Study Two continued: Comparing JPEGs and GIFs as thumbnails

For Study Two, 28 files were made:

Kind of File Source
(What the file was made from)
Resolution Size Dimensions
Pict 1Original150 ppi5.75 M8.447 x 10.569 inches
Pict 2Original72 ppi1.32 M 8.447 x 10.569 inches
JPEG 1Pict 1150 ppi,
maximum quality
5.75 M
8.447 x 10.569 inches
JPEG 2Pict 1150 ppi,
high quality
5.75 M8.447 x 10.569 inches
JPEG 3Pict 1150 ppi,
medium quality
5.75 M8.447 x 10.569 inches
JPEG 4Pict 1150 ppi,
low quality
5.75 M8.447 x 10.569 inches
JPEG 5
Thumbnail
Pict 1, JPEG 1150 ppi,
maximum quality
53 K
120 pixels wide x
150 pixels tall
JPEG 6
Thumbnail
Pict 1, JPEG 2150 ppi,
high quality
53 K
120 pixels wide x
150 pixels tall
JPEG 7
Thumbnail
Pict 1, JPEG 3150 ppi,
medium quality
53 K
120 pixels wide x
150 pixels tall
JPEG 8
Thumbnail
Pict 1, JPEG 4150 ppi,
low quality
53 K
120 pixels wide x
150 pixels tall
JPEG 9Pict 272 ppi,
maximum quality
1.32 M8.447 x 10.569 inches
JPEG 10Pict 272 ppi,
high quality
1.32 M8.447 x 10.569 inches
JPEG 11Pict 272 ppi,
medium quality
1.32 M8.447 x 10.569 inches
JPEG 12Pict 272 ppi,
low quality
1.32 M8.447 x 10.569 inches
JPEG 13
Thumbnail
Pict 2, JPEG 572 ppi,
maximum quality
53 K
120 pixels wide x
150 pixels tall
JPEG 14
Thumbnail
Pict 2, JPEG 672 ppi,
high quality
53 K
120 pixels wide x
150 pixels tall
JPEG 15
Thumbnail
Pict 2, JPEG 772 ppi,
medium quality
53 K
1120 pixels wide x
150 pixels tall
JPEG 16
Thumbnail
Pict 2, JPEG 872 ppi,
low quality
53 K
120 pixels wide x
150 pixels tall
GIF 1
Thumbnail
Pict 1150 ppi 18 K120 pixels wide x
150 pixels tall
GIF 2
Thumbnail
Pict 272 ppi 18 K120 pixels wide x
150 pixels tall
GIF 3
Thumbnail
JPEG 1150 ppi,
maximum resolution
18 K120 pixels wide x
150 pixels tall
GIF 4
Thumbnail
JPEG 2150 ppi,
high resolution
18 K
120 pixels wide x
150 pixels tall
GIF 5
Thumbnail
JPEG 3150 ppi,
medium resolution
18 K
120 pixels wide x
150 pixels tall
GIF 6
Thumbnail
JPEG 4150 ppi,
low resolution
18 K
120 pixels wide x
150 pixels tall
GIF 7
Thumbnail
JPEG 972 ppi,
maximum resolution
18 K120 pixels wide x
150 pixels tall
GIF 8
Thumbnail
JPEG 1072 ppi,
high resolution
18 K120 pixels wide x
150 pixels tall
GIF 9
Thumbnail
JPEG 1172 ppi,
medium resolution
18 K1120 pixels wide x
150 pixels tall
GIF 10
Thumbnail
JPEG 1272 ppi,
low resolution
18 K120 pixels wide x
150 pixels tall

Findings


Back to the Beginning

Back to the images in Study Two

Forward to See Study Three

Maia Jin, mjin@umich.edu, October 1995