Praxis Art Ch. 4: Digital Photography Processes
John took a picture of his orchids arranged in flower pots that he wants to post on his website. He noticed that one of the pots did not have a flower, so he wanted to add a flower from the other pot. What would be the best tool for this?
(Selection and) move tool
13 megapixels = _____ pixels.
13 million
A single byte can be used to represent _____ unique values.
256 (ex: gif files)
A digital photograph of 600 by 800 pixels has how many pixels total?
600x800=480,000
Leslie is making a photo album cataloging her bookshelf and her books. The photographs came out great, but some of the books have dust spots on them. What is the tool that Leslie can use to remove the dust spots from the photograph?
Airbrush tool
What part, within the lens of a camera, determines how much light to let in?
Aperture
Niepce coated his plates with _____, which reacted to light.
Asphaltum (n 1826 Niepce coated a pewter or copper plate with a photosensitive asphaltum and exposed the surface to bright sunlight through an etching of a portrait, which served as a positive image. Sunlight passing through the background of the etching hardened the asphaltum, while the protected areas, under the inked portion of the etching, were developed in oil of lavender and white petroleum to create an image in exposed metal. This image was then etched into the plate, and from the intaglio image, prints were made on a copperplate press.)
Which of the following has NOT been a use of the camera obscura (a darkened box with a convex lens or aperture for projecting the image of an external object onto a screen inside)?
Bird watching
Ann has a photograph of an exercise bike she wants to sell. She took the picture of her bike, but the picture also showed her garage. What tool can she use to get the picture of the bike by itself?
Crop tool
The Eastman Dry Plate Company changed photography by:
Developing rolls of paper film that could be used in any camera (The company, Kodak) began in the late 1800s)
What is the unit of the clock speed of the central processing unit (CPU) of a computer?
GHz (gigahertz. giga= factor of 10^9, hertz= the SI unit of frequency, equal to one cycle per second) A clock frequency, also known as a clock rate or clock speed, representing a cycle of time.
Which input device allows you to draw a digital image with the help of a pointed stylus or a mouse?
Graphics tablet
With respect to digital images, what is a TIFF?
It's a file format in which images aren't compressed, so it takes up more space.
Which of the following digital image file types should you use if you are more concerned with compatibility and small file size than with extremely high-quality images?
JPEG
What part of a camera uses specially shaped pieces of glass to bend light as needed?
Lens
Which of the follow file types used in digital photography was originally intended to replace the GIF file type?
PNG (PNG: milli colors, lossless compression. JPEG: milli colors, lossy compression. Gif: 256 colors)
Which two file types used in digital photography are best applied to images you are still in the process of editing?
PSD and RAW
Digital images are stored electronically and they're composed on many small dots of information. What are those dots called?
Pixels
Which of the following characteristics indicates the amount of detail in a raster (bitmap/dot matrix) graphic?
Resolution (number of pixels)
What kind of input device optically ''reads'' an image and translates it into digital signals that can be stored in a computer?
Scanner
What fast-moving part of a camera flips open and closed when we press the button to take a picture?
Shutter
Which file type used in digital photography offers the best blend of image-quality preservation with compatibility across software platforms?
TIFF (TIFF is a very adaptable format that allows for multiple pages in a single file, similar to a PDF document. TIFF also supports both lossless and lossy compression, allowing for each page to be compressed differently. Of all the image formats, this one is the best solution for digitizing workplace documents.)
A negative image is BEST described as one that has:
The light and dark reversed
What is photo editing?
The process of enhancing previously taken photographs that are saved in digital format
Points, lines, curves and shapes are used to create what type of illustrations?
Vector graphics
Which type of graphic is most commonly used in illustration software?
Vector graphics
You use a _____ to see what you are about to photograph.
Viewfinder
When you zoom into an illustration and you see individual pixels, this means the illustration is _____.
a raster graphic (dot matrix data structure)
A camera creates a digital image by using a _____ that captures a picture by turning light into electrical signals.
electronic photodetectors? (rather than chemical-exposure)
