Peeter Vissak <pv@xxxxxx> writes: > On Wed, 2004-09-15 at 11:21, Gary Lawton wrote: >> A JPG file is an 8bit compressed TIFF file. However, JPG compression is >> "lossy" meaning that data is thrown away during the compression process. >> >> The conversion back to TIFF will not recover data that was lost during >> the compression. Nor can it recover the 8bits of data that were >> discarded from the 16bit sensor reading. >> >> It'll work, it just wont give you the best quality > Yes, I know all that in advance, but tell me also when a camera saves a > picture in JPEG, does it mean, that it first handles it in TIFF and then > converts down to JPEG for saving? Where does that downscaling process > take place? In the operative memory? Not exactly. I very much doubt the camera actually produces a TIFF format in memory before saving a JPEG; but it must of course produce a full-resolution bitmap in memory before saving a JPEG. This all takes place in the camera, not in the memory card; the memory card is nothing but storage space. -- David Dyer-Bennet, <mailto:dd-b@xxxxxxxx>, <http://www.dd-b.net/dd-b/> RKBA: <http://noguns-nomoney.com/> <http://www.dd-b.net/carry/> Pics: <http://dd-b.lighthunters.net/> <http://www.dd-b.net/dd-b/SnapshotAlbum/> Dragaera/Steven Brust: <http://dragaera.info/>
