Messages

Thank you for taking time locking at my spot issue.
I will in future use more often the noise reduction that i disabled  for the session of evening photography i did with dual iso. I think it is interesting to see if noise reduction will apply with dual iso alternative. Look forward to it . For years i did use Raw therapee which is an exellent editor and the options you mentionned are well convincing me for a new download of RT.
I wish you, mr Milligan and the ML team a merry christmas and a happy new year

Thank you again for replying. I have only DPP and Adobe clouds as editors so i have uploaded CR2 files om my google drive.

https://drive.google.com/folderview?id=0B_x5LY06_X9zY0RuTmtaRG9iZFE&usp=sharing

I hope the link is working. I have included:
2 of CR2 files taken at same aperture and same ISO as the dual iso image also included.
2 of CR2 files taken at same shutter speed and same ISO as the dual iso image also included.

I can  clearly see some spots (dead pixels?) on the normal CR2 and I definitely see spots on CR2 the dual iso photos.
It is raining so the photos are taken outside home just for a test purpose but I tried to have enough range between shadows and higlights. Noise reduction was off.
Have a nice evening.

Thank you for your reply.
I have tried the fix pixel option in cr2hdr with bad, really bad and black-bad-pix. The <really bad > option washed out a lot spots and details as it was mentioned in the plugin documentation. I am not sure that I will go that way.
I could not see a great difference between using the bad pixel option and the previous development without bad pixel alternative chosen. I have done at least 8 dead pixel cleaning with the dust sensor cleaning,and have had the long exp.noise reduction on for every shot, for every exposure time.
To check the sensor I also did single shots with the lens cap on, noise reduction on at different ISO settings. Then I proceed the photos in photoshop and in an HDR program with quite high settings. I could detect some "spots" which may be dead pixels. The thing is that i could not see as many spots on the "normal photos" even in terrible HDR state as on the dual iso shots taken earlier. I understand that if i had taken dual iso photos these dead pixels could confuse the hotpixel removal algorithm. I will now try to take photos in the daylight with shadows areas to check if the spots are coming from long exposures or not.
Thank you for your help.

  I wonder if somebody have experienced the following problems when taking photos with Dual Iso and may have a solution for the problem.
I use a Canon 5D mark ii and the 24-105mm for the photos I ask help for.
In ML I activated the modules Auto ETTR with the link to Dual Iso "on" and the Dual Iso also activated. If i remember well i had chosen the iso 100/800 alternative. The camera was on A (aperture), iso 100 and WB on sunny. Photos are taken with a tripod and exposition time is 30 seconds.
I then develop CR2 files in cr2hdr and the DNG files in photoshop. The photos show a great amount of green and dark spots, i call them spots as i cannot find a better definition. These spots were also visible in the Dual Iso original CR2 file. I run a new development in cr2hdr-20bit in case but the result was the same. Before the photo session I had done a manually cleaning of the sensor for both dust and dead pixels. I have also taken several photos from ISO 100 to iso 3600 in the "normal" way without ML installed and the photos are clean from spots of any nature. I did a new trial today and Dual Iso photos show the same type of spots.
Here you can find  a link to photos, No PP is done as i wanted to keep them as identical as DNG as possible
_MG_8039-spots-Dual Iso by chrfrad, on Flickr

_MG_8025 by chrfrad, on Flickr

Please note that I am not a pixel peeper. Download and review the photos for better understanding of the problem. i appreciate very much is somebody can read this message and maybe help me. Thank you in davance.