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A colourless grey filter that's used to evenly reduce the light reaching the film or CCD without affecting the colour.
An automatic exposure mode which chooses a small aperture to increase the distance in focus and a long shutter speed to help capture detail in dim lighting conditions. Using some form of camera support is normally recommended when using this scene mode, as the longer exposure duration can cause images to be blurred through camera movement.
Two points on the lens axis where a ray of light enters and leaves. The front point is where image distance is measured from and the rear one is where the focal length is measured from.
Random coloured pixels that appear in dark or shadow areas when the light levels are below the camera's CCD sensitivity range. Noise is also often seen from scans made using a scanner that doesn't have a wide enough dynamic range to cope with the shadow and highlight areas in one scan. Some image editing programs have a Noise filter that adds a grain pattern to the image to make it look more like a natural photograph taken using film.
A lens that's also called standard because it has a focal length roughly the same as the diagonal of the film format and is around the same magnification as the naked eye.
Shaped cuts on the edge of sheet film to indicate which type of film is being used.