9.5.2

688 • CHAPTER 13
RENDERING • RENDER SETTINGS • 689
 “None” means the image will not be compressed – and will be accordingly
large. Although the image will not have to be decompressed when loading or
saving it, which can save a lot of time but is only relevant for large images or
long animations.
 With the exception of “Lossy 24-bit oat”, all other compression types are non-
dissipative, i.e. the brightness will not be affected when saving the image(s).
You can nd additional information regarding OpenEXR at www.openexr.com.
Name
Many editing programs accept picture sequences. However, they tend to use different naming
conventions. Some programs expect the lename to end with a number, others an extension. Some
programs can cope only with three-digit numbers. Use this menu to set the sequential numbering
and/or lettering style required by your editor. In the example names below, ‘0000’ represents any
sequential number, ‘TIF’ represents any three-letter extension.
Example Name Example Result
 Name0000.TIF Test1234.JPG
 Name0000 Test1234
 Name.0000 Test.1234
 Name000.TIF Test123.TGA
 Name000 Test123
 Name.000 Test.123
DPI
Use this setting to choose the DPI (dots per inch) for the following picture formats: BMP, TIF, PICT.
The DPI affects a picture’s print size and, in certain applications, its display size. The DPI setting does
not affect a picture’s Resolution (Output tab); the picture’s pixel dimensions remain the same, only
the calculation regarding how many of those pixels (dots) should be printed or displayed per inch is
changed.
You render a picture that is 720 x 900 pixels. If you save the picture with 72
DPI, the print size will be 10 in x 12.5 in (25.4 cm x 31.75 cm). If you save the
picture with 300 DPI, the print size will be 2.4 in x 3 in (6.1 cm x 7.62 cm). To
calculate the print size in inches, divide the pixel dimensions (Resolution on
the Output page) by the DPI setting to get the print size in inches; multiply
the inches by 2.54 to get the print size in centimeters.