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Lesson Two: Introduction to digital cameras.

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pixelsDigital photos are made up of small picture elements.
dpi - dots per inchIs a measure of how a printer prints an image.
ppi - points per inchIs a measure of how a monitor displays an image.
Pixel dimensionsThe resolution of an image is measured by the images
Megapixel rating calculatedBy multiplying the width and height pixel count of the images produced by the camera.
Function of the LCDTo display the image seen through the camera's lens.
Drawback optical view finderParallax, the viewfinder shows a slight different image than what is seen through the lens.
Benefits of electronic viewfinderIt displays exactly what is seen through the camera lens.
OSD - On Screen DisplayInformation about the digital camera's settings displayed on the LDC.
The 4 primary types of digital cameras on the market.Ultra compact, Compact, Advanced, and DSLR
DSLRUsed by professionals on the upper end of the price scale.
Ultra compact digital cameraIs inexpensive and usually small enough to be carried in a shirt pocket.
4 points that impact the quality if a photoQuality, Pixel size, format of the image, proficiency of the photographer
Rule of ThirdsImage is divided into 9 equal parts, four intercepting points can be used to align the focal point of an image.
Three types of focusFixed focus, auto focus, manual focus
Optical zoomUses the camera's optic to magnify the image. Producers higher quality image.
Digital zoomCrops your image and magnifies the result of the cropping.
To improve an image you canAdjust the color, brightness, and contrast levels
Why would you want to resize a photoCamera produce large images, it may be difficult to download.
CroppingThe process of trimming, or cutting away, unwanted areas.


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