But the ability of the digital guts of the camera to compensate has improved remarkably, and so some action shots come out pretty well.ĥ) Beware of salesmen claiming a camera has "no interpolation." Interpolation is an electronic method of blurring the lines between the sensors by a mathematical algorithm, which reads the colour and intensity of the light nearest the gap and "fills in" the lines by guessing at the appropriate colours.
#Mgi photosuite 4 lessons iso#
More expensive models have pushed it to 800 ISO by jamming the sensors in the CCD closer together, but the closeness is limited by our current grasp of physics and the limits of technology as we know it. Most digital cameras have a sensitivity equivalent to about 100 to 200 ISO, about the same as standard outdoor film. Currently, a camera with a value of two megapixels (two million pixels) or more will deliver a satisfying family snapshot.Ĥ) You no longer think in terms of a film's sensitivity to light (what was once called the ASA or ISO rating). True, but the physics of the system gets wonky shortly after most cameras' ability to satisfy the home photographer. Hence a sharper picture.ģ) The higher the "megapixel" value of the camera, the better. This, they say, has the effect of fooling the eye into not seeing the gaps. Instead, Fujifilm made the individual sensors octagonal, so whatever "lines" were created by the gaps between sensors became diagonal, and jagged at that. Arguing that the human eye is very sensitive to horizontal lines and slightly less sensitive to vertical lines, Fujifilm sought to improve picture quality by throwing out the grid of rectangular sensors, which had distinct black lines running across and down between the sensors on the array. Fujifilm started backing away from the more-is-better model recently. The more sensors, the higher the resolution or sharpness of the picture.īut this is not the entire picture. Light falls on the CCD's gridwork, or array, of tiny sensors and is broken up into points of light according to the number of sensors on the CCD. This will take a while, though the interface is not yet ready.Ģ) The more pixels, the better the image.
They'll be able to take digital images from a camera and print them onto photo-quality paper with a laser system, a process described as stunning by its promoters. Photo-finishing stores will soon start installing digital image interfaces on one-hour photo processing machines. The other is CCD (charge coupled device), a light-sensitive integrated circuit made by only five manufacturers in the world (Fujifilm, JVC and Toshiba among them), but is found in almost every consumer camera being sold.Īlthough there's no film in a digital camera, you can print satisfactory images at home with a desktop colour printer. One is called a CMOS (complementary metal-oxide semiconductor), which is no longer used in consumer cameras the quality proved to be too poor for home use and the system is now limited to industrial use.
#Mgi photosuite 4 lessons how to#
Yet it's difficult to decide which camera to buy and how to make them work properly without this knowledge.ġ) There is no film in a digital camera, only a sensor that receives light and translates the light into digital form. With the price of colour printers falling rapidly, a home-imaging system is now commonplace.īut what's really happening under the hood? The desire of manufacturers to press point-and-shoot cameras into the hands of millions of people, a sales technique pioneered by Kodak when it released the first Brownie film camera in February, 1900 (at a price of $1), hides the mysteries of the technology. The pictures it produced were 640-by-480 pixels, crude photos that could not be blown up to more than what we once called "wallet-size" photos.Ĭameras have improved greatly in the following years, and now home digital photography is one of the fastest-growing pastimes. It was a tiny Kodak, basically a point-and shoot box. The first digital camera I ever used was in 1995.
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