Articles, tagged with "j wilson", page 2
The Concept of Pixels and Film Grain
The picture elements (pixels) of a digital image are usually arranged in a regular array of uniformly coloured squares as to be individually invisible. In film-based images, picture elements are sometimes randomly arranged grains or clouds of dye, also co...
Film-Based SLR Cameras
The single most important feature of the design of the single lens reflex (SLR) camera is that it allows you to view the subject through the actual picture-taking lens. This means that no matter what lens is attached to the camera - whether it is a 17mm u...
Understanding How to Choose the Best Lenses
The quality of the image projected by the camera's lens sets the upper limit of the image quality you obtain from your camera. If you have an inferior image - one that is not perfectly focused, for example - no increase in the number of pixels you employ ...
Camera Accessories - Exposure Meters & Tripods & Bags
Small items can make a big difference to how your camera handles and greatly improve the quality and scope of your photography.
Exposure meters
While almost all cameras made today have built-in exposure meters, some photographers still rely on hand-he...
Camera Accessories - Waterproofing, Power Packs & Digital Image Storage
Waterproofing
A waterproof camera housing is essential in situations such as shooting from a canoe or when sailing - not just if total immersion is likely.
Power packs
The power capacity in cameras and flash units is necessarily a compromise between ...
The World of Sensor Technology
Practically all microprocessor and memory chips are sensitive to light and so are normally protected by light-tight covers. There are several varieties of CCD and CMOS devices used in digital cameras, and although they do not differ in the basic principle...
Different 3-Plus Megapixel Digital Cameras
3-Plus-Megapixel Model
- with a two-section body that allows the lens to be swivelled and excellent optical quality that is outstanding close-up, this camera has become a popular choice.
- when choosing a camera, test all its features - this main swit...
SLR Digital Cameras
The single lens reflex (SLR) design, in which the lens that projects the image for recording is the same as that used to view and focus the subject, is the most versatile available. With digital cameras, however, there are now two different types of SLR. ...
Studio Digital Camera & Accessories
Professional studio model - MegaVision S3 Pro
- This 6-megapixel digital back is available to fit most medium-format cameras. For location work, the back can be tethered to a power pack with disk drive.
- Digital backs allow medium-format cameras to be ...
Random Camera Accessories
Combined exposure meter
- professional exposure meters can measure flash as well as ambient light and accept a range of accessories.
Spot meter
- for the most precise measurement of light a hand-held spot meter is needed.
Simple meter
- a simple ...
1 2