Abbreviation
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Possible Translation(s) Translations Help ? |
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AF |
- Auto Focus (cameras and photo, Lenses/cameras and photo, Canon/cameras and photo, Nikon/cameras and photo, Film Based Cameras/cameras and photo, Flashes - a series of lenses Canon and Nikon)

- Abercrombie & Fitch (clothing, Brands and Lines/clothing, Beginning with A/health and beauty, Fragrances/health and beauty, By Brands and Lines - an American clothing and fragrance retailer, see also A&F)
- Air Force (collectibles, Militaria/collectibles, Air Force - a branch of a nation's armed services that conducts military operations in the air)
- Auxiliary Freight (collectibles, Militaria/collectibles, Boats and Ships - a classification prefix code for U.S. Navy ships)
- American Flyer (toys, Trains/toys, Suppliers and Manufacturers - a brand of toy trains in the middle part of the 20th century)
- Authentic Fabrics (sports, Sports Cards/sports, General Card Types - a sports card series, used as a prefix code for cards)
- [About/Almost] Fine (other, General Grades/coins, Grades and grading/coins, Beginning with A - a coin grade, sometimes seen as 'aF')
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AFD |
- Auto Focus Distance (cameras and photo, Lenses/cameras and photo, Nikon - a series of lenses by Nikon, see also AF-D)
- Arc Form Drive (cameras and photo, Lenses/cameras and photo, Canon - a series of lenses by Canon)

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AL |
- Aspheric Lens (cameras and photo, Lenses/cameras and photo, Pentax/cameras and photo, Canon - a series of lenses by Pentax and Canon)

- Alabama (other, States/antiques, Maps)
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APO |
- Apochromatic (cameras and photo, Lenses/cameras and photo, Canon/cameras and photo, Sigma - a line of lenses by Canon and Sigma)

- [Army/Air-force] Post Office (stamps, Cancellation Types/collectibles, Postcards/other, Payment and Shipping - a Post Office under the control of the Army/Air-force)
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ASP |
- Acceleration, Speed, Performance (toys, Radio Controlled/toys, RC Manufacturers - an RC engine manufacturer)
- Assault System Pod (toys, GI Joe/toys, Vehicles and Weapons - referring to the 'Cobra ASP', a flying Cobra attack weapon)
- Armament Systems and Procedures (business and industrial, Industrial Supply/business and industrial, Government and Public Safety - a baton and cuff manufacturer, see [ www.asp-net.com
])
- Active Server Pages (books, Computers - a server-side scripting language for creating web pages)
- Aspherical (cameras and photo, Lenses/cameras and photo, Canon/cameras and photo, Sigma/cameras and photo, Nikon - a series of lenses by Canon, Sigma, and Nikon)

- Average Sell Price (other, Miscellaneous - the price at which items sell on average)
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DO |
- Diffractive Optics (cameras and photo, Lenses/cameras and photo, Canon - a series of lenses by Canon)
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EF |
- Electronic Focus (cameras and photo, Lenses/cameras and photo, Canon - the standard lens mount on the Canon EOS family of SLR film and digital cameras, see also EFS)

- Extra Fine (collectibles, Pens and Writing Instruments - refers to writing pens with an extra fine nib)
- Ephedrine Free (health and beauty, Dietary Supplements and Drinks/health and beauty, Miscellaneous - refers to supplements that do not contain ephedrine)
- Eurofighter (video games, Titles - referring to EF2000, a 1995 combat flight simulation video game)
- [Extra/Extremely/Exceptionally] Fine (other, General Grades/coins, Grades and grading/coins, Beginning with E - a coin grade, see also EF40, EF45, and XF/stamps, Gum Conditions and Grades/stamps, Beginning with E - centering will be off in one or two directions, see also XF)
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EFS |
- Electronic Focus - Short (cameras and photo, Lenses/cameras and photo, Canon - a type of lens by Canon, see also EF-S)
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EF-S |
- Electronic Focus - Short (cameras and photo, Lenses/cameras and photo, Canon - a type of lens by Canon)
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EOS |
- Electro-Optical System (cameras and photo, Digital Cameras/cameras and photo, Lenses/cameras and photo, Canon/cameras and photo, Filters - family of SLR film and digital cameras by Canon)
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EX |
- Excellence (cameras and photo, Lenses/cameras and photo, Canon/cameras and photo, Sigma - a line of Canon compatible lenses by Sigma)

- Excellent (other, General Grades - as in EX-MT and VG-EX)
- Extra (other, Miscellaneous)
- Extremely (other, Miscellaneous)
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IF |
- Internally Flawless (jewelry, Clarity Grades - highest quality level - but one grade lower than FL, no inclusions and only insignificant blemishes on the surface under 10x magnification)
- Internal [Focus/Focusing] (cameras and photo, Lenses/cameras and photo, Canon/cameras and photo, Nikon/cameras and photo, Sigma - a type of lens by Canon, Nikon, and Sigma)

- Intermediate Frequency (consumer electronics, Radios - a type of carrier transmission)
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IS |
- Image Stabilization (cameras and photo, Lenses/cameras and photo, Canon - lenses for the 1995 Canon 35mm camera)

- Intelligent Sport (motor vehicles, Vehicles By Make/motor vehicles, Toyota - referring to the 'Lexus IS' series)
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MP-E |
- Macro Photo - Electronic (cameras and photo, Lenses/cameras and photo, Canon - a series of lens by Canon)
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OS |
- [One/Over] Sized (clothing, Sizes - One: see OSFA and OSFM, Over: see XL)
- Operating System (computers and networking, Software/computers and networking, Desktops and Laptops - a set of programs that manage computer hardware resources and provide common services for application software)
- Oversized (sports, Golf Gear/sports, Clubs By Dexterity - clubs designed for people with large hands or who have arthritis)
- Official Service (stamps, By Area or Country/stamps, Australia - referring to the overprints and/or perfins that were applied to stamps on official mail in Australia)
- Oversize (home and garden, Bedding - a comforter/bedding that is larger than usual to provide more room or coverage/sports, Tennis and Racquet Sports - a racquet designed for people with large hands or who have arthritis)
- Optical [Stabilization/Stabilizer] (cameras and photo, Lenses/cameras and photo, Canon/cameras and photo, Sigma - a system by Canon and Sigma that stabilizes the image by varying the optical path to the sensor)

- One Sheet (entertainment memorabilia, Lobby Cards and Posters - 27 inches by 41 inches in size before 1985, 27 inches by 40 inches in size after 1985. See also 1SH)
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