thormod

<p>Pretty much the same as the two above, but I treated the umbrella differently.</p><div></div>

<p>Quote: Just find where it starts and ends inside the container, and perhaps prepare a separate header, and write it to disk.Unquote.<br> Thats what I did. Didn't even need to prepare a header. My problem was Oly supports claim that the thumbnail was not JPEG. They have changed their mind now.</p>

<p>I have to stop claiming "Final"!<br> Therefore: New update. <br> I am now 99% convinced (again) that the Oly Raw thumbnail is a .jpg.<br> I have called Oly support, again, and they confirm it, with 99% certainty. </p>

<p>Removed a couple items that "bothered" me. Pushed colors a little and sharpened.</p><div></div>

<p>Ok, final update. I have had words with Oly, and it turns out that Oly was right. A .Orf file does <strong>not</strong> contain a .jpg thumbnail/preview. The .Orf does contain a miniature of the "RAW" image in a proprietary format.<br> The WIC and the Oly Codec allows third party rendition of the miniature, like WinExplorer.</p>

<p>Good call. Maybe I can try next week:)</p>

<p>Yes, I have an image I'd like to see what others would do with it.</p> <p>Do I start the thead? Sorry for late reply, keep forgetting that this forum requires a "Confirm" not visible without scrolling down.</p>

<p>Me embarrassed!<br> If not.... Meaning You got something:)<br> I withdraw my proposal:) </p>

<p>If not what? :)<br> I have an image I'd like to see what others can do to.</p>

<p>This was quick.<br> I have proven myself to be wrong. I hacked an Oly .orf RAW file with a Hex editor and created a block of junk data within the RAW data. dCraw renders the Raw data containing my junk, while ExifTool renders a preview unblemished. I consider this conclusive proof of a jpg thumbnail/preview in thee Olympus RAW file.<br> I am very disappointed with Oly support. We will have words!<br> <br> Tom</p>

<p>I swapped the red and blue channels.</p><div></div>

<p>Thanks Wouter for you patience. I dug up an old XP laptop No WIC no codec. no MS codec pack. I can not see a thumbnail in WinExplorer, as expected.<br> Had an old version of Exiftool on it, the one where you drop imaged om the desktop icon (the camel), with the -k -w txt switches. (Creates a txt file on the desktop with the Exif data). Started updating Exiftool and wife unplugged power supply during installation. The old suffering battery has about 10 sec charge and Laptop crashed. I get the option to boot in safe mode - which it doesn't:(<br> Tim: Interesting. Found the cache but very strange. The thumbnails seem to have the same size as the small jpgs I load together with the RAW file. I used to save a 640x480 jpg together with the RAW until I heard of the WIC and Oly codec. One day, I saved larger jpgs, to do a QD (quick and dirty) comparison with a Canon lady. The thumbs from that shoot are larger.</p> <p>I think it's about time to pull the plug on this thread. I declare my question for answered. Sheer probability indicates that I, Canon and Nikon are wrong. <br> Thanks to everybody who have participated. I will at leisure continue investigating and should I find conclusive evidence to the existence of a thumb/preview in the unprocessed RAW file straight from the camera, I will return here and make a statement to that effect.<br> Tom</p>

<p>It did and didn't:)</p> <p>Wouter, thanks for the files. I have looked at them closely, but they do not answer whether the RAW file from the camera contains a embedded jpg or not.<br />Your image no.:2 (BW) proves the existence of a preview file embedded in the edited cnx2edit.nef.<br> After installing the Nikon codec, I could view both files in windows Explorer. The cnx2edit.nef thumbnail was BW.<br />I then opened both files in Adobe ACR where both images were in color. Unquestionable proof that WinExplorer renders a thumbnail. from the cnx2edit.nef. Albeit strange that the thumbnail/preview does not look like the raw image.<br> My conclusion is that you are right. A nef file may contain an embedded .jpg, but only if it is edited and saved using the CaptureNX2 software. (and any other Nikon SW I don't know about).<br> I continue to believe that the RAW file, unedited, from the camera, does not contain an embedded .jpg.<br> I continue to believe the reason the unedited RAW file renders an image in WinExplorer, and other, is the WIC and the Nikon Codec.<br> It seems that you are all right. You'all, and the guy at Nikon.<br> My error is not considering the possibility of a jpg being added during editing along with the editing meta data. Maybe even Oly does that, when using their SW. I use PS.<br> Tom</p> <p>Wow, major headache: Does ACR add a jpg to my edited .orfs?</p>

<p>Thanks Wouter, PM received. I have a feeling that this may convince me:)</p>

<p>I don't oppose the existence of a embedded jpg in a RAW file! I question it. My knowledge of RAW stems from the literature of Bruce Fraser, and I have credible information from three major camera manufacturers supporting my opinion.<br> On the other hand, with all respect, I have some people on the internet claiming the opposite. Occam's Razor right back at you:)<br> However, I am getting close to the answer. I now know how to "force" a colored block into a RAW file without impacting upon a embedded jpg. A single line was simple, a block requires some math to avoid destroying the raw data<br> Wouter, I will await your PM, but in the mean time,</p> <blockquote> <p> there is no XMP sidecar with this program </p> </blockquote> <p>What program are you referencing? If it is a RAW editor, there are( to my knowledge) two options for keeping the etiting meta data. Either within the RAW file it self or a separate .xmp file. If the meta data is saved within the RAW file, I thought the RAW file would grow in size. Anyhoo, actually the statement about size in my answer was a joke. Did you miss my ridicoulous claim that the size might grow due to the use of a larger font! You do know that the meta data in the.xmp is ASCII text?<br> <br />Tom</p>