| TWAIN | TWAIN is a standard for image input devices, such as scanners and digital cameras. |
| TV sync | The sync. signals are in the form of electrical pulses, which are added to the video (picture) signal. |
| TV standards | TV signals vary depending on where you are in the World. This makes equipment non compatible. |
| TTL metering | Through The Lens metering. The basic method for determining photographic exposure is to measure the intensity of the ambient lighting and choose camera settings accordingly. It can apply to both flash and ambient light readings. |
| TTL Flash | Through The Lens flash metering. |
| TTL | Through The Lens. A term applied to viewfinders and metering systems that operate behind the lens. As such TTL is accurate because it sees what the lens sees. |
| Tromboning | The tendency to over-use zoom |
| Tray | The metal plate or bar which screws to the bottom of a camera or housing so that a supporting arm for a flash unit or lamp may be attached to it. Also refers to the metal or plastic plate on which a camera sits inside an underwater housing. |
| Transparent | Allowing light to pass through |
| Transition | Leads the viewer from one scene to another |
| Tracking | the process of creating an equal amount of spacing across a range of letters |
| Torn Edges | Is particularly useful for images consisting of text or high-contrast objects. The filter reconstructs the image as ragged, torn pieces of paper, and then colorizes the image using the foreground and background colors. |
| toolbar | A special dialog that is (usually) always visible containing editing tools. It appears (by default) floating screen left |
| toning tools | consist of the dodge tool and the burn tool. Used to lighten or darken areas of the image, dodge tools are based on a traditional photographer's technique for regulating exposure on specific areas of a print. |
| Title | Words or numbers that appear in the video |
| Time-base corrector | To reduce or eliminate errors caused by mechanical instability present in analog recordings |
| Time Code | A sequence of numeric codes generated at regular intervals by a timing system. |
| Tilt | To change the camera angle |
| TIFF | The Tagged-Image File Format (TIF) is a bitmap format extensively used to exchange files between applications and computer platforms. It is found in most paint, imaging and DTP programs. TIFF is a lossless full-color image file format. |
| Thumbnail | These are low resolution copies of an image stored inside the image in order to display quickly. Some digital cameras and photo applications, including Windows Explorer, use them to display images in digital contact sheets. |
| TFT | Thin Film Transistor |
| Temperate Waters | Seas with green water well north or south of tropical zones typically cold enough for drysuits! |
| Telephoto lens | Gives a close-up view of distant subjects |
| TBC | TimeBase Corrector |
| Target Light | A light, usually built into an underwater flash unit, used to give an accurate indication of the direction in which the flash unit is pointing. |
| Take | To videotape a shot |
| tagged | By default, a tagged document will have its profile information embedded upon saving in a file format that supports embedded ICC profiles. Untagged documents are saved by default without embedded profiles. |
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