| T |
| T - Time (exposure): : |
| Camera setting that holds the shutter open until shutter release is pressed a second time. |
| TELEPHOTO LENS: : |
Telephoto is actually a technical term for a certain type of lens construction. However, most people today use the term to refer to lenses with 70mm or longer focal lengths.
These are lenses bring the subject closer by magnifying the image on film. Shorter telephotos (70mm to 105mm) are ideal for portraiture, while longer telephotos (200mm and up) are favored by sports and wildlife photographers.
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| TIFF (Tagged Information File Format): : |
| An image format type.
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| TRANSPARENCY FILM: : |
| Sometimes referred to as slide film. Transparency film creates a positive image and requires different processing and printing methods than color print films. t is mostly used in professional applications. |
| TRIPOD: : |
| A three-legged device designed to hold cameras and camcorders steady. A steady camera helps produce unblurred images in low-light situations; when shooting closeup subjects or when using the self-timer for self-portraits. Tripods range from heavy-duty pro units that cost hundreds of dollars, to small pocketable tripods that cost a few dollars and easily fit in a camera bag or purse.
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| TWAIN: : |
| Communication protocol that allows imaging devices (scanners/digital cameras/image editing software programs) to communicate with each other. |
| TWIN LENS REFLEX (TLR): : |
| Camera type with separate viewing and taking lenses that are mechanically coupled for focusing. Reflex mirror redirects viewing-lens image to focusing screen atop camera. |
