|
|||
|
I'm not sure why you say you have to shoot in RAW to do tonemapping. It's possible to open a JPEG in Photoshop and save it as a TIFF and then tonemap it.
__________________
Canon EOS 350D Sigma EX 105mm f/2.8 Macro, Sigma 70-300mm f/4-5.6 APO, Canon 18-55mm f/3.5-5.6 Kenko AF Extension Tubes (12, 20, 36mm) Sigma EM-140DG Macro Flash http://plouie.deviantart.com |
|
|||
|
Yeah, tonemap the tiff in photomatix.
__________________
Canon EOS 350D Sigma EX 105mm f/2.8 Macro, Sigma 70-300mm f/4-5.6 APO, Canon 18-55mm f/3.5-5.6 Kenko AF Extension Tubes (12, 20, 36mm) Sigma EM-140DG Macro Flash http://plouie.deviantart.com |
|
||||
|
I know little on the subject, but what i know seems to suggest that tonemapping a file that was originally an 8-bit JPEG will not work no matter what format you convert it to. This is because an 8 bit JPEG (like JPEG's that Camera's output pictures to) has a limited tonal range-thus the camera has to clip the highlights and the dark portions of the photograph. So when the file is saved directly to JPEG format from the camera this hightlight/lowlight information is lost and cannot be retreived by converting the file to Tiff format which allows a greater tonal range. The reason it works with RAW is because a RAW file does not clip the highlights/lowlights, so it is possible for software to extract all the information and compress it into a JPEG without clipping, this process is called tonemapping-----or at least that is my understanding of the tonemapping process.
However i'm happy to be proven wrong, so if someone would like to explain how tonemapping a JPEG works-please tell
__________________
Pentax K100D Super, Sigma 18-50mm, 70-300mm, Cosinon 55mm f/2.8 (m42), Makinon 200mm f/3.3 Check out: My Flickr---Please feel free to re edit and re-post my images on DPS Forums |
![]() |
| Bookmarks |
| Thread Tools | |
| Display Modes | |
|
|
Each day we send out a quick email to thousands of DPS readers to notify them of updates. This email is just short excerpt of the first few lines of our latest post with a link if you want to read it all. You can unsubscribe from this this service at any time.
This service is provided by a third party (Feedburner) and you can subscribe to it by leaving your email address in the following field and confirming your subscription when you get an email asking you to do so.
Enter your email address for
Daily Updates:
For those wanting a weekly summary of what happens on this site this free email newsletter is probably your best option. It includes a summary of the tips posted to the site each week. This newsletter is subscribed to by over 25000 readers (many who also subscribe to the other options above) - come join the community!
To subscribe to this weekly newsletter simply add your email address to the following field and then follow the confirmation prompts. You will be able to unsubscribe at any time.
Enter your email address for
Free Weekly Newsletter: