Blank Previews on JPGs & DNGs?

My installations of Lens Profile Creator on Win XP and iMac show only blank previews of selected demo jpgs or my own dng files. Is some special display setting needed?
Stuart

Dear Simon,
To which thread are you pointing?
I still have this problem.
If I understand it right, those without CS4 are unable to convert their raw files to DNG's which can be properly read by LCP creator?
(I used the DNG converter packed with the latest ACR, but I have the same issue: DNG files load properly, but no previews)
Bart

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Hoping for any suggestions.
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I also would like to know if there is an answer to this. My landscape photos always display with a third of the cover flow window as blank empty space (matching your screenshot). This seems like such a waste. Is there any way to change the "padding" between the top of the finder bar and the cover flow preview?

Preview shrinks JPG's when added to PDF

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Edited to add - sorry, my description was slightly wrong.
If I open a single .JPG in a new Preview, and save it as a .PDF, the dimensions are fine. The issue only occurs if I try to add .JPG's to existing PDF's.
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Please restart your computer in Safe mode by taking these steps:
- Click on the Apple sign() at the upper left corner of the Desktop, select 'Shut down' from a drop-down menu;
- Wait until your computer turns off, then press the Power button(⌽);
- Immediately after you hear the startup tone, press and hold the Shift(⇧) key. It should be held as soon as possible after the startup tone, but not before the tone;
- Release the Shift(⇧) key when you see a grey Apple sign() and the progress bar below;
This will force the system to perform several maintenance routines and load essential system software.
Once you've seen the Desktop, start a Disk Utility scan to detect and repair file system errors:
- Open Disk Utility application:
1. Click on Finder at the bottom of your Desktop;
2. Select Applications folder from Finder's left sidebar and then open Utilities folder (or press Command(⌘)-Shift(⇧)-U), double-click on Disk Utility icon;
- Choose your main hard drive from the left sidebar ('Macintosh HD', usually);
- Click on 'Verify Disc' at the bottom right corner, your Mac will perform a diagnostic test. Click on 'Repair Disk' if prompted to fix problems, or follow instructions given on the Disk Utility window;
- Once the routine finished, click on ""Verify Disc Permissions"", after it's done, click on 'Repair Disc Permissions';
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Try to preview images

How is the JPEG preview in a DNG used?

The thread at What is the use of preview JPEG embedded in DNG? says that the JPEG preview in a DNG file is not used by any Adobe program. The DNG Converter, version 8.4, says "JPEG previews speed display of rendered images." This statement is on the Preferences dialog.
Which is correct? Do Adobe programs such as Lightroom use the JPEG preview?
FWIW, I deleted the JPEG previews from my DNG files and I cannot detect any performance difference. I thought that Lightroom uses its own preview cache and that may be why I don't see any performance difference. Thanks.

Andrew Rodney wrote:
Rob Cole wrote:
DNG Preview MUST be:
* full size (which is NOT the default),
They don't have to be full sized.
You should have also included the part I said after that: "if you'll want to make "near-raw" quality prints, or have it for future insurance etc." so, actually, in context, yes - they do!
Andrew Rodney wrote:
why have it update until you're finished editing?
To be clear: I was not suggesting it should be updated before you're finished editing it. Although xmp works in just that fashion, I would never opt to have it work that way personally.
My point was that you need to (know and) remember to do it or you'll have an unedited preview, or in any case a stale one, and since there is no "preview freshness" indicator or metadata item (correct me if I'm wrong about that part, but even exiftool can not determine if preview is up2date, right?), you really have to remember, or it won't be done (or complicate workflow with additional metadata to help govern..). Me? - I use publish services to export all such copies after completion - Lightroom remembers which ones need to be exported so I don't have to.
If you use DNG, perhaps a good feature request would be a DNG preview publishing service. I mean, all Lr is really doing is exporting a jpeg but instead of storing it as a separate file, embedding it in the dng, kinda just like xmp.. - that way you just publish your DNG previews along with the rest..
Rob

No blank preview pics in iphoto

Hello,
i have the problem that some pictures have no preview in iphoto. This happends only when i do changes like turn the photo in iphoto. I get only a blank preview image but the original photos are ok.
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Regards
Jens

Option 1
Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild. Choose to Rebuild iPhoto Library Database from automatic backup.
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Download iPhoto Library Manager and use its rebuild function. This will create a new library based on data in the albumdata.xml file. Not everything will be brought over - no slideshows, books or calendars, for instance - but it should get all your albums and keywords, faces and places back.
Because this process creates an entirely new library and leaves your old one untouched, it is non-destructive, and if you're not happy with the results you can simply return to your old one.
Regards
TD

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The SDK has a lot of API, but not much documentation or samples to show usage.
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s

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My Bridge update 5.2.0.4 has wrecked previews for all DNG files. They appear only sideways and small and I can't open Camera Raw in Bridge. Anyone else have the same problem?

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Now all previews (DNG files) in Bridge appear sideways and only small thumbnail size.
Also Camera Raw has been disabled.
I have tried purging cache for the folders as well as purging entire cache.
I have also spent over an hour on the phone to tech support which mainly involved being switched between departments and trying to understand anyone on the phone.
Can anyone help?

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It's obvious that Bridge finds itself at times with insufficient space to build its cache.
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http://i39.tinypic.com/2vtbn90.png
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Blank Previews on JPGs & DNGs?

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