You want to buy a new digital camera but you wonder what all these abbreviations and strange terms are and what do they mean? Here are a few which I have tried to expound in a simple way.
Ae Lock. This means Auto Exposure Lock and means that you can point to your subject matter, get a light reading, then swing the camera to set up the faultless picture, still retaining that setting.
Camera
Aperture. Size of the changeable chance in the lens that controls the whole of light that passes through the lens to the sensor (Ccd) and which is ordinarily expressed as an f/number.The higher the f/number the smaller aperture, and the lower the f/number the larger the aperture. Also controls depth of field.
Aperture Priority. This is a semi-manual setting in some cameras. The user sets the gap ,break for the depth of field they want and the camera sets the shutter speed to gather strict exposure.
Auto Focus. Most digital cameras have an auto-focus mode which focuses the lens
Battery. Cameras come with separate types of batteries which power the camera. Each constructor tends to have their own variation on this and batteries are not ordinarily interchangeable in the middle of cameras.
Bracketing. Bracketing shots is where a photographer takes shots of the same scene three times or more at separate exposures. This can be done automatically on some cameras.
Card reader. Gadget that is used to associate the computer with your memory card
Ccd or charged coupled device. This refers to the chip inside the camera which is used to description image information (on a non-digital camera this would be the film).
Light hits the Ccd when a photo is taken, and then the analog Ccd converts the information to digital.
Contrast. This is the variation in the middle of the lightest and darkest part of a photo.
Depth of Field. The length in the middle of the nearest point and farthest point, that is sharp and in focus. This varies with gap ,break setting. A small gap ,break will give greater depth of field than a large aperture.
Digital Zoom. Some cameras will supply digital zoom which honestly means that it "zooms" into the town part of the image and enlarges the pixels. This causes " noise" or poor resolution. Visual zoom is far superior.
Dpi Dots per inch. Printers define the sharpness of an image by Dpi. A outline of 1200 dpi, or higher is required for printing photographs.
Exposure. Exposure is a blend of how long the shutter is open and how wide the gap ,break is.
Exif. The exchangeable image file. This is used by cameras to description data of a shot such as date, time taken, exposure etc which can be read sometimes in the camera or in software. This is beneficial for knowing what was happening when a photograph was taken.
Exposure Control. Controlling exposure settings through shutter speed and gap ,break is foremost to serious photographers. Cheaper digital cameras will only shoot in auto mode. If you feel that you might want to take photography more seriously at some point this needs to be considered.
Focal length.Focal length describes the magnification of the lens. The greater the focal length, the greater the magnification.
F-Stop (or f/number or stop). The size of the chance in the diaphragm which allows light into the camera
Histogram.A histogram is a graph which shows image tones or a graph of brightness. Can be used to check exposure of a shot to see if you need to adjust and shoot again.
Jpeg (Joint Photographic Experts Group). A format, that that allows the camera to squeeze a large photograph into a small whole of memory. This is the most common principles used by digital cameras
Lcd Liquid Crystal Display. The majority of digital cameras have a screen at the back of the camera which can be used for viewing shots taken or sometimes as a viewfinder. A heavy user of battery power!
Macro.This is the camera mode for taking extreme close-ups.
Manual mode. This is found on top end cameras and is used by experienced photographers as this gives full operate over shutter speed and aperture.
Megapixel. This is a million pixels and can recap the sensor's capacity. Megapixels define the ability of your image. More megapixels means a better and sharper photograph or that it can be enlarged without losing quality.
Memory Card.The majority of digital cameras store pictures taken onto memory cards which can be removed and the pictures transferred to your computer. Cards are of discrete shapes and sizes but all do the same job.
Memory Stick. Memory Stick is a removable flash memory card format, launched by Sony in October 1998 and is also used in normal to recap the whole house of Memory Sticks.
Optical zoom. This is a true zoom that brings you closer to the subject without arresting by magnifying the image. It is preferable and classic to digital zoom. It is recommended to get at least 3x Visual zoom.
Pictbridge. Pictbridge is a proper technology that allows the exchange of images direct from a camera to a compliant printer, bypassing the computer.
Pixels. A pixel, meaning photograph element, is the base component or building block of a digital image and can have color and tone.
There can be several million "building blocks" in an image.
Raw .The name is to recognize the virtually raw data (has had no internal processing by the camera) image file format.
Resolution. A quantum of an image expressed as photograph size or pixel (megapixel) size or dots per inch on a printed image i.e. The more pixels there are in an image the sharper the photograph will be. This is ordinarily shown as, for example, 1200 x 1800 which relates to height and width.
Shutter priority. This is a semi-manual mode and the opposite of gap ,break priority.
The photographer chooses the shutter speed and the camera sets the strict gap ,break for the conditions.
Useful for action shots or the need to blur shots.
Slr. Particular Lens Reflex is a camera which has a mirror that reflects the image onto a pentaprism and then on to the viewfinder screen. This means you see what the camera sees and is beneficial for framing your shots accurately.
The mirror reflexes out of the way when you take the picture.
Secure Digital (Sd) is a flash memory card format developed for use in portable devices.
Sensor or Ccd.An electronic chip, or light sensor which contains light- sensitive pixels and which records the image when you take a picture.
Shutter Speed. Speed of the shutter as it opens and close to allow light onto the sensor. It is expressed in fractions of a second i.e.1/60, 1/250
Tiff Tagged Image File Format. Tiff is an image file format that does not lose any ability when it is saved and compressed.
Tripod. If you are taking landscape or portrait photos a tripod is indispensable for clear, sharp photos in order to cut camera shake and confusion of images.
Usb. Universal Serial Bus. This is a proper interface on all computers that allows accessories to be linked to the computer while it is turned on.
I hope this is useful!
Digital Camera and Photography Terms Explained
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