Skip to main content

⚠️ Please note that this topic or post has been archived. The information contained here may no longer be accurate or up-to-date. ⚠️

Darker raws

NN635542509564695260UL
Hello.
When I open for first time a Raw with C One, this image is shown darker (one/two stops) than I open it in Lightroom, Dpp (canon), Perfect Photo suite, DxO.
While the first second the image is shown as I shooted, well exposed,, but quickly it appear dark
I don't launch any preset.
I don't understand what is happening.
0

Comments

16 comments

Date Votes
  • Jim_DK
    Do you have highlight tone priority enabled?
    0
  • NN635542509564695260UL
    Glups.
    I don't know.
    Where can I disable highlight tone priority ? Thank you
    0
  • Michael Sonshine
    I am also curious as to where the "Highlight Tone Priority" setting might be. However let me ask some different questions.

    Are you using sessions or catalogs or are you just navigating to the image folder and adjusting there? And, if you are using catalogs or sessions, do you have the Auto Adjustment checkbox checked? And, if so, what is checked at Adjustment -> Auto Adjustments?

    As I understand it, the following are true. If you are not using catalogs or sessions, then your raw images are not being auto adjusted and hence will be darker than when viewed in other editors like Lightroom (which does automatically adjust your raw images). Similarly if you are using catalogs or sessions, but don't have the Auto Adjust checkbox checked, then no adjustments will be made on your raw images. And, if you do have the Auto Adjust checkbox checked, then only the items at Adjustment -> Auto Adjustments will be applied.

    Hope this helps.
    0
  • SFA
    Mention of DPP suggests you are using a Canon camera.

    Assuming it's not an old Canon it may have a feature called "Highlight Tone Priority", probably set as a Custom Function but perhaps elsewhere too.

    This will do things to the images processed in camera (jpgs). The preview images embedded in the RAW (CR2) files are jpgs processed according to the in-camera settings. First display of the "raw" image is usually the embedded jpg and in C1's case this will be rapidly replaced by a RAW conversion which will replace the embedded jpg.

    DPP would, I assume - I have not checked as I have never used the HTP feature in my Canon bodies, have some code that would make use of the "Highlight Tone Priority" adjustment instructions in the RAW file.

    However the other applications may simply be treating the basic RAW data with the HTP adjustment added as the only RAW data, so in effect pre-processing the image for you. I don't know. I would guess that Jim_DK will be able to explain what happens within Capture One if you do somehow have HTP set ON.

    HTH.



    Grant
    0
  • Michael Sonshine
    [quote="SFA" wrote:
    Mention of DPP suggests you are using a Canon camera.

    Assuming it's not an old Canon it may have a feature called "Highlight Tone Priority", probably set as a Custom Function but perhaps elsewhere too.
    Grant

    Oh, of course. The post was about the Highlight Tone Priority setting on the camera, not in CO. I had forgotten all about that.

    But that setting would be applied to the image in the camera and I would think that any in-camera adjustment like that would show up in all image processors, not just CO.
    0
  • NN635542509564695260UL
    [quote="MikeFromMesa" wrote:
    I am also curious as to where the "Highlight Tone Priority" setting might be. However let me ask some different questions.

    Are you using sessions or catalogs or are you just navigating to the image folder and adjusting there? And, if you are using catalogs or sessions, do you have the Auto Adjustment checkbox checked? And, if so, what is checked at Adjustment -> Auto Adjustments?

    As I understand it, the following are true. If you are not using catalogs or sessions, then your raw images are not being auto adjusted and hence will be darker than when viewed in other editors like Lightroom (which does automatically adjust your raw images). Similarly if you are using catalogs or sessions, but don't have the Auto Adjust checkbox checked, then no adjustments will be made on your raw images. And, if you do have the Auto Adjust checkbox checked, then only the items at Adjustment -> Auto Adjustments will be applied.

    Hope this helps.


    Thank you for your response.
    I only use one catalog and session. Always are the same.
    Of course, Adjustement >Auto adjust > doesn't show any item checked
    0
  • NN635542509564695260UL
    [quote="MikeFromMesa" wrote:
    [quote="SFA" wrote:
    Mention of DPP suggests you are using a Canon camera.

    Assuming it's not an old Canon it may have a feature called "Highlight Tone Priority", probably set as a Custom Function but perhaps elsewhere too.
    Grant

    Oh, of course. The post was about the Highlight Tone Priority setting on the camera, not in CO. I had forgotten all about that.

    But that setting would be applied to the image in the camera and I would think that any in-camera adjustment like that would show up in all image processors, not just CO.

    My Cannon 1Dx has not "Highlight Tone Priority", ticked.
    This case concerns only ( I believe in my intuition) C One
    Thank you
    0
  • Michael Sonshine
    [quote="NN635542509564695260UL" wrote:

    Of course, Adjustement >Auto adjust > doesn't show any item checked

    Does not show any item checked? If nothing is checked then there is no auto adjustments and that will make your images darker than otherwise.

    If I understand your comment, you may want to check that box.
    0
  • HansB
    My images (shot with Canon cameras, too) appear in CO just as I shot them, with no Auto-Adjustment(s) applied. But I usually shoot for maximum information. This often results in dark images shot brighter and bright images shot darker, depending on the situation, to avoid clipping blacks and whites.


    NN635542509564695260UL,

    1 or 2 stops is quite a lot. Could you check the setting in 'Color' tool tab, 'BASE CHARACTERISTICS'? It should mention something like '<your camera> Generic' as 'ICC Profile'. Look for the 'Curve'. If the curve is set to 'Linear Response', the image is looking 1 to 2 steps darker. 'Linear Response' is what the sensor captured, without matching it to our eye's vision.


    Regards,
    Hans
    0
  • Michael Sonshine
    [quote="HansB" wrote:

    1 or 2 stops is quite a lot. Could you check the setting in 'Color' tool tab, 'BASE CHARACTERISTICS'? It should mention something like '<your camera> Generic' as 'ICC Profile'. Look for the 'Curve'. If the curve is set to 'Linear Response', the image is looking 1 to 2 steps darker. 'Linear Response' is what the sensor captured, without matching it to our eye's vision.

    Interesting. I did not know that.

    I assume Auto is the default since that is what is set on my system and I have not changed it.
    0
  • HansB
    Hi MikeFromMesa,


    Yes, 'auto' seems to be the default curve setting. If you are interested in curve settings, do you already know this 'Image Professor's Blog' article? It shows the effect of different curves and a bit more. 😊
    http://blog.phaseone.com/take-full-cont ... ilm-curve/
    Not going to become off-topic. 😉


    Regards,
    Hans
    0
  • HansB
    Hi NN635542509564695260UL,


    [quote="NN635542509564695260UL" wrote:
    ... While the first second the image is shown as I shooted, well exposed,, but quickly it appear dark
    I don't launch any preset.


    I forgot to ask this in my 1st post, but I really should start at the beginning. 😄

    It seems that something is applied to your image while loading. Even if you don't launch any preset. Did you already try to load/import one of these images into a fresh session/catalog?


    Regards,
    Hans
    0
  • Michael Sonshine
    [quote="HansB" wrote:

    Yes, 'auto' seems to be the default curve setting. If you are interested in curve settings, do you already know this 'Image Professor's Blog' article? It shows the effect of different curves and a bit more. 😊
    http://blog.phaseone.com/take-full-cont ... ilm-curve/

    Thank you for the link. It was very helpful and I think I will have to pay more attention to the blog links when they arrive in my email.
    0
  • SFA
    [quote="HansB" wrote:
    Hi MikeFromMesa,


    Yes, 'auto' seems to be the default curve setting. If you are interested in curve settings, do you already know this 'Image Professor's Blog' article? It shows the effect of different curves and a bit more. 😊
    http://blog.phaseone.com/take-full-cont ... ilm-curve/
    Not going to become off-topic. 😉


    Regards,
    Hans


    As I recall "Auto" (A setting introduced in V8) will be "Film Standard" all the time currently but may possibly become something more in the future. So basically no change from using the default "Film Standard" that was set previously.


    Grant
    0
  • NN635542509564695260UL
    Correct!
    I built and loaded a custom camera profile; accordingly the curve is set "linear response".
    Surely that is the cause.
    There is no problem.
    Thanks to all
    0
  • SFA
    Ah! Yes, Linear will look darker (or perhaps mostly "flat") if you have not also adjusted for that in YOUR profile somewhere.

    Which of course you could do in a way that would work with you custom profile for the camera.


    Grant
    0

Post is closed for comments.