On Fri, 8 Jul 2005 22:38:59 -0700, Mark², <mjmorgan@cox> wrote:
> CF, SD, MMC, and other more recent cards all have the controller
> on-card, which means the device doesn't have to be anything
> special...unless you get over 4GB, which means it has to have a
> firmware that can handle large "disks/cards." FAT32.
I seem to remember the FAT16 maximum being 2 gigs. That should
handle 122 tiff-quality shots at 2560x1920. If you want to do any
editing (other than rotations in exact multiples of 90 degrees), you
will suffer degradation if you start from a jpeg. Better to have an
original "archive copy" tiff, and work with copies of that.
Storing more images would require extra work by Panasonic. I know
that Microsoft's patent on all FAT filesystems has been revoked. But
they might have an argument for a FAT32 patent. Other options are...
- multiple FAT16 partitions of up to 2 gigs each. Not a bad idea.
- file compression. zip is half decent. bzip2 (
http://www.bzip.org)
is even better. Here's a comparison with half a dozen tifs, and
zip (max compression, not default) and bzip2 compression results...
[m450][waltdnes][~/camera] ll *.tif *.zip *.bz2
-rw-r--r-- 1 waltdnes users 14761984 Jul 8 13:45 p1000032.tif
-rw-r--r-- 1 waltdnes users 7840984 Jul 8 13:45 p1000032.tif.bz2
-rw-r--r-- 1 waltdnes users 10581208 Jul 9 21:15 p1000032.tif.zip
-rw-r--r-- 1 waltdnes users 14761984 Jul 8 13:50 p1000033.tif
-rw-r--r-- 1 waltdnes users 8429324 Jul 8 13:50 p1000033.tif.bz2
-rw-r--r-- 1 waltdnes users 11166267 Jul 9 21:15 p1000033.tif.zip
-rw-r--r-- 1 waltdnes users 14761984 Jul 8 13:52 p1000034.tif
-rw-r--r-- 1 waltdnes users 8071247 Jul 8 13:52 p1000034.tif.bz2
-rw-r--r-- 1 waltdnes users 11255898 Jul 9 21:15 p1000034.tif.zip
-rw-r--r-- 1 waltdnes users 14761984 Jul 8 13:53 p1000035.tif
-rw-r--r-- 1 waltdnes users 7405305 Jul 8 13:53 p1000035.tif.bz2
-rw-r--r-- 1 waltdnes users 10536870 Jul 9 21:15 p1000035.tif.zip
-rw-r--r-- 1 waltdnes users 14761984 Jul 8 13:54 p1000036.tif
-rw-r--r-- 1 waltdnes users 8015679 Jul 8 13:54 p1000036.tif.bz2
-rw-r--r-- 1 waltdnes users 10958210 Jul 9 21:16 p1000036.tif.zip
-rw-r--r-- 1 waltdnes users 14761984 Jul 8 13:56 p1000037.tif
-rw-r--r-- 1 waltdnes users 6353108 Jul 8 13:56 p1000037.tif.bz2
-rw-r--r-- 1 waltdnes users 9121470 Jul 9 21:16 p1000037.tif.zip
compression programs might be too much of a load on a camera. You'd
need a cpu, a simple operating system, and ram. Probably go through
batteries like crazy, even if it could be done.
--
Walter Dnes; my email address is *ALMOST* like
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