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01/25/2006 02:52:03 PM · #1 |
A friend of mine is working on a book. She took a large number of pictures for it as jpg files. The publisher wants RAW files. I have obnly gone from RAW to tif or jpg, never the other way.
Can she convert from jpg to RAW? Jpg is the only format supported by her camera.
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01/25/2006 02:54:11 PM · #2 |
Originally posted by slab cat:
A friend of mine is working on a book. She took a large number of pictures for it as jpg files. The publisher wants RAW files. I have obnly gone from RAW to tif or jpg, never the other way.
Can she convert from jpg to RAW? Jpg is the only format supported by her camera. |
No. JPG is a compressed format, RAW is the unfiltered data received by the sensor. The publisher wants to adjust the RAW image to their own parameters I assume. A JPG by definition has already been adjusted, not always in a beneficial way.
R.
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01/25/2006 02:55:40 PM · #3 |
To the best of my knowledge, there is no way to convert from Jpg to RAW.
Message edited by author 2006-01-25 14:56:16.
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01/25/2006 02:55:50 PM · #4 |
RAW is the format of the data straight from the sensor that captures the image. Typically, RAW holds far more image data then a JPG or even a TIFF holds.
I am unable to conceive of a way to take a JPG, even one that is straight from the camera unedited and then convert that into a RAW camera format. |
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01/25/2006 04:08:25 PM · #5 |
Not that you would do this but I believe there are some things that claim to do the conversion this way (as I said no real idea why).
This one is at random from google. |
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01/25/2006 04:13:17 PM · #6 |
It sounds weird to me that the publisher would want the RAW file. I would be hesitant to do so since he could adjust it how he likes which may be totally different than what your friend had wanted in the image in the first place and then is it really even her image anymore? I understand the desire to want an uncompressed image but I wonder why not just a TIFF?
Just wondering
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01/25/2006 04:30:18 PM · #7 |
| Thanks everybody. I believe that teh the intent is for the publisher to do the manipulations. I think the author is OK with that, she just doesn't know how to make the conversions. |
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01/25/2006 04:42:20 PM · #8 |
As far as I know, there is no way to convert a JPEG to a RAW file. If any such conversion utility existed, it would have to fabricate a lot of data that simply isn't available in a JPEG, which defeats the whole purpose. It would be similar to recreating an original painting from a mediocre photocopy.
Message edited by author 2006-01-25 16:44:05. |
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01/25/2006 04:56:16 PM · #9 |
Originally posted by slab cat:
Thanks everybody. I believe that teh the intent is for the publisher to do the manipulations. I think the author is OK with that, she just doesn't know how to make the conversions. |
She will be able to convert it to TIFF. Sure, that will extrapolate JPEG data but it will give the publisher something a bit meatier to work with.
Since the pics came out of the camera as JPEG, nothing can recreate the source, nothing. I found a very good reference to all of this at photo.net - About File types
Brett |
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01/25/2006 05:38:43 PM · #10 |
If the jpeg is a bit decent (no 1mp crap) a publisher should be able to work with just that. When I had the S602 several publishers could work with the jpegs just fine. Even to print them in full Letter/A4 size in books.
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