OTF

OTF is a three-character combination that may refer to:

• The OpenType standard for digital typography, which uses font files with the file extension .otf
• Optical transfer function
• "Off-The-Film", a camera metering system in which the reading is taken directly at (or from) the focal plane. See also Through-the-lens metering
• On the fly, or procedural generation
• Ontario Teachers' Federation
• Ontario Trillium Foundation
• OTF knife
• Off Topic Forum, on internet forums and bulletin boards.
• The functional group, trifluoromethanesulfonate or simply triflate, represented by the symbol -OTf
• The informal nickname of the Islamic Azad University, Fars Science and Research Branch
• "OK To Forward" - a term used to designate an email that can be forwarded.
• Open Trace Format

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