As we think about the digital camera
revolution that has taken place over the last decade, most people
consider it in terms of superior benefits. You can take numerous
pictures at much lower cost with a digital versus a movie camera. You
can also easily take and distribute those photos since they're digital
and can be uploaded immediately to social sharing websites and personal
blogs.
Once compared with a movie camera, digital cameras can do things its competitor can't such as:
• Displaying images on a screen immediately after they are recorded
• Storing thousands of images on a single small memory device
• Recording video with sound and
• Deleting images to free storage space.
Some can crop pictures and execute other elementary image editing. The optical system works the same as in film cameras, typically using a lens with a diaphragm to focus light onto an image pickup device. The diaphragm and shutter declare the correct amount of light to the imager, just as with film but the image pickup device is electronic rather than chemical. Digital cameras are integrated into many devices ranging from PDAs and mobile phones to vehicles.
Types of Digital Cameras:
Digital cameras come to suit a wide range of prices, sizes and capabilities. The majority are camera phones, operated as a mobile application through the cell phone menu. Professional photographers and many amateurs use larger, more luxurious digital single-lens reflex cameras (DSLR) for their larger versatility. Between these extremes lie digital compact cameras and bridge digital cameras that "bridge" the gap between amateur and professional cameras. Particular cameras including multispectral imaging utensils and astrographs continue to serve the scientific, military, medical and other special purposes for which digital photography was invented.
Bridge cameras are higher-end digital cameras that physically and ergonomically resemble DSLRs and share with them some highly developed features, but share with compacts the use of a fixed lens and a small sensor. Like compacts, nearly everyone uses live preview to enclose the reflection. Their autofocus utilises the same contrast-detect mechanism, but many bridge cameras have a manual focus mode for greater control. Due to the amalgamation of a bigger physical size but a small sensor, most of these cameras have very highly specified lenses with large zoom range and fast aperture, partially compensating for the lack of ability to change lenses. To compensate for the lesser sensitivity of their small sensors, these cameras almost always consist of an image stabilization system to enable longer handheld exposures. The longest lens so far on a bridge camera is on the Canon Power Shot SX30 IS digital camera, which encompasses an equivalent of 24-840 mm (35x).
Once compared with a movie camera, digital cameras can do things its competitor can't such as:
• Displaying images on a screen immediately after they are recorded
• Storing thousands of images on a single small memory device
• Recording video with sound and
• Deleting images to free storage space.
Some can crop pictures and execute other elementary image editing. The optical system works the same as in film cameras, typically using a lens with a diaphragm to focus light onto an image pickup device. The diaphragm and shutter declare the correct amount of light to the imager, just as with film but the image pickup device is electronic rather than chemical. Digital cameras are integrated into many devices ranging from PDAs and mobile phones to vehicles.
Types of Digital Cameras:
Digital cameras come to suit a wide range of prices, sizes and capabilities. The majority are camera phones, operated as a mobile application through the cell phone menu. Professional photographers and many amateurs use larger, more luxurious digital single-lens reflex cameras (DSLR) for their larger versatility. Between these extremes lie digital compact cameras and bridge digital cameras that "bridge" the gap between amateur and professional cameras. Particular cameras including multispectral imaging utensils and astrographs continue to serve the scientific, military, medical and other special purposes for which digital photography was invented.
Bridge cameras are higher-end digital cameras that physically and ergonomically resemble DSLRs and share with them some highly developed features, but share with compacts the use of a fixed lens and a small sensor. Like compacts, nearly everyone uses live preview to enclose the reflection. Their autofocus utilises the same contrast-detect mechanism, but many bridge cameras have a manual focus mode for greater control. Due to the amalgamation of a bigger physical size but a small sensor, most of these cameras have very highly specified lenses with large zoom range and fast aperture, partially compensating for the lack of ability to change lenses. To compensate for the lesser sensitivity of their small sensors, these cameras almost always consist of an image stabilization system to enable longer handheld exposures. The longest lens so far on a bridge camera is on the Canon Power Shot SX30 IS digital camera, which encompasses an equivalent of 24-840 mm (35x).
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