Magic Lantern Forum

Using Magic Lantern => Post-processing Workflow => HDR and Dual ISO Postprocessing => Topic started by: painya on June 02, 2014, 08:07:52 AM

Title: Problems with dual ISO
Post by: painya on June 02, 2014, 08:07:52 AM
Hey, it seems that this plug in isn't recognizing my shadow recover ISO. I believe it was 800 in this image.
(http://www.upload.ee/image/4084274/20140601-IMG_0762.jpg)
(http://www.upload.ee/image/4084276/20140601-IMG_0762-dualiso.jpg)
I also have an image that is just at ISO 100 and the same shot. It matches the processed one almost perfectly.
Edit: Running v2.1
Here's the image in original form
https://www.dropbox.com/sh/9631r7ibc6e0h05/AABnzLDZ1XOvVPw7s0AuoQeFa
Title: Re: Problems with dual ISO
Post by: Walter Schulz on June 02, 2014, 08:11:57 AM
Can you provide a link to the Dual ISO file (= Out of cam)?
Title: Re: Problems with dual ISO
Post by: painya on June 02, 2014, 08:15:56 AM
Quote from: Walter Schulz on June 02, 2014, 08:11:57 AM
Can you provide a link to the Dual ISO file (= Out of cam)?
Done
Title: Re: Problems with dual ISO
Post by: Walter Schulz on June 02, 2014, 08:22:22 AM
I asked for the file out-of-the-cam, not a processed one.
Title: Re: Problems with dual ISO
Post by: painya on June 02, 2014, 08:25:46 AM
All i did was change the WB. I will upload one and post it after reading metadata from file.
Title: Re: Problems with dual ISO
Post by: Walter Schulz on June 02, 2014, 08:27:29 AM
If this was the only change you did: Check your computer for viruses and trojans.
Title: Re: Problems with dual ISO
Post by: painya on June 02, 2014, 08:30:17 AM
http://www.upload.ee/files/4084297/IMG_0753-dualiso.DNG.html (http://www.upload.ee/files/4084297/IMG_0753-dualiso.DNG.html)
Here is the original, unmolested file ;D
Title: Re: Problems with dual ISO
Post by: Walter Schulz on June 02, 2014, 08:34:12 AM
It's not.
Title: Re: Problems with dual ISO
Post by: painya on June 02, 2014, 08:38:03 AM
Ok, I pulled this directly off of the SD card. Hopefully this is it. Thank you for your help
http://www.upload.ee/files/4084307/IMG_0763.CR2.html
Edit: Is Upload.ee changing the format to Tiff?
Title: Re: Problems with dual ISO
Post by: painya on June 02, 2014, 08:41:55 AM
This should work
https://www.dropbox.com/sh/9631r7ibc6e0h05/AABnzLDZ1XOvVPw7s0AuoQeFa
Title: Re: Problems with dual ISO
Post by: Walter Schulz on June 02, 2014, 08:53:03 AM
Quote from: painya on June 02, 2014, 08:07:52 AM
Here's the image in original form
https://www.dropbox.com/sh/9631r7ibc6e0h05/AABnzLDZ1XOvVPw7s0AuoQeFa

No, it is not. Your JPEG is 0762, linked file is 0763.

Let us start over: What is your problem in which file?
Title: Re: Problems with dual ISO
Post by: painya on June 02, 2014, 09:03:04 AM
When I tried to convert the Dual ISO file the shadows were lost. Would you like me to upload 0762?
Title: Re: Problems with dual ISO
Post by: painya on June 02, 2014, 09:06:41 AM
(http://www.upload.ee/image/4084344/20140602-Capture.jpg)
Here is what my problem is. I lose the shadow recovery.
Title: Re: Problems with dual ISO
Post by: Walter Schulz on June 02, 2014, 09:40:55 AM
That's not a LR plug-in error. This plug-in is a wrapper for cr2hdr and cr2hdr is discussed here! (http://www.magiclantern.fm/forum/index.php?topic=7139.msg117595;topicseen#msg117595)
Title: Re: Problems with dual ISO
Post by: a1ex on June 02, 2014, 10:36:35 AM
Looks OK to me in ufraw, with both cr2hdr versions (16 and 20 bit). However, the DR of the scene looks too high to me (I couldn't really get a natural-looking result) and the sky was a little overexposed.

(http://a1ex.magiclantern.fm/bleeding-edge/isoless/IMG_0763.jpg) (http://a1ex.magiclantern.fm/bleeding-edge/isoless/IMG_0763-20.jpg)

My settings for the HDR script (http://www.magiclantern.fm/forum/index.php?topic=7022):


overall_bias = 0                                    # exposure compensation, in EV
highlight_level = 20000                             # decrease for stronger highlight recovery
midtone_level = 20000                               # median exposure
shadow_level = 50000                                # increase for stronger shadow recovery
ev_step = 1                                         # EV step size for bracketed exposures (larger values may cause halos, smaller values are very slow)
fullsize = True                                     # develop full size (turn off for higher speed)
ufraw_options = "--temperature=6000 --green=1 " \
                "--restore=lch --saturation=1.5 "   # customize ufraw parameters (tip: you can also open a file in ufraw, tweak settings in the GUI and save an ID file)
expo_blender = "enfuse --gray-projector=value"      # customize enfuse parameters (tip: tweak --exposure-sigma to adjust contrast and highlight recovery behavior)
Title: Re: Problems with dual ISO
Post by: painya on June 02, 2014, 04:43:26 PM
I just used the non-plug in Cr2Hdr found www.magiclantern.fm/forum/index.php?topic=8738.0 (http://www.magiclantern.fm/forum/index.php?topic=8738.0) and I still am not achieving your results A1ex. I see you used your automatic colorgrading script as well, but did you use a different Cr2Hdr than I did?
Title: Re: Problems with dual ISO
Post by: Audionut on June 02, 2014, 05:20:22 PM
Use the cr2hdr from the author:  http://www.magiclantern.fm/forum/index.php?topic=7139.0

I got the same results as a1ex with LR.
https://dl.dropboxusercontent.com/u/34113196/ML/forum_stuff/painya.JPG
Title: Re: Problems with dual ISO
Post by: painya on June 03, 2014, 02:43:47 AM
Quite clearly this is my issue and I am doing something wrong. Here I have a screen capture video (highly compressed, but you get the idea) Showing exactly what I do. Any issues you see (PS. it may seem different, but I dropped the image from the SD card, to the folder onto Cr2HDR.)
Thanks again guys
https://www.dropbox.com/s/bkr2k9v7a5xef8j/video.avi
Sorry about the crappy quality
Title: Re: Problems with dual ISO
Post by: Audionut on June 03, 2014, 08:27:28 AM
Look at my screenshot again, and make note of the exposure adjustments.
Title: Re: Problems with dual ISO
Post by: painya on June 03, 2014, 04:33:35 PM
Quote from: Audionut on June 03, 2014, 08:27:28 AM
Look at my screenshot again, and make note of the exposure adjustments.
Ah, I see. Thank you for resolving this!