On the Nikon D70 are 11 shooting modes:

F = Full Manual
In this mode, fully manual camera settings, both shutter speed, aperture, ISO, etc..

A = Aperture Priority
In this mode the aperture can be adjusted in accordance with the will, but the shutter speed will automatically compensate the light requirement in accordance with the large aperture.

S = Shutter Priority
In this mode the shutter speed can be adjusted in accordance with the will, but the aperture will automatically compensate the light requirement in accordance with the shutter speed.

P = Program
In this mode both aperture and shutter speed automatically calculates according to the needs of light, only in this mode the exposure level can be adjusted in accordance with the will.

Auto
Auto mode is a mode where the camera fully configure all the needs of the setting, in other words in this fashion photographer stayed "snap" just.

Portrait
This mode is the branching of full auto mode, but more adapted to the needs of portrait (human photos), such as the use of tonal colors for skin tone, etc..

Landscape
This mode is the branching of full auto mode, but more adapted to the needs of landscape photographs (landscape), such as tone colors more vivid or others.

Macro
This mode is the branching of full auto mode, but more adapted to the needs of image macros (short distances, so objects appear larger), such as a more customized focus lens.

Moving Object
This mode is the branching of full auto mode, but more adapted to the needs of shooting a moving object, so the focus lens will be moving faster to adjust with the movement of objects.

Night Landscape
This mode is the branching of full auto mode, but more adapted to the needs of landscape photography at night.

Night Portrait
This mode is the branching of full auto mode, but more adapted to the needs of portrait photographs at night or low light.

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