| Full Range Autofocus Lens | A lens that, whilst in autofocus mode, allows focusing from less than a inch to infinity |
| FTP software | File Transfer Protocol software is used for uploading and downloading files over the Internet |
| F-Stop | Standard unit of exposure. A means of expressing the illuminating power of a lens regardless of its focal length. |
| freeware | software that is free! But watch out! The author may time limit it's use by time, especially if it is a demo version of a larger program |
| Frame | The picture area |
| FPX | The FlashPix file format was developed through the combined efforts of Kodak, Microsoft Corporation, Hewlett-Packard, and Live Pictur. It combines the best features of existing formats with object orientation to make the use of digital color images easier. The format of a FlashPix file is based on compound object storage, which allows storage of various kinds of data." |
| FPS | Frames per second. The number of images that can be recorded per second as determined by the limitations of motordrive (35mm) or buffer (Digicams). |
| Format | The 'format' of a film or camera is the dimensions of the image area (or frame). |
| Focus Range | The difference between the closest and farthest distances a lens can focus on. |
| Focal Length Multiplier | The Focal Length Multiplier is a figure to apply to 35mm lenses to calculate their true focal length on digital cameras that do not have full frame sensors. |
| Focal Length | The focal length of a simple symmetrical lens, is the distance between the image plane (e.g. the film) and the middle of the lens, when light from infinity is brought to a focus. |
| Flying Erase Heads | Spinning magnetic heads that allows you to start then pause then start recording again without causing any video noise, distortion etc. |
| Flat Port | A flat glass or plastic port that fits onto the front of the video housing |
| flash/blur | shots where long exposures are mixed with flash |
| Flare | Flare is unwanted streaks of light on your photos caused by lens imperfections and/or pointing the camera at the light source. |
| Fisheye | Extreme wide angle lenses sometimes with 180° angle of view across the diagonal and a typical focal length less than 15mm (on the 35mm system). |
| Firmware | An often-used micro program or instruction set stored in ROM. Usually refers to the ROM-based software that controls a unit. Firmware is found in all computer based products from Cameras to Digital Peripherals |
| Firewire | Digital video interface (connection between camera and editing equipment, monitor, computer, etc.) specified in document IEEE 1394. Data transfer speed up to 400Mbit/s. |
| Filters | Are image processing actions that can be automatically applied to your image and which result in a particular effect. In this respect they are like preset special effects. |
| Filter | A device (usually a sheet of glass or plastic) which attenuates (reduces) all or part of the light passing through it. |
| Filmstrip | this format is used for RGB animation or movie files created by Adobe Premiere®. If you resize, resample, remove alpha channels, or change the color mode or file format of a Filmstrip file in Photoshop, you won't be able to save it back to Filmstrip format. |
| film speed | Film speed is the measure of a photographic film's sensitivity to light |
| Fill | a second flashgun should be used to fill-in the shadows caused by the main strobe and should therefore be less powerful |
| File Type | Many different 'flavors' of image file exist. They are distinguished by the file extension e.g. TIF and by the description seen in explorer view e.g. Tagged Image Format (for TIF) |
| File Size | The size of a file expressed in bytes or in pixels (e.g. 6Mb or 4256 x 2848). |
| Feather | Feathering is the process of blurring edges around a selection. Blurring the edges helps the selection blend into another object, file, or selection when it is moved, cut, copied, and/or pasted. |
| Fade | The Fade command appears in the Edit menu after a filter has been applied and allows you to change the blending options for that filter. The Fade command also appears after using a painting tool, using an eraser, or making a color adjustment. The Fade dialog box has two options: changing the opacity and changing the blending mode. |
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