The following table lists key characteristics of common digital image file formats.
| Format | Bit depth (per pixel) | Color model | Lossy compression | Lossless compression | Layers | Alpha channels | Embedded timecode | Additional features |
| Adobe Digital Negative (DNG) | Various | Various |
x
|
x
|
x
|
x
| Supports all feature of TIFF specification, various metadata | |
| xAdobe Photoshop Document (PSD) | Various | Various |
x
|
x
|
x
| Supports vectors, parametric image operations, color profiles, other metadata | ||
| Kodak Cineon (CIN) | 30 | Logarithmic RGB, linear RGB |
x
| Can store key numbers, other metadata | ||||
| CompuServe Graphical Interchange Format (GIF) | 8 | Indexed RGB | Supports animation, keyed alpha | |||||
| SMPTE Digital Picture Exchange (DPX) | 24, 30 | Logarithmic RGB, linear RGB |
x
| Supports all features of Cineon specification | ||||
| JPEG | 24 | Linear RGB |
x
|
x
| ||||
| JPEG-2000 | Various | Various |
x
|
x
|
x
| Supports color profiles, other metadata | ||
| TIFF | Various | Various |
x
|
x
|
x
|
x
| Several variants of the TIFF format are available, such as LogLuv and Pixar, allowing for different dynamic ranges, supports color profiles, other metadata | |
| OpenEXR | 48 | Logarithmic HDR |
x
|
x
| Covers 9.6 orders of magnitude with 0.1% precision, can store key numbers, other metadata | |||
| Radiance | 32 | Logarithmic HDR |
x
| Covers 76 orders of magnitude with 1.0% precision | ||||
| Portable Network Graphics (PNG) | 24 | Linear RGB |
x
|
x
| ||||
| Targa (TGA) | 24 | Linear RGB |
x
| |||||
| Windows Bitmap (BMP) | 8, 24 | Linear RGB |
No comments:
Post a Comment