Re: Battery Drain on Canon EOS Digital Rebel

From: W. Wat son (wolf_tracks_at_invalid.inv)
Date: 01/19/05 

Date: Wed, 19 Jan 2005 14:36:38 GMT

Martin Brown wrote:

> Chris L Peterson wrote:
>
>> On Wed, 19 Jan 2005 06:17:51 GMT, "W. Wat son"
>> <wolf_tracks@invalid.inv> wrote:
>>
>>
>>> Well, I'll be calling Canon tomorrow anyway, so I can put it to them.
>>> I just managed to erase all the photos on the FC. Not a bigee. The
>>> pix were not that important. I'm curious if there's an undo though.
>>
>>
>> Normally, deleting files under the FAT file system (which is what the
>> Canon
>> uses) doesn't remove the data, just the directory entry. But I expect
>> that in
>> this case the data is really gone. Writing flash cells requires that
>> they be
>> erased, which is a long operation. Better to do it when deleting
>> images than
>> doubling the write time (that is, an erase followed by a write) after
>> taking the
>> picture.
>
>
> Several vendors offer software to recover inadvertantly deleted images
> off digicam media. PhotoRescue for one example and they work reasonably
> well.
>
> You should always image the entire media first and then work on the
> copy. Making any changes to the original media risks losing the images
> forever if you choose your file recovery program unwisely. All the
> decent ones should offer to make an exact bit for bit copy the media as
> step one and then work on that.
>
> Avoid using N*rton on badly damaged images it seems to make a pretty
> good job of trashing them in most examples that I have seen. I sometimes
> repair valuable damaged JPEG images as a sideline (ie after conventional
> file recovery has failed).
>
> Regards,
> Martin Brown
I talked with Canon this morning and the referred me to Google with a
search for "Digital Photo Recovery". There's shareware and other software
out there that will do the job. Also mentioned any large store with
computer software, Best Buy, ... I'll try Staples later. I'll need a card
reader, which I happen to have bought a day or so ago.

I realized what I did immediately, and have not manipulated the card in
anyway since then. Well, I guess I'll get to test the recovery ability of
the software. 

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              Wayne T. Watson (Watson Adventures, Prop., Nevada City, CA)
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