Friday, June 27, 2008

The Abbreviations

In the world of photography, like in most worlds, there are abbreviations people use assuming that everyone else knows them. Of course, we all saw each abbreviation for the first time at least once, and then we may probably were confused. These are some of the common ones.

ACR - Adobe Camera Raw.
ADC - Analogue to Digital Conversion.
ADL - Active D-Lighting.
AF - Auto Focus.
AF-S - Auto Focus lens with SWM.
AI - Automatic Indexing. Used to describe a lens technology from Nikon that was introduced in 1977.
CCD - Charge-Coupled Device - A type of camera light sensor. Not CMOS.
CMOS - Complementary metal–oxide–semiconductor. Not CCD.
CMYK - Cyan Magenta Yellow blacK. A colour space used mainly for printing.
CNX - Capture NX. Nikon's program to edit raw NEF files.
CR2 - Canon's current raw file format.
CRW - Canon's old raw file format.
DAM - Digital Asset Management. Storing, cataloguing and finding digital documents like digital images.
DNG - Digital NeGative. Adobe's attempt at a standardized raw file format.
DOF - Depth Of Field. A long or deep DOF means that objects both close to the camera and further away are sharp. A short DOF means that only objects at a particular distance are sharp, something that makes them stand out against the blurry background and foreground.
DPP - Digital Photo Professional. Canon's program to edit raw CR2 and CRW files.
DSLR - Digital SLR.
DX - Abbreviation for the digital format used by sensors in most Nikon SLR cameras and in DX lenses. Not FX.
DR - Dynamic Range.
ED - Extra-low Dispersion. Nikon's special glass to avoid chromatic aberration with tele lenses.
EV - Exposure Value.
EXIF - Exchangeable Image file Format.
fps - Frames per second. The number of images a camera can take per second.
f-stop - Predefined values for Focal number.
FX - Full size.
HDR - High Dynamic Range.
HSM - Hyper Sonic Motor. Sigma's name for an ultrasonic motor.
HUD - Head-Up Display.
IF - Internal Focusing.
IPTC - International Press Telecommunications Council.
IQ - Image Quality.
ISO - Hardly even an abbreviation but a setting to control how much light the camera will need to produce a picture that is not underexposed. High values mean that the camera does not need much light, but at the same time, one will lose colour and increase noise in the picture. It is an abbreviation, anyhow, and it stands for International Organization for Standardization.
JPEG - The arguably most common format for digital photographs. The abbreviation means Joint Photographic Experts Group.
NAS - Nikon Acquisition Syndrome. A state of mind where you cannot help but buy more and more Nikon gear.
NEF - Nikon Electronic image Format. Nikon's format for raw files.
NR - Noise Reduction.
OOC - Out Of Camera
OVF - Optical View Finder
PP - Post Processing. Any change to a photo after it has been imported to a computer.
PS - Adobe PhotoShop
P&S - Point and Shoot (compact camera). Not a DSLR
RAW - Not an abbreviation, even though it usually is written with upper case letters. It means raw data, as in unmodified data directly from the camera.
RGB - Red Green Blue. The most common colour space for digital images.
SLR - Single Lens Reflex. Originally used to differentiate from a twin-lens reflex cameras. Now used to differentiate high end cameras from Bridge and Compact cameras.
SWM - Silent Wave Motor. Nikon's name for an ultrasonic motor.
TIFF - Tagged Image File Format. The arguably most versatile non-compressed image format. (There are also compressed variants.)
TTL - Through The Lens.
USM - UnSharp Mask. A filter in Photoshop. Also UltraSonic Motor, Canon's name for an ultrasonic motor.
VR - Vibration Reduction in Nikon lenses.
WB - White Balance.
XMP - Extensible Metadata Platform.

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