This content has been marked as final. Show 13 replies
The short answer to your question is a very simple "No." The DNG converter will only convert raw files from specific cameras supported by Adobe.
Jim answered your question.
The thing to remember is that PhotoCD is nothing like RAW Data. RAW Data
isn't bitmap that is what ACR, Lightroom and other raw processing programs
do convert the raw data to bitmap data. PhotoCD on the other hand is bitmap
data. PhotoCD was advanced for a good 30 minutes after it was released and
then it was obsolete. Your best bet is to use whatever PhotoCD software you
have and convert them to TIFF files using the highest resolution you can
with interpolation. PhotoCD is becoming ever increasingly hard to access and
that won't be getting better.
On Fri, 13 Mar 2009 23:40:55 -0700, Robert_Barnett@adobeforums.com
>RAW Data isn't bitmap that is what ACR, Lightroom and other raw processing programs
>do convert the raw data to bitmap data.
RAW is not bitmap, you mean, it is not a special subset of TIFF? How
are image data stored in RAW files?
Writing and Imaging
DNG, as all RAW format files, do NOT store a real image.
They store the data of the sensor/chip and may be a description of the physical layout of the sensor.
With that information the software can calculate the real image out of the data provided.
DNG is based on TIFF but as "TIFF, a tag-based file format for storing and interchanging raster images." DNG/TIFF is ony a file format for storing data in a known and flexible structure. CR2's from Canon are TIFF files, such as PEF from Pentax......
Mostly you have a simple preview image inside the RAW file. Which is mostly a JPG image for quick access. Do NOT think this is the real data even if you can see it with InfranView and others.
The DNG spec can be found on Adobes web page, if you want to read more. Also the TIF6 spec is there.
As written, save your PCD files as TIFF and you should be save.
(May be PCD is also a kind of TIFF)
RAW is demoasiced data. RAW processors are required to work with that data, <br />basically convert it to bitmap.<br /><br />RAW data/RAW same thing in my book, RAW data is just not as simple a way of <br />putting it as it should have been. :)<br /><br />Robert<br /><br /><Dierk_Haasis@adobeforums.com> wrote in message <br />news:firstname.lastname@example.org...<br />> On Fri, 13 Mar 2009 23:40:55 -0700, Robert_Barnett@adobeforums.com<br />> wrote:<br />><br />>>RAW Data isn't bitmap that is what ACR, Lightroom and other raw processing <br />>>programs<br />>>do convert the raw data to bitmap data.<br />><br />> RAW is not bitmap, you mean, it is not a special subset of TIFF? How<br />> are image data stored in RAW files?<br />><br />><br />><br />> -- <br />> Dierk<br />> [DH² Publishing]<br />> www.DH2Publishing.info<br />> Writing and Imaging<br />>
>RAW is demoasiced data.
No. The demosaicing happens during the conversion by the raw converter, e.g. Adobe Camera Raw.
I hope the ACR team jumps in this discussion soon to clarify several statements in this thread.
As for saving a TIFF (or even a JPEG) as a DNG, it can certainly be done, though not through the DNG Converter.
I just took a TIFF file and a JPEG file, opened each one in ACR 5.3 and saved them as DNG files in ACR 5.3.
However, that doesnt create a DNG file with raw data. I have seen several discussions of this as a good workflow. And while it's possible to do, you dont gain all the advantages of having raw image data to work with.
>that doesnt create a DNG file with raw data
Of course not. That is obvious.
The OP talks about archiving only. Also, I'm not suggesting it's a good or a bad idea. I'm still not using real DNGs for anything, let alone fake ones.
I always get that backwards. Thanks for clarifying, the last thing I want is
to confuse someone trying to understand.
However, Ramóm, you should have noted that doing so does not make it a raw
file. It is a bitmap in raw clothing and nothing more. There is also very
little reason to do so. There is as far as I know only one way to get a true
full on raw file and that is from a digital camera and one that can save in
Disregard my comments about it not being a true raw file. I see that it was
Britt, I suggest you archive these images in TIFF format. TIFF is fine for archiving. (DNG is primarily a set of TIFF extensions with raw scene-referred data in mind. Though it will also work fine for your images, there's really not much advantage going that route.)