Posts Tagged ‘Explained’

Digital Cameras – Memory Cards Explained

Memory cards are used by digital cameras to store photos and video clips. In this sense they accomplish the same role as film in a original film camera. There are many distinct types of memory card available. You need to be true when buying a memory card to make sure it is compatible with your camera.

The capacity of a memory card is measured in megabytes (Mb) and Gigabytes (Gb). The number of photos you can store on a memory card depends on the number of megapixels your digital camera has. The more megapixels the lower the number of images you will be able to store.

To give you a very rough idea of capacity a 1Gb card can hold 400 photos taken with a five megapixel camera, 335 with a six megapixel model and 280 with a seven megapixel camera.

A memory card is not all the time supplied with a new digital camera. This is because more and more cameras are being made with small amounts of memory built into them. Typically you will be able to store between five and twenty photos on the card that comes with the camera or in the internal memory. Therefore before you are able to do any serious photograph taking you will need to buy a card with a higher capacity,

Most digital cameras are only compatible with one type of card. Others can use two, three or even four distinct types of card.

The most coarse type of card used in buyer level digital cameras is now the Sd card. This type of card can also be referred to by its full name, derive Digital. There are two reasons for the growth in popularity of the Sd card. The first is its relatively small size (30mm x 22mm approx). The second is it is capable of storing large numbers of photos. The Sd card is ordinarily found in Canon, Casio, Kodak, Nikon, Panasonic and Pentax digital cameras.

Olympus and Fuji have worked together to furnish the xD card. These cards are smaller than Sd cards (25mm x 20mm). All current Olympus and Fuji buyer level digital cameras use the xD card to store photos on. There are three types of xD card. These are the H card, M card and a standard card that comes without a letter. The standard card was the original xD card. The two newer types were introduced because they could hold larger numbers of photos. The H card is a higher speed card. This means photos can be stored more quickly on the card. This can growth the speed at which the camera is ready to take the next shot. The M card and the standard card are both normal speed cards.

Sony have their own type of memory card. This is known as Memory Stick. There are two types of Memory Stick. One is original Memory Stick. This is colse to 50mm x 20mm in size. More recently smaller Memory Stick Duo cards have made their mark. These have dimensions of 30mm x 20mm and are also thinner than the original Memory Stick. Memory Stick Duo cards are now being used as the card of choice by Sony in their digital cameras.

Previously CompactFlash cards were the most coarse type of memory card. Their large size (42mm x 36mm) has counted against them and they are now only found in a handful of the most industrialized digital cameras.

Points to keep in mind when buying a memory card include the fact that you can buy high speed cards and that there may be a maximum capacity card that your camera is compatible with. Although a high speed cards may sound like a good idea it is quite potential that unless your camera is an industrialized model it will not be able to utilize the higher speed capabilities of a fast card. This is because of limitations of the technology within the camera itself. Before you go out and buy a 4Gb card check with your constructor that your camera is capable of working with such a high capacity card.

With regard to brands I happily use cards from Sandisk, Lexar and Kingston.

separate Digital Camera Types Explained

If you’re finding to buy a digital camera, you probably have problems choosing on one. If you don’t know what to look for in a camera, it can be hard selecting one. Here we will talk about five types of cameras, each used for a dissimilar purpose.

The five camera types that you can pick from are subcompact digital camera, Slr cameras, compacts, super-zoom cameras and industrialized compacts.

If you want something to use each day, you should go with a compact digital camera. These cameras can be used with success during vacations or parties. They don’t have too many options to pick from, so they’re easy to use. Point and shoot cameras like these have a price tag in the middle of 0 and 0 usually.

A subcompact is de facto carried around, and that’s its main advantage. You can put the subcompact digital camera in a tote bag or in a general purse. It’s light enough that you don’t feel it when you carry it around. The options that come with these cameras are not great, so you shouldn’t buy one if you need something complex. You get great ability than a compact can offer you, but it also costs a bit more, commonly in the middle of 0 and 0.

Above the compacts and the subcompacts, sits the industrialized compact camera, which is a bit heavy and large, so not exactly something you want to carry with you on your trips. This type of model should be used when you know you’re going somewhere where you can photograph great views. If you want to photograph a sunset or something that’s in a room without much light, an industrialized compact camera will do well. The price varies in the middle of 0 and 0.

If you want take travel, nature or spots photographs, you should probably pick a super zoom digital camera. The good telephoto setting and the long zoom recommends this camera for such photos. The disadvantage is that these cameras are heavier, bulkier and larger than a general compact model. The price varies in the middle of 0 and 0.

Digital Camera and Photography Terms Explained

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 construe in a simple way.

Ae Lock. This means Auto Exposure Lock and means that you can point to your field matter, get a light reading, then swing the camera to set up the perfect picture, still retaining that setting.

Aperture. Size of the changeable chance in the lens that controls the estimate of light that passes straight through the lens to the sensor (Ccd) and which is regularly 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 aperture for the depth of field they want and the camera sets the shutter speed to gather precise 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 dissimilarity on this and batteries are not regularly interchangeable between 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. Gismo that is used to associate the computer with your memory card

Ccd or expensed coupled device. This refers to the chip inside the camera which is used to record 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 dissimilarity between the lightest and darkest part of a photo.

Depth of Field. The length between the nearest point and farthest point, that is sharp and in focus. This varies with aperture setting. A small aperture will give greater depth of field than a large aperture.

Digital Zoom. Some cameras will provide digital zoom which assuredly 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 aperture is.

Exif. The exchangeable image file. This is used by cameras to record 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 straight through shutter speed and aperture is important to serious photographers. Economy 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 estimate of memory. This is the most coarse ideas 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 ultimate close-ups.

Manual mode. This is found on top end cameras and is used by experienced photographers as this gives full control over shutter speed and aperture.

Megapixel. This is a million pixels and can review the sensor’s capacity. Megapixels define the potential 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 review the whole family of Memory Sticks.

Optical zoom. This is a true zoom that brings you closer to the field without consuming by magnifying the image. It is preferable and excellent 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 construction block of a digital image and can have color and tone.

There can be some 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 measure 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 regularly 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 aperture priority.

The photographer chooses the shutter speed and the camera sets the precise aperture for the conditions.

Useful for action shots or the need to blur shots.

Slr. Singular 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 industrialized for use in conveyable 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 potential when it is saved and compressed.

Tripod. If you are taking scenery or portrait photos a tripod is principal for clear, sharp photos in order to sell out camera shake and confusion of images.

Usb. Universal Serial Bus. This is a proper interface on all computers that allows accessories to be connected to the computer while it is turned on.

I hope this is useful!