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12/28/2006 01:44:08 AM · #1 |
Can I use one RAW file to generate multiple exposures to be ultimately used in Photoshop's "Merge to HDR" feature?
When I do this with three exposures (three conversions of the same image), I consistently get a message that says something to the effect of not enough dynamic range found.
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12/28/2006 01:52:41 AM · #2 |
| Ooh, I would like to know this as well... |
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12/28/2006 02:01:28 AM · #3 |
Originally posted by lesgainous:
Can I use one RAW file to generate multiple exposures to be ultimately used in Photoshop's "Merge to HDR" feature?
When I do this with three exposures (three conversions of the same image), I consistently get a message that says something to the effect of not enough dynamic range found. |
No, you cannot. I can't remember where I found it, but it was specifically stated in a help file somewhere that you *must* use multiple *seperate* photographs. Which, of course, means shooting using a tripod or other non-moving surface. (and trust me, shooting in bracketing mode hand-held is *not* steady enough ;))
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12/28/2006 02:05:00 AM · #4 |
You can open the one RAW file in Photomatix and then tone-map the file. Not as good as using multiple exposures, but an increase in DR, nonetheless.
I've had reasonable results using bracketed shots hand-held. Just make sure to check the 'Align' box before compilation of the HDR image.
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12/28/2006 02:10:23 AM · #5 |
You need to remove the EXIF info...that is what is stopping the HDR programme.
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12/28/2006 02:13:04 AM · #6 |
Originally posted by Judi:
You need to remove the EXIF info...that is what is stopping the HDR programme. |
Obvious next question: And how is this done? |
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12/28/2006 02:14:07 AM · #7 |
Originally posted by skylercall:
Originally posted by Judi:
You need to remove the EXIF info...that is what is stopping the HDR programme. |
Obvious next question: And how is this done? |
Try Saving For Web...if the image is too big...sometimes Saving the image a few times tends to wipe the info.
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12/28/2006 02:43:43 AM · #8 |
I work with 16-bit TIFF images as long as possible before I "save to web".
How does one remove EXIF from a TIFF file?
The Opanda utility (at least their trial version) won't allow such a file to be opened.
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12/28/2006 05:32:25 AM · #9 |
I get the same message, even when I DO use separate exporsures :/
June
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12/28/2006 05:47:27 AM · #10 |
From what I have tried to do with CS2, I use save for the web, I have tried with 10.2 megapixel images without resizing and when it tells me that the file is too big, I ignore it and do it anyway since my computer seem to handle it. If you wanted to try this for a challenge or practice, you could resize it smaller then save for the web since its not for a print. When I open from raw at different exposure values and save for the web, I make sure to save it some of order so that when I see the files in Merge to HDR and have to maually set the exposures I know the order. For example a -4 exposure I would name 1.jpg and then -3 exposure would be 2.jpg etc... Save for web will strip exif data and if you work with tiffs, I have heard running it through neat image and saving will do it also, but I haven't tried.
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12/28/2006 07:03:32 AM · #11 |
Originally posted by lesgainous:
I work with 16-bit TIFF images as long as possible before I "save to web".
How does one remove EXIF from a TIFF file?
The Opanda utility (at least their trial version) won't allow such a file to be opened. |
Try exifer. You might not necessarily need to strip all the exif information, maybe just clear the exposure fields or change them to suitable dummy values. |
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12/28/2006 07:29:02 AM · #12 |
Originally posted by bod:
Originally posted by lesgainous:
I work with 16-bit TIFF images as long as possible before I "save to web".
How does one remove EXIF from a TIFF file?
The Opanda utility (at least their trial version) won't allow such a file to be opened. |
Try exifer. You might not necessarily need to strip all the exif information, maybe just clear the exposure fields or change them to suitable dummy values. |
Ya....just don't do that to your RAW images...especially if they are going to be used for verification of a challenge entry....'image has been modified'!!
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