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DPChallenge Forums >> Photography Discussion >> Merge HDR question
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 11/19/2006 08:51:40 PM · #1
when I am doing merge HDR in PS, I get message "does not have enough dynamic data" what does it mean? How can I fix this problem?

Message edited by author 2006-11-19 20:52:00.
 11/19/2006 09:06:35 PM · #2
Try changing the mode to 16 bit -raw digital camera image file.
See if that helps. If not post back.
 11/19/2006 09:30:08 PM · #3
Originally posted by justine:
Try changing the mode to 16 bit -raw digital camera image file.
See if that helps. If not post back.


I am sorry but how can I do that?
 11/19/2006 09:31:43 PM · #4
CS2 Image/mode
 11/19/2006 09:37:13 PM · #5
Originally posted by pgirish007:
when I am doing merge HDR in PS, I get message "does not have enough dynamic data" what does it mean? How can I fix this problem?


You can't used the same picture/raw file in cs2. Not unless you "save for web".

Message edited by author 2006-11-19 21:37:25.
 11/19/2006 09:43:35 PM · #6
Originally posted by justine:
CS2 Image/mode


I guess I still have some error message "There is not enough dynamic range in these photographs to construct a useful HDR image". I am not sure what is missing in here.

Message edited by author 2006-11-19 21:44:09.
 11/19/2006 10:10:57 PM · #7
See the post directly above yours. PSCS2 HDR capability checks the exif data of the image, if the exif shows it to be too similar in exposure settings it will give you the error message you have been getting.

To get around this save your files without exif data -- one method of doing this (as mentioned) is to use 'save for web'.

David
 11/19/2006 10:24:11 PM · #8
I had a better understanding after reading this info on HDR and PS CS2. //www.luminous-landscape.com/tutorials/hdr.shtml

Hope this can help.

11/19/2006 11:44:28 PM · #9
GOD - I'm SOOOO glad somebody posted that. I could NOT figure out why I was getting that same error message. Thanks, guys!!
 11/20/2006 07:52:18 AM · #10
I think you can solve the problem by opening the darkerst picure in the raw converter and convert it with a exposure of -1. Than save it as a .tiff

You can do the same with the lightest picture but with an exposure of +1.

With this 'trick' you can make a HDR of one image too.
 11/20/2006 07:42:12 PM · #11
Originally posted by Perrush:

With this 'trick' you can make a HDR of one image too.

I'm just learning about HDR. Would you explain what would be accomplished by making an HDR from one image.
 11/20/2006 08:06:04 PM · #12
Originally posted by JuliBoc:
Originally posted by Perrush:

With this 'trick' you can make a HDR of one image too.

I'm just learning about HDR. Would you explain what would be accomplished by making an HDR from one image.


Open an image in a RAW converter and look at it with -1 exposure (or even -2) and then do the same for +1 or +2. Look for areas of difference. Sometimes you'll like parts of the photo with -1 and parts with +1. That's what an HDR (or whatever we're calling it when done from one image) accomplishes.
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