposure mode using Auto ISO feature, when the shutter speed or aperture at 4-level scope changes, the camera's electronic analog exposure display will continue to indicate the correct exposure. This is because the Auto ISO system will increase/decrease the ISO setting to keep the user set the correct exposure.

Shutter Priority AE

The shutter speed priority mode, the shutter speed set by the user, and the aperture from the camera.

If you change the exposure conditions, aperture will change according to need. If you get the right exposure the desired aperture beyond the range of the lens aperture, Auto ISO will increase speed.

Aperture priority

In Aperture priority mode, aperture value set by the user, and the shutter speed is determined by the camera.

If the exposure condition changes, and obtain the correct exposure the desired shutter speed out of your camera's shutter speed range, Auto ISO will increase speed. Note: because D-SLR camera shutter speed range is very large, so in normal circumstances are rarely out of the camera's shutter speed range. When you use a smaller aperture settings (such as F11) or in very bright conditions, select a higher ISO, Auto ISO will only be able to light a darker environment.

D70 allows the user to select the shutter speed, and Auto ISO can shutter speed through the Auto ISO menu improve darker light environment in ISO/ISO.

Program

In the program, automatic or digital pluralism shooting mode, Aperture and shutter speed values set by the camera.

When the exposure condition is changed, the camera will change the shutter speed and aperture to get the correct exposure. When you get the right exposure the desired shutter speed out of your camera's shutter speed range and can no longer adjust to aperture, Auto ISO film speed will increase proportionally.

Note: because D-SLR camera shutter speed range is very large, so programs, automatic or digital pluralism shooting mode Auto ISO will only in Dim environments, or in very bright conditions, select a higher ISO value.

D70 allows the user to select the shutter speed, and Auto ISO can shutter speed through the Auto ISO menu improve darker light environment in ISO/ISO.

In the following scenario, the Auto ISO will not be able to use

In the D100 and D2 series, if speed is [Hi-1] or [Hi-2], ISO Auto will not be able to open.

Similarly, if ISO Auto is ON (open), you cannot select [Hi-1] or [Hi-2]. If you open the ISO Auto, ISO when using Flash will use the user selects a fixed value.

Note: the higher the speed, the noise in the image.