Olympus E-330 EVOLT E-330 Advanced Manual (English) - Page 184

DCF Design rule for Camera File system

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Glossary 11 Information Compression rate Compression is a method of reducing file size by abbreviating some contents of data, and compression rate denotes the amount of compression. The actual effect of the selected compression rate could vary with the content of the image. The numbers for the compression rate selected with this camera provide only a general scale for reference and are not precise measurements. DCF (Design rule for Camera File system) A standard for image files by the Japan Electronics and Information Technology Industries Association (JEITA). Depth of Field Depth of Field refers to the distance from the nearest to the furthest point of perceived "sharp" focus in a picture. Digital ESP (Electro-Selective Pattern) Light Metering This determines the exposure by splitting the image into 49 areas and metering and calculating the light levels in each area. DPOF (Digital Print Order Format) This is for saving desired print settings on digital cameras. By entering which images to print and the number of copies of each, the user can easily have the desired images printed by a printer or print lab that supports the DPOF format. Eclipsing (Vignetting) This refers to when an object obscures part of the field of view so that the whole subject is not photographed. Vignetting also refers to when the image seen through the viewfinder does not exactly match the image shot through the objective lens, so the photographed image includes objects not seen through the viewfinder. In addition, vignetting can occur when an incorrect lens hood is used, causing shadowing to appear in the corners of the image. EV (Exposure Value) A system for measuring exposure. EV0 is when the aperture is at F1 and the shutter speed is 1 second. The EV then increases by 1 each time the aperture increases by one F stop or the shutter speed increases by one increment. EV can also be used to indicate brightness and ISO settings. Exposure The amount of light used to capture an image. The exposure is determined by the length of time the shutter is open (shutter speed) and the amount of light that passes through the lens (aperture). Image pickup device This converts light passing through the lens into electrical signals. On this camera, light is picked up and converted into RGB signals to build a single image. 184

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184
Glossary
Information
11
Compression rate
Compression is a method of reducing file size by abbreviating some contents
of data, and compression rate denotes the amount of compression. The actual
effect of the selected compression rate could vary with the content of the
image. The numbers for the compression rate selected with this camera
provide only a general scale for reference and are not precise measurements.
DCF (Design rule for Camera File system)
A standard for image files by the Japan Electronics and Information
Technology Industries Association (JEITA).
Depth of Field
Depth of Field refers to the distance from the nearest to the furthest point of
perceived “sharp” focus in a picture.
Digital ESP (Electro-Selective Pattern) Light Metering
This determines the exposure by splitting the image into 49 areas and
metering and calculating the light levels in each area.
DPOF (Digital Print Order Format)
This is for saving desired print settings on digital cameras. By entering which
images to print and the number of copies of each, the user can easily have the
desired images printed by a printer or print lab that supports the DPOF format.
Eclipsing (Vignetting)
This refers to when an object obscures part of the field of view so that the
whole subject is not photographed. Vignetting also refers to when the image
seen through the viewfinder does not exactly match the image shot through
the objective lens, so the photographed image includes objects not seen
through the viewfinder. In addition, vignetting can occur when an incorrect
lens hood is used, causing shadowing to appear in the corners of the image.
EV (Exposure Value)
A system for measuring exposure. EV0 is when the aperture is at F1 and the
shutter speed is 1 second. The EV then increases by 1 each time the aperture
increases by one F stop or the shutter speed increases by one increment. EV
can also be used to indicate brightness and ISO settings.
Exposure
The amount of light used to capture an image. The exposure is determined by
the length of time the shutter is open (shutter speed) and the amount of light
that passes through the lens (aperture).
Image pickup device
This converts light passing through the lens into electrical signals. On this
camera, light is picked up and converted into RGB signals to build a single
image.