Images and PowerPoint

1. Images and PowerPoint • Scanners usually try to save an image as a TIF or Bitmap • Don’t use .bmp, or .tif files in PowerPoint • They are too big • They will make your presentations unnecessarily large • Save as a .jpg • All photographs • Compression settings • Larger #’s = great quality and larger file sizes • Anything with more than 256 individual colors • Save as a .gif • Anything with less than 256 colors • Large blocks of color • Newspaper cartoons • Scanned paper documents • Black & white drawings

2. What is a pixel? • The basis of alldigital imaging • Small squareblock of color information • Does not have a set size • The more pixels – the higher the “resolution”

3. Image Delivery Your screen is abig piece of graph paper 1024 pixels 768 pixels

4. Scan what you need… • Don’t over-scan your image: • “Hoping they will look better” • For full screen images in PowerPoint • You don’t need more than 1024 x 768 pixels • The computer cannot display anymore than this! • This is a moving target as technology changes

5. Image Style • Exercise care when making graphics • Don’t use two-color bitmaps for graphics • Don’t stretch or expand graphics • If an image looks jagged redo it • If you have problems ask someone for help

6. Anti-aliasing • Appears smoother • Adds some “stepped” colors around the edge • Should always be used with on screen digital imaging and logos

7. No Anti-aliasing

8. Web Images • Try to keep it the same size that it was on the web • Stretched images will always look worse