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Re: [OM] odd CF card (or E3) behaviour

Subject: Re: [OM] odd CF card (or E3) behaviour
From: "siddiq@xxxxxxx" <siddiq@xxxxxxx>
Date: Fri, 2 Jul 2010 13:52:14 -0700
Re-exported the images from iphoto library, opened in preview/finder, and they 
looked fine! last time around, they were bad in preview so couldn’t even import.

tried the same card, in the card reader, on another Mac, and a PC, same deal, 
partial images. 

On Jul 2, 2010, at 1:43 PM, Chuck Norcutt wrote:

> On the surface at least it sounds like the preview/finder application is 
> corrupt.  Can it be reinstalled?  There are two more possibilities I can 
> think of.  Since you're using a Mac (which has more integrated code than 
> typically found on a PC) there could be a common subroutine used by the 
> preview/finder that is used by other applications.  If that's true and 
> that's where the problem is it may show up on other Mac image 
> applications.  The second possibility is that your computer has a 
> physical memory corruption problem that only shows up at certain 
> addresses.  That means that whether preview/finder shows the problem or 
> not depends on where in memory it's loaded or where its image memory is 
> allocated.  Try loading more stuff ahead of your image apps in order to 
> cause memory allocations to change.  Does the behavior of preview/finder 
> change?
> 
> Chuck Norcutt
> 
> 
> siddiq@xxxxxxx wrote:
>> Hi Chuck;
>> 
>> 
>> On Jul 2, 2010, at 10:17 AM, Chuck Norcutt wrote:
>> 
>>> Time for some diagnostic work and some questions.
>>> 
>>> Are you shooting raw?  If so do you know anything about the file 
>>> structure of an E3 raw file.  Or are you shooting JPEG?  When the
>>> images display on the LCD can you magnify them?
>> 
>> JPEG, and yes, can magnify just fine on camera.
>> 
>> <snip>
>>> 
>>> What you have to figure out is whether what the camera is writing
>>> is corrupted or what's being read back is what's corrupted or if
>>> its your computer or reader that's doing the corruption on either
>>> the initial read/write or the later read back.
>> 
>> First time (when I lost all the photos, only 1/5 showing, rest just
>> gray blank), I transferred the photos via a Sandisk USB2 multicard
>> reader (which I’ve been using for years). 2nd time (last night) was
>> E3>Macbook Pro vis USB.
>> 
>> I just discovered something else: The photos are fine when
>> imported/viewed in iPhoto, but are ‘corrupt’ (aka only partially
>> visible, rest gray blank) when opened up in Preview/Finder (i guess
>> the PC equivalent is Windows Explorer). Very odd.
>> 
>>> The first thing to do is replace the card with another one.  Do you
>>> see the same thing?  If not it's the card.  If so you need to test
>>> different modes.  If you were shooting raw try JPEG or vice-versa
>>> or even raw + JPEG.  Can you read back and magnify and see the
>>> entire image on the LCD.  That means not just viewing the image
>>> immediately after it was taken (probably still in an internal
>>> buffer) but also switching to display mode on the camera and being
>>> able to step through multiple images and fully magnify them on the
>>> LCD.  If this works on the second card but not on your original
>>> then it's the original card.  If it doesn't work on the second card
>>> then the problem is with the camera.  If the test (including fully
>>> magnifying more than one image on the LCD) works on both cards then
>>> you've got a problem with your computer or the card reader being
>>> used.
>> 
>> At this point I’m starting to suspect the computer, or rather the
>> application. Makes no sense, but more sense than either the card, or
>> camera. Why else would one application show the photos fine, another
>> not?
>>> My 5D can't do it but I seem to recall that the E3 can do an
>>> in-camera raw to JPEG conversion.  Does that work?
>> 
>> Not sure, never shot raw :(
>> 
>>> Chuck Norcutt
>>> 
>> 
>> Thanks!
>> 
>>> 
>>> 
>>> siddiq@xxxxxxx wrote:
>>>> G’day all;
>>>> 
>>>> Not for the first time, I’m seeing only a third, or ⅔, of an
>>>> image when I download them from the E3. They display fine on the
>>>> LCD, but when I copy them to laptop, only see partial.
>>>> 
>>>> One time I lost an entire dance photo shoot, and had to call as
>>>> many dancers as I could for a redo the next day (promotional
>>>> poster for them).
>>>> 
>>>> This time it wasn’t as critical, but I’m starting to get worried.
>>>> Is this something E3 related, or card related, you think?
>>>> 
>>>> Thanks.
>>>> 
>>>> /s
>>> -- 
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>> 
> -- 
> _________________________________________________________________
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> Themed Olympus Photo Exhibition: http://www.tope.nl/
> 

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