Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

bclaff

EOS M6 Mark II
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

Point22 said:
...
Now I would like the answer.. Mr bclaff is this 11,8DR or 8-9 PDR ?? Thx
Jpeg images don't have PDR.
You can use raw data to determine PDR.
If I inspected the raw file for that image I'm confident it would have no more than 9.11 stops of PDR.
The blacks are slightly crushed in that image to hide the fact that noise would be apparent.
Not a complaint just an observation, we crush black at some level on almost all images.
FWIW, I have no problem with this amount of PDR as I rarely have issues with high dynamic range scenes.
 

IglooEater

EOS R
Nov 15, 2014
904
0
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

Point22 said:
bclaff said:
Aglet said:
...If anyone has a Stouffer wedge it would be interesting to see the test done. ....
Many years ago when I was developing the Photographic Dynamic Range (PDR) test I used Stouffer wedges.
I'll try to drag one out and do a test but ...
I can assure you that the test target I developed for PDR produces equivalent results.
(I devised it because I could not depend on my contributors to have a Stouffer wedge.)
The PDR target has 77 "magenta" patches.
This color is chosen to make the red, green, and blue channels more equally exposed.
Since the channels are processed separately the fact that it is not "gray" is not material.

Regards
Now I would like the answer.. Mr bclaff is this 11,8DR or 8-9 PDR ?? Thx

I'd be interested in seeing the same from say a 6D or a 5D III. That looks way more malleable than I'll ever need.
 

candyman

EOS 5D Mark IV
Sep 27, 2011
2,198
7
www.flickr.com
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

I just took a picture at 160 ISO
I got a strange result in LR when using the graduaded filter to bring down the highlights and exposure in the sky.
The clouds become pink....

I am puzzled. It seems I do not have a good copy of this camera.

What do you think?

https://www.dropbox.com/s/chl2j77x23nvk7t/IMG_0134.CR2?dl=0

EDIT: if you try the same steps in LR with 100 ISO you don't have pink color in the sky.

https://www.dropbox.com/s/1u5l62ezto6nwm9/IMG_0133.CR2?dl=0
 

Mikehit

EOS R6
Jul 28, 2015
3,323
512
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

I don't know if you intended to show the two shots but you posted the same link twice
 

Mikehit

EOS R6
Jul 28, 2015
3,323
512
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

The links have different names in your post but I am seeing the same photo.
 

Mikehit

EOS R6
Jul 28, 2015
3,323
512
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

If I cut and paste the name of the second link it works - looks like you change the link test without actually changing the URL in your link definition

As for the pink - it looks like the photos were taken at different angles so maybe it is something to do with light directionality. I believe some lenses have coatings that act a bit like polarising so maybe this is the reason?
 

candyman

EOS 5D Mark IV
Sep 27, 2011
2,198
7
www.flickr.com
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

Mikehit said:
The links have different names in your post but I am seeing the same photo.
I do not use dropbox often. It acts a little bit strange but now I succeeded to put the right link for the 100 ISO file.
 

candyman

EOS 5D Mark IV
Sep 27, 2011
2,198
7
www.flickr.com
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

Mikehit said:
If I cut and paste the name of the second link it works - looks like you change the link test without actually changing the URL in your link definition

As for the pink - it looks like the photos were taken at different angles so maybe it is something to do with light directionality. I believe some lenses have coatings that act a bit like polarising so maybe this is the reason?


Wait ...I will put the same photo angle but at 100 ISO - file _133


EDIT: I don't succeed to make this file downloable. It is there in dropbox but without the 'paperclip' allthough I can download it from dropbox. It will take me some time to figure it out....
 

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Sporgon

5% of gear used 95% of the time
CR Pro
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

Dropbox may not be used to displaying raw files from the 6DII yet !

My only comment on the low iso shot is that image 106 shows why you shouldn't under expose these Canons if you want to pp the image afterwards. I recon that if you had shot the frame with the intention of lightening up / softening shadows in pp you are a good 2 stops under where you could have been, and this makes a massive difference to the dark tones.

Image 134 where you have pushed the exposure further to the right is just fine. (Aside from the slightly odd tint in the sky ?). If you lift those blacks beyond what any normal person would want to do to the image it is perfectly fine.

I'd happily use one, but no way would I under exposed with it, as you can a Nikon.
 

candyman

EOS 5D Mark IV
Sep 27, 2011
2,198
7
www.flickr.com
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

I do not know what to do... :(
The file is there in Dropbox. I can download it myself form Dropbox but the public link reports a 404 - the file isn't there. But it is there!


I will try until the link works.


In the 100 ISO you can add the gradual filter and decrease the highlights in the sky without the clouds become pink. It seems something odd with the 160 iso...?
 

candyman

EOS 5D Mark IV
Sep 27, 2011
2,198
7
www.flickr.com
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

Sporgon said:
Dropbox may not be used to displaying raw files from the 6DII yet !

My only comment on the low iso shot is that image 106 shows why you shouldn't under expose these Canons if you want to pp the image afterwards. I recon that if you had shot the frame with the intention of lightening up / softening shadows in pp you are a good 2 stops under where you could have been, and this makes a massive difference to the dark tones.

Image 134 where you have pushed the exposure further to the right is just fine. (Aside from the slightly odd tint in the sky ?). If you lift those blacks beyond what any normal person would want to do to the image it is perfectly fine.

I'd happily use one, but no way would I under exposed with it, as you can a Nikon.


You are right about the first 3 images. I did some late evening shots not using appropriate settings. Maybe I need to delete them here from the forum.


The _134 and _133 photos however are exposed normal. And there is an odd pink appearance in ths sky for the 160 ISO. That is something I do not understand. I mean one should be able to make some pp on highlights without the effect of clouds becoming pink....
 

candyman

EOS 5D Mark IV
Sep 27, 2011
2,198
7
www.flickr.com
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

I am getting crazy from dropbox. The file is uploaded but still reports a 404 error when using the link to download.


Here are two screencaptures


- file _0133 at 100 ISO with heavily reduced higlights in the sky using the gradual filter
- file _0134 at 160 ISO - copied the photo setting for reduced highlights


No other settings were applied. All settings left to default
 

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neuroanatomist

I post too Much on Here!!
CR Pro
Jul 21, 2010
24,726
2,327
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

@candyman – could be LR (wouldn't be the first time Adobe handled new files badly), I'd try in DPP to see if you get the same issue. If so, contact Canon. Else, contact Adobe.
 

MayaTlab

EOS 90D
Oct 6, 2015
193
81
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

candyman said:
- file _0133 at 100 ISO with heavily reduced higlights in the sky using the gradual filter
- file _0134 at 160 ISO - copied the photo setting for reduced highlights

The ISO 160 shot is clipped in the highlights, according to Rawdigger, in the blue channel, and in one of the two green channels (that's weird to me, I thought that the two green channels usually clip at the same time ? But maybe there is something I don't understand here).

Then, this is combined with Adobe's particularly rubbish profiling of the camera. If you switch to the "camera neutral" profile, for example, you will see a noticeable improvement. If you export the file as DNG and import it in Capture One (which doesn't support the 6DII yet, so it's only going to get better in C1), the pink issue becomes quite negligible.

The following photo (your ISO 160 shot) has the same settings applied, except that one uses the "camera neutral" profile, the other "Adobe standard".
 

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candyman

EOS 5D Mark IV
Sep 27, 2011
2,198
7
www.flickr.com
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

neuroanatomist said:
@candyman – could be LR (wouldn't be the first time Adobe handled new files badly), I'd try in DPP to see if you get the same issue. If so, contact Canon. Else, contact Adobe.


Thank you Neuro for your suggesting.
I opened both files in DPP 4.6.30. I don't work that often with DPP so I am not sure how to partially process an area of an image in DPP. But I decreased the highlights and brightness in both images and the _0134 image does not have pink clouds like it has in LR.
It really looks like it is an error in LR 6.12 on the 6D MKII processing. But, I am not an Adobe & processing specialist. I am not convinced yet.....I want to...... since I hate to retrun the camera :(
 

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Sporgon

5% of gear used 95% of the time
CR Pro
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

neuroanatomist said:
@candyman – could be LR (wouldn't be the first time Adobe handled new files badly), I'd try in DPP to see if you get the same issue. If so, contact Canon. Else, contact Adobe.

+1,

It'll be the raw converter not the camera. I thought this was all part of the pleasure in being a very early adopter ! ;)
 

candyman

EOS 5D Mark IV
Sep 27, 2011
2,198
7
www.flickr.com
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

I am not so much a shadow lifter and DRone but interesting to compare DPP and LR in this regard


First Lightroom
Second DPP
 

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candyman

EOS 5D Mark IV
Sep 27, 2011
2,198
7
www.flickr.com
Re: Canon EOS 6D Mark II Dynamic Range Talk & Sample Images

MayaTlab said:
candyman said:
- file _0133 at 100 ISO with heavily reduced higlights in the sky using the gradual filter
- file _0134 at 160 ISO - copied the photo setting for reduced highlights

The ISO 160 shot is clipped in the highlights, according to Rawdigger, in the blue channel, and in one of the two green channels (that's weird to me, I thought that the two green channels usually clip at the same time ? But maybe there is something I don't understand here).

Then, this is combined with Adobe's particularly rubbish profiling of the camera. If you switch to the "camera neutral" profile, for example, you will see a noticeable improvement. If you export the file as DNG and import it in Capture One (which doesn't support the 6DII yet, so it's only going to get better in C1), the pink issue becomes quite negligible.

The following photo (your ISO 160 shot) has the same settings applied, except that one uses the "camera neutral" profile, the other "Adobe standard".


I am not sure what you mean. Can you give me more information?
 
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