Good day All,
I just stumbled over this video the other day: https://youtu.be/cPdQVWP5pRs
And I watched it to see the dogs action, it was however a bit dull but nice
dogs, comparable to mine.
The photog seems to discover that using a computer to add/delete/mod the images
created by a camera will lead to an error.
Of course, it comes as no surprise to you, from your own experience, probably.
But the fundamental beneath that is that a camera does not implements the
complete file system management as a computer does. And more to the point, the
file management is closer to Microsoft DOS than any UNIX system.
First because now MS DOS has fell in the public domain, second because it is is
much easier to implement than the recent file system such as 'ext4' or 'ntfs'.
Both are typically built for networking.
Back to the cameras, one must think that it is a tiny processorthat does the
input/output of the files (tiny but probably 10 or 20 times beefer than the
Intel 80386 we had in the 90ies). The processor has been optimised to
write/read large sequences of bytes in a row (a 17Mbytes in raw images for
instance).
Of course if the SD support starts to contaiin 'deleted' files put in .trsh
folder with a .lost+found directory as it might happen on a Apple Mac (it is a
UNIX Under), the camera looses its paddles and bugs out. Normal behavior.
So, best practice, download all images on the computer and edit them on the
computer. Or use the file management of the camera to delete them before
downloading. But never mix both practice or else, you may loose your precious
work!
It was the tech minute of the week, enough, back to Imaging :)
#-----------------------------------
From : Xavier F. BILLE
mail : hot_billexf@xxxxxxxxxxx
Maisons Alfort - France
