To convert the formats I used ImageMagick-6.8.8.10 on an x86_64 Intel(R) Core(TM) i7 CPU Q 820 1.73GHz, and I scripted the steps in Bash.Ĥ.1 TIFF 16-bit for c in RLE None LZW Zip do time convert foo.tif -monitor -depth 16 -compress "$c" "$5_8. The input file is a 16-bit 10000x5000 pixel real-world panorama.
TIFF and JPEG support metadata, PNG generally does not.PPI should be the unit used when referring to pixels per inch to avoid confusion. For 200 lpi halftone printing you need 400 ppi to max it out. In other words, the 5D resolution exceeds a typical. This have been tested with a resolution test slide of the same type used for testing film scanner resolution.
Ppi in rawtherapee full#
Those numbers are not one-to-one to pixels. The 5Dmk2 with this lens produces about 3600 ppi of resolution (out of 3900 in pixel density) at f/8 over the full area, while the 7D produces about 5100 ppi out of 5900 at f/5.6. JPEG is the most widely supported but is lossy and in most implementations limited to 8 bits per channel, 24 bits per pixel. For halftone printing, LPI is used (lines per inch) to describe the resolution of the screens.final processed images, scanned film, high dynamic range images, and so forth: Some things to consider when deciding which format to use for storing non-intermediate files, e.g. This pretty much means you should always use uncompressed 16-bit TIFF as your intermediate format. The ideal intermediate format is one which loses no image data or metadata and is quick to read and write. RawTherapee 5.4 uses an efficient and fast compression strategy for both TIFF and PNG, and both formats support metadata.Īn intermediate file is one you use just to pass the image data around between programs while working on it, e.g. While the information contained here may have some value, note that it is obsolete. 4.5 TIFF 64-bit double-precision floating-point.
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