HarveyG Photography

Acronyms and Terms used throughout the site:

°C = Degrees Centigrade
°F = Degrees Fahrenheit
∞ = Infinity
⌀ = Diameter (Also “∅”)
© = Copyright
™ = Trademark
AF = Automatic Focus
AL = Ambient Light (natural light in a scene)
AOV = Angle of View measured in ° (Degrees) of the lens.
APO = In order to attain the highest quality images, the APO lens has been made using special low-dispersion (SLD) glass and is designed to minimize color aberration.
ASA = American Standards Association (film speed rating)
Bokeh = Japanese Term now commonly used for a clean uncluttered OOF background.
CA = Chromatic Aberration
CCD = Charge-coupled device (camera sensor)
CF = Compact flash (memory card)
CMOS = Complementary metal-oxide-semiconductor (camera sensor)
D&P = Developing and printing (or ‘D & P’ or ‘D and P’)
DC = These are dedicated Sigma digital SLR camera lenses with an image circle designed to suit image sensors that correspond to APS-C (small frame) size
DG = Sigma’s large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs.
DPI = Dots per Inch
DOF = Depth of Field
DSLR = Digital Single Lens Reflex
DX = Nikon’s designation for small frame APS-C sensors
DZ = Digital Zoom
EV = Exposure Value
EX = Sigma’s lens exterior is EX-finished to denote superior build, optical quality and to enhance appearance.
FC = Framed Correctly
FL = Focal Length (of an optical system is a measure of how strongly the system converges (focuses) or diverges (defocuses) light)
FX = Nikon’s designation for fullframe CMOS sensors
HSM = Sigma’s Hyper-Sonic Motor. This lens uses a motor driven by ultrasonic waves to provide a quiet, highspeed AF.
ID = Inner Diameter
IMO = In my opinion
IMHO = In my honest opinion
IMNSHO = In my not so honest opinion
IR = Infra Red or Image Resolution
IS = Canon’s term for Internal (image) stabilisation (in the lens)
ISO = International Organization for Standardization
KNP = Kruger National Park
LCD = Liquid Crystal Display
LED = Light Emitting Diode
Li-ion = Lithium Ion (rechargeable battery)
MD = Minolta’s Manual Focus bayonet mount
MF = Manual Focus
MP = Megapixel (Sometimes Mp) Equal to 1 million pixels
MTF = Modulation Transfer Function
NiMH = Nickel Metal-Hydride (rechargeable battery)
NR = Noise Reduction
O/L = Overall Length
OD = Outer diameter
OE = Overexposed
OOF = Out of Focus
OZ = Optical Zoom
PP = Post Processing
PS = Photoshop
Px = Pixels
SD = Secure Digital (up to 2Gb)
SDHC = Secure Digital High Capacity (above 2Gb)
SFW = Saved for Web
SL = Shutter Lag
SLR = Single Lens Reflex
s/s = Shutter Speed
TFT = Thin-film Transistor
TTL = Through the lens
UE = Underexposed
USM = Unsharp Mask
UV = Ultra Violet
VR = Nikon’s (in-lens) Vibration Reduction feature
WHU – What have you

This is by no means a comprehensive acronym list and is thus being expanded as time allows.
Text and images on this website © HarveyG Photography. Use of which is strictly forbidden without written consent of the author.
Names, brands and technical data referred to are the © or ™ of their respective owners and/or companies.