I have uploaded some images to the storage media on my Canon camera.

And can verify that they are there using 'gimp' to view them directly
from the camera.

However I can not view them with the display function of the camera.
What is the difference between a jpeg created with 'gime' and a jpeg
created by the camera. Or does the camera write a directory or some
other file that is needed to view the images.

Am I approaching this from the right direction?
Thanks for any help/
Dave

On Thu, 17 Jul 2008 14:00:46 -0700, Dave Kelly wrote:

> I have uploaded some images to the storage media on my Canon camera.
>

Code:

> SilverNail:~# ls /mnt/sdc1/dcim/100canon ballareina.jpg  goldtree.jpg
> greentree.jpg   gulls.jpg washerwoman.jpg beggingman.jpg  greenman.jpg
> greenwoman.jpg suntree.jpg
> 

>
> And can verify that they are there using 'gimp' to view them directly
> from the camera.
>

Code:

> SilverNail:~# gimp /mnt/sdc1/dcim/100canon/*jpg 

>
> However I can not view them with the display function of the camera.
> What is the difference between a jpeg created with 'gime' and a jpeg
> created by the camera. Or does the camera write a directory or some
> other file that is needed to view the images.
>
> Am I approaching this from the right direction? Thanks for any help/
> Dave

The camera will have a very specific format for the file - what you create
elsewhere may or may not be totally compatible. The reason for this is
that the camera has a very low powered, slow CPU. You might also try
giving it a name that the camera would create - it may not recognize the
names you have listed above - usually some letters followed by numbers
e.g. dcim0001.jpg or whatever your specific camera names them.

Dave Kelly wrote:
> I have uploaded some images to the storage media on my Canon camera.
>

Code:

> SilverNail:~# ls /mnt/sdc1/dcim/100canon
> ballareina.jpg  goldtree.jpg  greentree.jpg   gulls.jpg
> washerwoman.jpg beggingman.jpg  greenman.jpg greenwoman.jpg
> suntree.jpg
> 

>
> And can verify that they are there using 'gimp' to view them directly
> from the camera.
>

Code:

> SilverNail:~# gimp /mnt/sdc1/dcim/100canon/*jpg
> 

>
> However I can not view them with the display function of the camera.
> What is the difference between a jpeg created with 'gime' and a jpeg
> created by the camera. Or does the camera write a directory or some
> other file that is needed to view the images.
>
> Am I approaching this from the right direction?
> Thanks for any help/
> Dave
>

Hello Dave:

I wonder what would happen if you were to move an image, taken by the
camera, to your linux box:

# mv /mnt/sdc1/dcim/100canon/canonimage.jpg /root/Desktop/canonimage.jpg

Then, confirm that it's gone from your camera.

# ls -alF /mnt/sdc1/dcim/100canon

Then, reverse the move command:

# mv /root/Desktop/canonimage.jpg /mnt/sdc1/dcim/100canon/canonimage.jpg

If it can be /seen/ by your camera, maybe your camera's firmware edits
the file structure in a manner not followed by the Linux standard.

Also, does the "ls -al" command show any possible differences between
the camera's jpegs and those moved to the camera storage from another
source?

I'm out of my league here but, I wonder how close the Canon file system
spec follows the Linux file system spec?

Best wishes.

--
1PW

@?6A62?FEH9:DE=6o2@=]4@> [r4o7t]

On 18 Jul 2008 00:43:38 GMT, ray wrote:
> On Thu, 17 Jul 2008 14:00:46 -0700, Dave Kelly wrote:
>
>> I have uploaded some images to the storage media on my Canon camera.
>>

Code:

>> SilverNail:~# ls /mnt/sdc1/dcim/100canon ballareina.jpg  goldtree.jpg
>> greentree.jpg   gulls.jpg washerwoman.jpg beggingman.jpg  greenman.jpg
>> greenwoman.jpg suntree.jpg
>> 

>>
>> And can verify that they are there using 'gimp' to view them directly
>> from the camera.
>>

Code:

>> SilverNail:~# gimp /mnt/sdc1/dcim/100canon/*jpg 

>>
>> However I can not view them with the display function of the camera.
>> What is the difference between a jpeg created with 'gime' and a jpeg
>> created by the camera. Or does the camera write a directory or some
>> other file that is needed to view the images.
>>
>> Am I approaching this from the right direction? Thanks for any help/
>> Dave
>
> The camera will have a very specific format for the file - what you create
> elsewhere may or may not be totally compatible. The reason for this is
> that the camera has a very low powered, slow CPU.

Quite true. The minimal software stuffed into a (P&S) digital camera
_only_ understands the 3, 4 or 5 'formats' that it takes and stores
images in. You'll be damn lucky to fiddle with an image off-camera and
then re-load it onto the camera and have the camera display it.

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
38.24N 104.55W | @ config.com | Jonesy | OS/2
*** Killfiling google posts: <http://jonz.net/ng.htm>

Dave Kelly wrote:

> I have uploaded some images to the storage media on my Canon camera.
>

Code:

> SilverNail:~# ls /mnt/sdc1/dcim/100canon
> ballareina.jpg  goldtree.jpg  greentree.jpg   gulls.jpg
> washerwoman.jpg beggingman.jpg  greenman.jpg greenwoman.jpg
> suntree.jpg
> 

>
> And can verify that they are there using 'gimp' to view them directly
> from the camera.
>

Code:

> SilverNail:~# gimp /mnt/sdc1/dcim/100canon/*jpg
> 

>
> However I can not view them with the display function of the camera.
> What is the difference between a jpeg created with 'gime' and a jpeg
> created by the camera. Or does the camera write a directory or some
> other file that is needed to view the images.
>
> Am I approaching this from the right direction?
> Thanks for any help/
> Dave

I do the same trick with my camera memory card. But the camera won't
display the changed image because there is no thumbnail image that
matches it. I don't know how to create the thumbnail externally.

But if I take the pair of images un-modified and put them back the
camera displays the image just fine.

--
Best Regards:
Baron.