Photography and Image Resizing Fundamentals
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Questions and Answers

What happens to the image size when the resolution is changed to 150 with resampling turned on?

  • The image size is reduced.
  • The image size is increased.
  • The image size remains the same. (correct)
  • The image size changes depending on the original image dimensions.
  • What happens to the image size when resolution is changed with resampling turned off?

  • The image size does not change if the resampling is off.
  • Image size is reduced. (correct)
  • Image size remains the same.
  • Image size is increased.
  • How are colors determined in the resulting image when resampling is used?

  • Colors are copied directly from the original pixels.
  • Colors are averaged from surrounding pixels in the original image. (correct)
  • Colors are set to black-and-white to reduce file size.
  • Colors are randomly assigned to the new pixels.
  • What does the term 'aspect ratio' describe?

    <p>The ratio of the width to the height of an image. (A)</p> Signup and view all the answers

    What happens to an image if one dimension, either the width or the height, is changed without modifying the other?

    <p>The image will become distorted. (B)</p> Signup and view all the answers

    What feature is used to ensure that image dimensions are changed proportionally?

    <p>Aspect ratio lock (D)</p> Signup and view all the answers

    How does resampling affect an image when resizing?

    <p>Resampling is used to create a smoother, higher quality image. (D)</p> Signup and view all the answers

    What is the main purpose of changing an image's resolution?

    <p>To make the image appear crisper or smoother. (B)</p> Signup and view all the answers

    What is a jog dial used for on a camera?

    <p>Scrolling through setting options (A)</p> Signup and view all the answers

    What is the relationship between megapixels and image resolution?

    <p>A higher megapixel count results in a higher image resolution. (D)</p> Signup and view all the answers

    What is the key difference between optical zoom and digital zoom?

    <p>Optical zoom uses the camera lens to magnify the subject, while digital zoom crops and enlarges the image. (A)</p> Signup and view all the answers

    How does digital zoom enlarge the subject?

    <p>By interpolating pixels to fill the frame. (C)</p> Signup and view all the answers

    Which of the following is NOT a recommended practice for camera care?

    <p>Force a memory card in if there is resistance. (D)</p> Signup and view all the answers

    What unit of measure is used for megapixels?

    <p>Million pixels (MP) (B)</p> Signup and view all the answers

    Which color model is primarily used for printed output?

    <p>CMYK (B)</p> Signup and view all the answers

    Which type of zoom typically results in higher image quality?

    <p>Optical zoom (B)</p> Signup and view all the answers

    What is the primary difference between the RGB and CMYK color models?

    <p>RGB uses light, CMYK uses pigments (D)</p> Signup and view all the answers

    Which of the following is NOT a feature of a camera that can be adjusted using a jog dial?

    <p>Image resolution (A)</p> Signup and view all the answers

    Which color model is based on human perception of color?

    <p>HSB (C)</p> Signup and view all the answers

    What is the main function of the image sensor on a digital camera?

    <p>To react to and record light to produce an image (B)</p> Signup and view all the answers

    Which of the following is NOT a common tactic to relieve stress?

    <p>Use a timer to track your work progress (A)</p> Signup and view all the answers

    What is the main idea of the first passage?

    <p>Stress can negatively impact work performance (A)</p> Signup and view all the answers

    Which of the following is a suggested tactic for relieving stress, according to the passage?

    <p>Going for a walk (D)</p> Signup and view all the answers

    Which of these is the most accurate interpretation of the statement "You can take your work seriously, but not become overly stressed"?

    <p>There is a fine line between being dedicated and being overwhelmed by work (B)</p> Signup and view all the answers

    Which of the following is NOT mentioned as a color model in the second passage?

    <p>Lab (B)</p> Signup and view all the answers

    What is a major benefit of using a DSLR camera over a point-and-shoot camera?

    <p>DSLR cameras offer more adaptability and manual control. (D)</p> Signup and view all the answers

    What is the purpose of megapixels in a digital camera?

    <p>Megapixels determine the size and resolution of the captured images. (C)</p> Signup and view all the answers

    What is a disadvantage of using JPG format for saving images?

    <p>JPG files use lossy compression, which can result in quality loss. (B)</p> Signup and view all the answers

    What is the primary advantage of using a raw data file format for saving images?

    <p>Raw files allow for more flexibility in editing and post-processing. (B)</p> Signup and view all the answers

    Which of the following is NOT a characteristic of point-and-shoot cameras?

    <p>Generally more expensive than DSLR cameras. (B)</p> Signup and view all the answers

    What is the main reason for using a digital zoom on a camera?

    <p>Digital zoom is used to compensate for a lack of optical zoom. (A)</p> Signup and view all the answers

    What is the main benefit of using a camera in a 'raw' format?

    <p>It enables more flexibility in post-processing edits. (B)</p> Signup and view all the answers

    Which program is a stand-alone raster-based image editing software?

    <p>Corel Paint Shop Pro (A)</p> Signup and view all the answers

    Which file type is commonly used in web page design?

    <p>GIF (C)</p> Signup and view all the answers

    Which file type is most commonly used for saving digital photographs?

    <p>JPG (D)</p> Signup and view all the answers

    What is the primary advantage of using a JPG file format?

    <p>High color depth (A)</p> Signup and view all the answers

    Which of these file types is best suited for images with transparent backgrounds?

    <p>PNG (A), GIF (D)</p> Signup and view all the answers

    Which file type is known for being compressed and small in file size?

    <p>GIF (B)</p> Signup and view all the answers

    Which file type is typically used for line drawings, animated figures, and images with transparent backgrounds?

    <p>GIF (D)</p> Signup and view all the answers

    What is the main reason for the widespread use of JPG files?

    <p>They offer a good balance between image quality and file size. (C)</p> Signup and view all the answers

    Flashcards

    Raster Image Software

    Programs used to create and manage raster images.

    Adobe Photoshop

    The most widely used raster image software for editing and creating images.

    Microsoft Paint

    A simple raster graphics editor included with Windows OS.

    GIMP

    An open-source raster graphics editor for image manipulation.

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    BMP

    A raster file type with typically large file sizes and limited colors.

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    JPG

    A common raster file format that supports up to 16 million colors.

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    GIF

    A compressed raster file type that uses only 256 colors.

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    Nonnative Raster Format

    Formats like JPG, BMP, and GIF that are often not created by software.

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    RAW file format

    A file format that contains all image data without compression or processing.

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    Image processing

    The need to process RAW files using conversion software on a computer.

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    Camera care

    Practices to keep your camera safe and functional, like cleaning the lens.

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    Lens cleanliness

    Keeping the lens area clean using a soft lens cloth.

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    Safe camera storage

    Keep camera batteries stored without contact to avoid risks.

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    Avoiding sun shots

    Do not shoot directly into the sun to protect the camera and eyes.

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    Handling leaking batteries

    Never handle batteries that appear to be leaking to avoid danger.

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    Digital Camera Types

    The two main categories of digital cameras are point-and-shoot and DSLR.

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    DSLR Advantages

    DSLR cameras offer high image quality, adaptability, faster performance, and manual control.

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    Point-and-Shoot Benefits

    Point-and-shoot cameras are cheaper, less bulky, and easier to use than DSLRs.

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    Shooting Modes

    Point-and-shoot cameras provide various shooting modes for different situations.

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    Megapixels

    Cameras measure possible image size using megapixels, indicating image clarity.

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    Optical Zoom vs Digital Zoom

    Optical zoom uses lens movement; digital zoom crops the image.

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    JPG File Format

    JPGs are small, easy to use files with lossy compression, widely supported.

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    RAW Data Files

    RAW files offer stable image quality with greater control but require conversion before use.

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    Jog Dial

    A wheel or dial on a camera to scroll through settings.

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    Image Sensor

    Component that reacts to light to record images.

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    Optical Zoom

    Lens physically moves to magnify the subject.

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    Digital Zoom

    Crop and enlarge part of a digital image.

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    Maximum Image Resolution

    The highest detail level that a camera can capture.

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    Camera Modes

    Different settings on a camera for various shooting conditions.

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    Interpolation of Pixels

    Technique used in digital zoom to enhance image size.

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    Resampling

    The process of changing the number of pixels in an image, affecting its resolution and quality.

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    Resolution

    The amount of detail in an image, measured in pixels per inch (PPI).

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    Changing Resolution to 150

    Adjusting the image resolution to 150 PPI while keeping the same physical size (1 x 1 inch) if resampling is on.

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    Resampling Off

    When resampling is disabled, changing the resolution alters the image size instead of maintaining it.

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    Color Pixel Determination

    Formulas used to select new pixel colors based on surrounding pixel colors during resampling.

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    Aspect Ratio

    The ratio of the width to the height of an image that affects its proportions.

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    Locking Aspect Ratio

    A feature in image software that prevents distortion by adjusting the width and height simultaneously.

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    Distortion in Images

    A visual effect that occurs when the aspect ratio is altered unevenly, leading to an unnatural appearance.

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    Stress Management

    Techniques to reduce and handle stress effectively.

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    Humor

    Using jokes or light-heartedness to relieve stress.

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    Coffee Breaks

    Short breaks taken with coworkers, often involving coffee.

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    Physical Activity

    Exercising regularly to reduce stress levels.

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    Time Management

    Using your time wisely to stay focused and reduce stress.

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    Healthy Eating

    Consuming a balanced diet to maintain physical and mental health.

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    Walking

    A simple exercise that can help clear your mind.

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    Music Therapy

    Listening to music to relax and alleviate stress.

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    Study Notes

    Digital Media 4e - Chapter 2: Image Files

    • This chapter focuses on image files, specifically raster files

    • Paint programs use pixels

    • Pixel—a specific color at a specific location in a grid

    • Drawing programs utilize vectors or lines

    • Examples of programs are provided for both raster and vector (e.g., Adobe Photoshop, Microsoft Paint, Corel Paint Shop Pro, GIMP)

    • Raster-based paint programs assign each pixel with x and y coordinates, creating a raster/bitmap image

    • Enlarging raster images causes pixilation, while reducing them results in loss of sharpness

    • Common non-native raster file types:

      • BMP: Used in word processing; large file sizes; usually 256 colors
      • JPG: High quality; 16 million colors; commonly used, compressed format
      • GIF: Small file sizes; mainly for line art, transparency, or animated graphics
      • TIFF: Works well in various environments; large file size; 16 million colors; used for print documents
    • Non-native vector file types:

      • EPS: General-purpose vector file; data and preview in one file; commonly used for print
      • SVG: Web-based vector; use HTML code; small file sizes; popular on mobile devices
    • Licensing fees related to GIF compression. Specifics on CompuServe decisions are also noted

    • Format conversion to different formats

    • Understanding of compression (lossless and lossy)

    • Lossy compression reduces file size by discarding less essential information

    • Lossless compression preserves all pixel data.

    • Image quality of JPGs depends on compression levels (1-12)

    • Understanding resolution, resizing and resampling:

      • Pixel density (ppi) defines image resolution
      • Resampling influences image quality during resizing
      • Maintaining aspect ratio during resizing
      • Formulas calculate colors for new pixels in resized images

    Digital Media 4e - Chapter 4: Digital Photography

    • Two basic camera categories: DSLR (digital single lens reflex) and point-and-shoot

    • DSLR cameras: high image quality, adaptability, faster performance, more manual control, "what you see is what you get" (WYSIWYG)

    • Point-and-shoot cameras: less expensive, more portable, easier to use

    • Camera features including shooting modes, megapixels, optical and digital zoom, file types (JPEG, RAW)

    • Camera care and safety

    • Taking photographs: candid shots (unplanned), photographic composition (selection and arrangement)

    • Compositional elements (line, shape, color, lighting)

    • Compositional principles (unity, balance, perspective, emphasis)

    • Focal point, rule of thirds, framing, leading lines, depth

    • Directional lighting: front, side, back lighting

    • Depth in photography, including terms like foreground, middle ground, and background; perspective and angles

    Digital Media 4e - Chapter 5: Color in Digital Media

    • Different color models (RGB, CMYK, HSB) explained
    • RGB—additive color model using red, green, blue light to create colors on computer screens
    • CMYK—subtractive color model using cyan, magenta, yellow, and black pigments, useful for printing
    • HSB—based on human color perception, using hue, saturation, and brightness
    • Importance of color mode selection based on output device (screen vs. print)
    • Color theory concepts including: hues, neutrals, shades, tints, tones, grayscale, complementary, and analogous colors
    • Color psychology and its effect on design
    • Application of color palettes to branding strategies using specific color themes, including monochromatic, complementary, analogous, and triadic concepts
    • Web-safe colors and the Pantone matching system (PMS)

    Digital Media 4e - Chapter 6: Raster Editing

    • Raster editing software tools such as Photoshop and other applications
    • Tools and techniques for image selection (marquee, lasso, magic wand tools)
    • Working with selection settings like anti-aliasing, feathering, tolerance, and contiguous
    • Using Quick Mask mode for selections
    • Adjusting image brightness and contrast using tools like the Curves panel
    • Importance of cropping, and retouching tools for content alteration
    • Ethical considerations with retouching
    • Understanding the concept and usage of layers and layer masks in editing which includes nondestructive editing

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    Description

    Test your knowledge on photography concepts, particularly related to image resizing and resolution. This quiz covers important principles such as resampling, aspect ratios, and camera features. Challenge your understanding of how these elements affect image quality and size.

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