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OV 2 - 1 ght © 2012 Logical Operations, Inc. All rights reserved. Beginning with Image Basics Manage Image Elements and Formats Work with Digital Devices
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OV 2 - 1Copyright © 2012 Logical Operations, Inc. All rights reserved.
Beginning with Image Basics
Manage Image Elements and Formats Work with Digital Devices
OV 2 - 2Copyright © 2012 Logical Operations, Inc. All rights reserved.
Magnified at 300% the image with the higher resolution (300 ppi) has more clarity than the image with the smaller resolution (72 ppi)... but the file size is larger.
Pixels, Resolution, and Image Size
300 ppi resolution2 MB file size
300 ppi resolution2 MB file size
72 ppi resolution84 KB file size
72 ppi resolution84 KB file size
OV 2 - 3Copyright © 2012 Logical Operations, Inc. All rights reserved.
Retains the pixel width and heightRetains the pixel width and height
Retains any styles applied to layersRetains any styles applied to layers
Controls image dataControls image data
Image Size Dialog Box
Resolution based on inches or centimetersResolution based on inches or centimeters
Number of pixels wide and high based on pixels or percent
Number of pixels wide and high based on pixels or percent
Document size based on Inches, Picas, Percent, and other units of measure
Document size based on Inches, Picas, Percent, and other units of measure
OV 2 - 4Copyright © 2012 Logical Operations, Inc. All rights reserved.
Image Size vs. Canvas Size
Canvas size increased to add a picture borderCanvas size increased to add a picture border
OV 2 - 5Copyright © 2012 Logical Operations, Inc. All rights reserved.
Resampling
Size Enlarged to 15 x 10Resample OnResolution 72Pixels 1080 x 718File Size 2.22M
Size Enlarged to 15 x 10Resample OffResolution 38.4Pixels 576 x 383File Size 646.3K
Original Size = 8 x 5Resolution = 72Pixels 576 x 383File Size 646.3K
Document size enlargedResample OFFResult: Lower resolution, same number of pixels, same file size
Document size enlargedResample OFFResult: Lower resolution, same number of pixels, same file size
Document size enlargedResample ONResult: Same resolution as original, greater number of pixels, larger size file.
Document size enlargedResample ONResult: Same resolution as original, greater number of pixels, larger size file.
OV 2 - 6Copyright © 2012 Logical Operations, Inc. All rights reserved.
Pixelation
Increase Resolution; Resample On
Increased resolutionIncreased resolution
Original image resolutionOriginal image resolution
When resolution is increased with resampling, pixels and file size increases, document size remains the same
When resolution is increased with resampling, pixels and file size increases, document size remains the same
OV 2 - 7Copyright © 2012 Logical Operations, Inc. All rights reserved.
Pixelation
Increase Resolution; Resample Off
Increase resolutionIncrease
resolution
Original image resolutionOriginal image resolution
Increased resolutionIncreased resolution
When resolution is increased without resampling pixels and file size remain the same, document size decreases.
When resolution is increased without resampling pixels and file size remain the same, document size decreases.
OV 2 - 8Copyright © 2012 Logical Operations, Inc. All rights reserved.
Raster Image: Pixel Color Variation
Chalk Actual Pixels at 100%Chalk Actual
Pixels at 100%
Chalk Magnifiedto 800%
Chalk Magnifiedto 800%
Chalk Magnifiedto 800%
Chalk Magnifiedto 800%
OV 2 - 9Copyright © 2012 Logical Operations, Inc. All rights reserved.
Pixelation
OV 2 - 10Copyright © 2012 Logical Operations, Inc. All rights reserved.
Pixelation
Vector Image: Lines, Curves, Points
OV 2 - 11Copyright © 2012 Logical Operations, Inc. All rights reserved.
Pixelation
Color Modes
OV 2 - 12Copyright © 2012 Logical Operations, Inc. All rights reserved.
Color Settings
sRGB Three Color ChannelBest for Digital, Web, Monitor Display
Photoshop Color SettingsDefault sRGB
OV 2 - 13Copyright © 2012 Logical Operations, Inc. All rights reserved.
File Formats
File Format MenuFile Format Menu
OV 2 - 14Copyright © 2012 Logical Operations, Inc. All rights reserved.
Activity: Working with Image Size
Pixels of original imagezoomed to 200%
Pixels of original imagezoomed to 200%
Pixels of reduced and resampled imagezoomed to 200%
Pixels of reduced and resampled imagezoomed to 200%
OV 2 - 15Copyright © 2012 Logical Operations, Inc. All rights reserved.
Digital Capture of Grayscale Pixels
CCD converts analog light into grayscale pixels
CCD converts analog light into grayscale pixels
OV 2 - 16Copyright © 2012 Logical Operations, Inc. All rights reserved.
Info Panel Grayscale Values
RGB grayscale values for an area of the pink shirt as recorded by the digital camera.
RGB grayscale values for an area of the pink shirt as recorded by the digital camera.
OV 2 - 17Copyright © 2012 Logical Operations, Inc. All rights reserved.
Adobe Bridge CS6 Photo Downloader
OV 2 - 18Copyright © 2012 Logical Operations, Inc. All rights reserved.
Adobe Bridge CS6 Photo Downloader (Cont.)
OV 2 - 19Copyright © 2012 Logical Operations, Inc. All rights reserved.
Reflective Questions
1. Now that you have been introduced to some of the basic elements and factors relating to digital images and devices, what information or Photoshop features did you find most valuable for use when working with images in the future?
2. Do you own or use a digital camera? What mode(s) are you most comfortable using?
