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11/12/2006 07:22:22 AM · #1 |
Ok I have been looking at HDR photos, and i quite don't get it! What am I suposed to do? Make my photo look like it is a drawing? How do I get those colours to pop out like that? I really don't under stand!
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11/12/2006 07:35:20 AM · #2 |
| do some more searching. essentially, you use multiple exposures to get more intense images. Some will use bracketing, and then put them together so that the best parts of each image are used. It's pretty cool stuff, but I haven't tried doing anything with it yet. |
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11/12/2006 08:22:03 AM · #3 |
HDR stands for High Dynamic Range. Imagine yourself at the bottom of a canyon in the afternoon. You and your subject are in deep shadow and there is a gorgeous deep blue sky and nice clouds above you. You want to take a shot of your subject and include the sky with it. So go to a really wide angle lens and shoot in a vertical orientation. Your camera meters for the subject, you take the shot and the sky is totally blown out. So you remeter so that your sky is not blown out and you shoot. Now you subject is way too dark. This is because the dynamic range of the light in this situation is well beyond the capabilities of your camera to capture. What HDR does is allow you to take multiple exposure typically about 1 stop apart for about 5 or more exposures. You combine these exposures together in the computer using an imaging program such as PS CS2 or Photomatix. This final file that is created is known as the HDR image. It looks pretty goofy but only because it is a 32 bit image. You now have to tone map it or convert it to fit within the dynamic range of your monitor. This is the step that can make or break your image. I have played with CS2 but much prefer the way Photomatix handles the HDR file in the tone mapping. Here is a link to the finished image you see here along with the files it took to create that image.
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11/12/2006 08:46:57 AM · #4 |
I wish I could get HDR to work for me. I must be doing something wrong. I use CS2 and up to 5 exposures levels save them from RAW to 16-bit TIFF and go to HDR. CS2 starts to compile them and then near the end it comes up with an error, "not enough dynamic range" and closes out. jI have tried TIFF and .PSD!
What am I doing wrong? :( |
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11/12/2006 08:49:30 AM · #5 |
Originally posted by Southern Gentleman:
I wish I could get HDR to work for me. I must be doing something wrong. I use CS2 and up to 5 exposures levels save them from RAW to 16-bit TIFF and go to HDR. CS2 starts to compile them and then near the end it comes up with an error, "not enough dynamic range" and closes out. jI have tried TIFF and .PSD!
What am I doing wrong? :( |
If you are using the same RAW file for the five different exposure levels, that is the problem. The exif data is still in the file even though you adjusted the exposure level and the computer sees that. Save each of those exposures with the save for web command and it will strip the exif data. Then use those files to merger to HDR. Manually enter the exposure vaules when it asks for it.... |
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11/12/2006 08:54:28 AM · #6 |
Thank you, I will go and try that.
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11/12/2006 09:50:09 AM · #7 |
Originally posted by BHuseman:
Originally posted by Southern Gentleman:
I wish I could get HDR to work for me. I must be doing something wrong. I use CS2 and up to 5 exposures levels save them from RAW to 16-bit TIFF and go to HDR. CS2 starts to compile them and then near the end it comes up with an error, "not enough dynamic range" and closes out. jI have tried TIFF and .PSD!
What am I doing wrong? :( |
If you are using the same RAW file for the five different exposure levels, that is the problem. The exif data is still in the file even though you adjusted the exposure level and the computer sees that. Save each of those exposures with the save for web command and it will strip the exif data. Then use those files to merger to HDR. Manually enter the exposure vaules when it asks for it.... |
Didn't work for me for some reason.
Let me see if I have the steps right
1. Original RAW exposure -3 / -2 / -1 / 0 / +1 / +2 / +3.
2. Save all as jpg (does not give me an option to save for web at that point.
3. Open all 7 files and save for web.
4. Then compile HDR.
5. It ask me to put in exposure levels (don't know what to do there)
6. I enter step 1
7. Comes back not enough dynamic range to complete.
Any help would be great.
Thanks,
SDW
Message edited by author 2006-11-12 10:02:14. |
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11/12/2006 10:11:11 AM · #8 |
not enough dynamic range
pretty good selections here...
Also this thread which may have drowned due to other stuff which I have set to ignore.
24 Hour HDR challenge..... Oooooooooh here we go! |
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11/12/2006 10:56:26 AM · #9 |
Originally posted by Southern Gentleman:
Originally posted by BHuseman:
Originally posted by Southern Gentleman:
I wish I could get HDR to work for me. I must be doing something wrong. I use CS2 and up to 5 exposures levels save them from RAW to 16-bit TIFF and go to HDR. CS2 starts to compile them and then near the end it comes up with an error, "not enough dynamic range" and closes out. jI have tried TIFF and .PSD!
What am I doing wrong? :( |
If you are using the same RAW file for the five different exposure levels, that is the problem. The exif data is still in the file even though you adjusted the exposure level and the computer sees that. Save each of those exposures with the save for web command and it will strip the exif data. Then use those files to merger to HDR. Manually enter the exposure vaules when it asks for it.... |
Didn't work for me for some reason.
Let me see if I have the steps right
1. Original RAW exposure -3 / -2 / -1 / 0 / +1 / +2 / +3.
2. Save all as jpg (does not give me an option to save for web at that point.
3. Open all 7 files and save for web.
4. Then compile HDR.
5. It ask me to put in exposure levels (don't know what to do there)
6. I enter step 1
7. Comes back not enough dynamic range to complete.
Any help would be great.
Thanks,
SDW |
After you convert from RAW and choose open, you can't go to file and choose save for web?
You need to get rid of the exif data. That is the only way that I know how to do it. |
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11/12/2006 02:25:03 PM · #10 |
I've found the best and quickest way for me to strip EXIF data is through photoshop:
1. Open file you wish to strip
2. Select all (Crtl+A) and then copy (Crtl+C).
3. Create new file (Crtl+N). Just click OK on the box, as it will auto-size using the size of what you've selected.
4. Paste (Crtl+V)
5. This new picture will be without the camera EXIF data; you can save this picture as-is, or just leave it open to play with.
Sorry for all of the MAC users out there; I don't know the MAC shortcut commands, but I'm reasonably sure they're very close to the Windows version. |
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11/12/2006 02:28:04 PM · #11 |
Southern,
Can you post the images that you are trying to merge? It is not a good idea to save as a jpeg. You want to stay in the 16 bit realm. The dynamic range available in 16 bit mode greatly surpasses what is in 8 bit. If you are indeed having a problem with the exif data, then open your RAW file in 16 bit mode, select all, copy, gor to file new, and paste what you just copied to a new document, save as a 16 bit tiff file. The key is keeping the 16 bits of information. The other problem you may be having is that there really only maybe a 6 stop difference in the true dynamic range of your captures. If this is true then only 2 images would suffice to create your HDR image. So like I was saying can you post your troubled files? I could take a look at them and let you know. |
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11/12/2006 02:33:15 PM · #12 |
Originally posted by jaergo:
I've found the best and quickest way for me to strip EXIF data is through photoshop:
1. Open file you wish to strip
2. Select all (Crtl+A) and then copy (Crtl+C).
3. Create new file (Crtl+N). Just click OK on the box, as it will auto-size using the size of what you've selected.
4. Paste (Crtl+V)
5. This new picture will be without the camera EXIF data; you can save this picture as-is, or just leave it open to play with.
Sorry for all of the MAC users out there; I don't know the MAC shortcut commands, but I'm reasonably sure they're very close to the Windows version. |
LOL, is there an echo in here? You must have posted while I was writing my post. Well atleast there is a lot of help available in here.
The keyboard shortcuts for the Mac are exactly the same except instead of the (Crtl) key you use the (Command) or aka (Apple) key plus the corrosponding letter. |
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11/12/2006 02:54:20 PM · #13 |
Jtlee321,
I saw your post up after I was finished writing mine. But you're right; at least there's a lot of helpful information that we've posted. |
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11/12/2006 06:07:17 PM · #14 |
this clarifies the definition as related to el greco & monet ;}
//www.cybergrain.com/tech/hdr/
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11/14/2006 12:07:31 AM · #15 |
hey, you should use Photomatix in creating HDR instead of PS. It's way easier.
Here you can find this program: //www.hdrsoft.com/
then Neat Image and then PS, voluntarily. |
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11/14/2006 12:41:30 AM · #16 |
Originally posted by junior_z:
hey, you should use Photomatix in creating HDR instead of PS. It's way easier.
Here you can find this program: //www.hdrsoft.com/
then Neat Image and then PS, voluntarily. |
AND they offer a 70% academic discount if you are a student
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11/14/2006 01:17:53 AM · #17 |
Originally posted by Southern Gentleman:
Didn't work for me for some reason.
Let me see if I have the steps right
1. Original RAW exposure -3 / -2 / -1 / 0 / +1 / +2 / +3.
2. Save all as jpg (does not give me an option to save for web at that point.
3. Open all 7 files and save for web.
4. Then compile HDR.
5. It ask me to put in exposure levels (don't know what to do there)
6. I enter step 1
7. Comes back not enough dynamic range to complete.
Any help would be great.
Thanks,
SDW |
- Don't save as jpg. Save as 16 bit tiffs instead.
- When you save the files copy and paste in a new document first so that it strips the exif data. You have to do this because the software will think they are all exposed the same since their exif data all read the same. This doesn't happen if you use multiple RAW files that were bracketed to begin with.
Message edited by author 2006-11-14 01:18:56. |
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11/19/2006 06:44:06 PM · #18 |
i can't make this work. copied into new document and saved. exif was still there!!!!!!!!
Kev
gonna try again tomorrow
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11/19/2006 07:19:10 PM · #19 |
kevrobertson -
Give PhotoMatix a shot. There's a freeware version to experiment with, presumably with the intent that if you like you, you'll want to buy the full product.
Point is though, that the freeware version does averaging and HDR creation - excellent to practice with, no watermark. (I'm an HDR newbie, but have been having fun experimenting with PhotoMatix this week.) PhotoMatix The tutorials alone are worth the visit to the site!
ralfw
Message edited by author 2006-11-19 19:20:14. |
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