Master

Access

Thumbnail

Spatial Resolution

3000-5000 pixels on the longest dimension

150 ppi

72 ppi

Spatial Dimensions

100% of original

600 pixels
on longest dimension

100-200 pixels on longest dimension

Bit Depth

1 bit bitonal
8 bit grayscale
24 bit color

1 bit bitonal
8 bit grayscale
24 bit color

1 bit bitonal
8 bit grayscale
8 bit indexed color
24 bit color

File Type

TIFF

JPEG

JPEG
GIF

Compression

none or
lossless

JPEG Medium Quality Compression

JPEG, Low Quality Compression

Sample Resolutions for Common Photograph Sizes

Original Size

3000 pixels on
longest dimension

5000 pixels on
longest dimension

2" x 2"

1500 ppi

2500 ppi

3" x 5"

600 ppi

1000 ppi

4" x 7"

450 ppi

725 ppi

8" x 10"

300 ppi

500 ppi