Quote from: Oshyan on July 22, 2010, 03:28:12 AM
The reference picture is not 2 sun angles, rather it is HDR tone mapped. You can do this with newer versions of Photoshop, or with Photomatix, or perhaps best of all with the new free beta of Oloneo Photo Engine: http://www.oloneo.com/
Then just feed it an EXR file and play with some tone mapping.
- Oshyan
One slight problem - I downloaded the beta, but I didn't see an option to open EXR files - did I miss something?
Did you e-mail them about this?
Quote from: domdib on July 22, 2010, 05:07:45 PM
Quote from: Oshyan on July 22, 2010, 03:28:12 AM
The reference picture is not 2 sun angles, rather it is HDR tone mapped. You can do this with newer versions of Photoshop, or with Photomatix, or perhaps best of all with the new free beta of Oloneo Photo Engine: http://www.oloneo.com/
Then just feed it an EXR file and play with some tone mapping.
- Oshyan
One slight problem - I downloaded the beta, but I didn't see an option to open EXR files - did I miss something?
Hi domdib,
I extracted this from the Oloneo site:
File support, input
* Full Color Profile support for imported image
* Export Color Profile and bit depth:
* sRGB 8/16-bit
* Adobe RGB 8/16-bit
* ProPhoto RGB 8/16-bit
* Low dynamic image files (input):
* Jpeg
* 8-bit Tiff
* 16-bit Tiff
* Most Raw Photo formats (over 300 cameras supported)
* DNG
* High dynamic image files (input):
* Radiance
* OpenEXR*
File support, output
* Full Color Profile support for exported image
* Low dynamic image files (output):
* Jpeg
* 8-bit Tiff
* 16-bit Tiff
* High dynamic image files (output):
* Radiance*
* OpenEXR*
* File formats not supported in first beta (subscribe to newsletter to get the update)
Bob
Thanks for researching this Bob - so we'll have to wait a bit to see how it performs.
Quote from: domdib on July 23, 2010, 05:36:51 AM
Thanks for researching this Bob - so we'll have to wait a bit to see how it performs.
I would suggest subscribing to their newsletter ...they could be close.
Ah, sorry about that. Didn't see the "not supported in beta". So here's the alternative: save out the EXR, open it in Photoshop or some other editor that can give adjust exposure levels properly, and then save out several versions to something like TIFF and bring it into Oloneo as an image stack to create an HDR. The tricky part is finding/having/getting an app to do the re-exposure, one that supports EXR.
- Oshyan
Quote from: Oshyan on July 24, 2010, 01:47:52 AM
Ah, sorry about that. Didn't see the "not supported in beta". So here's the alternative: save out the EXR, open it in Photoshop or some other editor that can give adjust exposure levels properly, and then save out several versions to something like TIFF and bring it into Oloneo as an image stack to create an HDR. The tricky part is finding/having/getting an app to do the re-exposure, one that supports EXR.
- Oshyan
Thank you Oshyan. I have PS 6; hopefully it will work. I have made two TG2 versions (Canyonlands): one with sun at 7 degrees; one with sun at 4 degrees. I'll render each and save them as .exr files; open them in PS and check the exposures to see if they adjustment - then, save them as .tif files. I have not yet downloaded Oloneo. I hope two images would be sufficient. You suggested several images, I thought only two would be sufficient to depict a brighter terrain and a darker atmosphere.
Bob
PS 6 will work Bob (it's what I use), but only if you have the plug-in available from http://www.openexr.com/downloads.html
Quote from: domdib on July 24, 2010, 03:01:32 AM
PS 6 will work Bob (it's what I use), but only if you have the plug-in available from http://www.openexr.com/downloads.html
Thanks domdib. What is the name of the plug-in?
Near the bottom of the page:
OpenEXR Photoshop plugin for Win32:
OpenEXR_Photoshop-1.2.1.Win.zip
OpenEXR Photoshop plugin for OS X:
OpenEXR_Photoshop-1.2.1.Mac.sit
Unpack, and then put the plug-in in your Plug-ins folder in Photoshop 6
Listed are the following plug-ins for PS - Do I need them all? I have a PC:
Plugins
OpenEXR Photoshop plugin source code:
OpenEXR_Photoshop-1.2.1.Source.tar.gz
OpenEXR Photoshop plugin for Win32:
OpenEXR_Photoshop-1.2.1.Win.zip
OpenEXR Photoshop plugin for OS X:
OpenEXR_Photoshop-1.2.1.Mac.sit
OpenEXR Shake 3.x plugin source code:
OpenEXR_Shake-1.0.1.tar.gz
No, just the Win32 one if you have Windows, or the OS X one if you have a Mac.
Quote from: domdib on July 24, 2010, 03:19:24 AM
No, just the Win32 one if you have Windows, or the OS X one if you have a Mac.
Thanks. I wondered about the 'source code' one.
Yesterday, I downloaded the plug-in for Photoshop from Lucas Films for HDR called 'OpenEXR for Photoshop 1.2.1' to be used with 'Oloneo' ...this is for HDR. I placed it in the Photoshop folder; but, when I try to find it when opening Photoshop, I can't find it ...what's up with this?
Ok, I think I have it all figured out and ready to try using Oloneo. First need to do two renders of the Canyonlands image; then, prepare the images in Photoshop in advance of the work in Oloneo. Thanks to all for your help,
Bob, you're still attached to the original idea (which is erroneous) of multiple sun angles. The example image you posted originally is not an amalgam of multiple exposures at different times of day (and thus different sun angles), it is several exposures taken very close together and then combined and tone mapped in a program like Oloneo. This is a very common and widely used technique these days. Not that combining images with multiple sun angles is a *bad* idea, it's just not what was done in the example you provided, and it's unnecessary if that's the effect you want to achieve.
But if you're already doing 2 renders, you don't need to save it as EXR. You can just save as TIFF. The reason I suggested EXR is because it is a high dynamic range format, and you can make multiple captures from it at different exposure levels (mimicking the process of taking several shots of a real-life scene), saving each as e.g. TIFF. This avoids the extra time to render multiple versions of the scene at different exposures. You can then combine these "low dynamic range" images into a single high dynamic range image and do tone mapping in Oloneo as originally suggested. But again if you're already doing multiple renders, there's no point in saving to EXR and going through the intermediate step of the Photoshop conversion. The point with the EXR and Photoshop workflow is to make *multiple exposures from a SINGLE file*. Not to render several times and save to EXR then convert to TIFF and merge back into HDR.
- Oshyan
I don't know what I'd do without you Oshyan. I guess my brain works in different ways than most. I got your message and will concentrate and apply your message. I can't thank you enough and really appreciate your help.
Bob
No problem. Something else you can try is to play with the Oloneo settings just on the original image you rendered (it will load a JPG for example). Although it is not as good as working with a high dynamic range image like a TG2 EXR, you can still get some of the effect you might be looking for.
- Oshyan
That sounds great Oshyan, especially realizing that there are multiple options here. The link I had made early on regarding the 3D navigatable panorama had made quite an impression on me. Having the ability to achieve these kinds of results with Oloneo; or, OpenEXR with Oloneo and Photoshop may broaden the image possibilities. Thanks again!