• Members 2288 posts
    May 29, 2023, 9:07 a.m.

    perfect greys as i said i calibrate my monitors from grey patches. and the numbers.

  • Members 2288 posts
    May 29, 2023, 9:11 a.m.

    all good. does Bobs B&W image of the dog look perfect greys ?

  • Members 3347 posts
    May 29, 2023, 9:19 a.m.

    But after Bob said:

    and that for all the pixels R=G=B, do you really believe anyone would expect you to say anything but that they are perfect greys on your monitor? 😎

    Now whether with your track record of at best bending the truth when not completely making things up, I at least will never know if they are perfect greys on your monitor or not 🙂

    But even if they are, if you understand the concept behind profiling a monitor (as opposed to calibrating it) you would know that just because the greys display correctly does not mean in any way that all colours will as well 😎

  • Members 2288 posts
    May 29, 2023, 9:23 a.m.

    you arnt really that smart hey 🥱
    this is a photo of my laptop monitor.
    A7M01617.JPG

    A7M01617.JPG

    JPG, 24.0 MB, uploaded by DonaldB on May 29, 2023.

  • Members 3347 posts
    May 29, 2023, 9:28 a.m.

    Maybe it is, maybe it isn't. Maybe it another prefabricated image to suit whatever agenda you are pushing at the time.

    But even if in Bob's version they are perfect greys on your screen, if you understand the concept behind profiling a monitor (as opposed to calibrating it) you would know that just because the greys display correctly does not mean in any way that all colours will as well 😎 as shown in the different rendition on your screen of the dog image I posted 🙂

  • Members 2288 posts
    May 29, 2023, 9:36 a.m.

    it also shows how accurate auto WB is on my camera. and my rear lcd as well as my evf all corrected.

  • Members 3347 posts
    May 29, 2023, 9:40 a.m.

    So what? The Auto WB is very accurate on most modern digital cameras when photographing a scene in good light with a simple single light source.

    You have yet to post a "test image" in low light to compare sooc jpegs with raw processing and that is because you know that especially in low light shooting raw enables better quality final images from raw processing, after optimising exposure* for raw, compared to sooc jpegs.

    All your "test images" are of scenes in good light proving my point #2 earlier.

    dprevived.com/t/why-dont-cameras-have-raw-histograms/3523/7/#post-42133

    "I have also posted on numerous occasions that with today's modern cameras and with a large enough supply of bananas you can train a monkey to take a nice looking sooc jpeg in good light. The raw file you posted was of a scene in good light."

    Point #5 described a better test image but you have never posted one because it will clearly show the benefits of raw over sooc jpeg.

    * exposure - amount of light that struck the sensor per unit area while the shutter was open
    ** optimal exposure - the maximum exposure* within dof and motion blur requirements without clipping important highlights.

  • Members 976 posts
    May 29, 2023, 1:06 p.m.

    Do you see the numbers? Do you understand the numbers? What in the numbers tells you "too yellow"?

  • Members 976 posts
    May 29, 2023, 1:18 p.m.

    Gives false comfort.
    A lot of what you are saying is about it, false comfort.

  • Members 976 posts
    May 29, 2023, 2:31 p.m.

    Metadata contains a record indicating manual adjustment of white balance is dialed in:
    [MakerNotes] 0x2026 WBShiftAB_GM_Precise: -0.50 -0.50
    Sony IEDT confirms this adjustment is active.
    Numbers in IEDT confirm that whites have cyanish tint.
    Numbers from the TIFF rendered through Sony IEDT as-is, with only the camera settings applied, also confirm cyanish tint on whites:
    Screenshot from 2023-05-29 10-30-28.png

    Screenshot from 2023-05-29 10-30-28.png

    PNG, 1.3 MB, uploaded by IliahBorg on May 29, 2023.

  • Removed user
    May 29, 2023, 3 p.m.

    White Fur by-more-numbers:

    by the numbers.jpg

    Looks white-ish on my monitor ...

    Raw:

    A7M01564-Sel-2188-2297-43x46.png

    Lower red channel in my histogram confirms your by-the-numbers cyanish tint!

    A7M01564-Sel-2188-2297-43x46.png

    PNG, 40.5 KB, uploaded by xpatUSA on May 29, 2023.

    by the numbers.jpg

    JPG, 320.2 KB, uploaded by xpatUSA on May 29, 2023.

  • Members 1737 posts
    May 29, 2023, 3:59 p.m.

    I have not found that to be the case at all. What's "very accurate"? Within 2 Delta Cab?

  • Removed user
    May 29, 2023, 4:46 p.m.

    Nor have I.

    Too, I'm wondering what constitutes "good light" and what a "simple single light source" is. Perhaps Danno will enlighten us without obfuscation ...

    ... and perhaps not. 😐

  • Removed user
    May 29, 2023, 4:59 p.m.

    Come on, don't be a wimp ... tell it like it is ...

  • Members 49 posts
    May 29, 2023, 7 p.m.

    I'm not familiar with the windows calibration tool, but if it doesn't use an external measuring instrument like the Spyder or other similar alternatives (and I'm betting it doesn't) then the results will always be subjective and impossible to map to anyone else's configuration---and therefore useless for maintaining an accurate color management chain.

    I have no idea whether the colors I see in your image are even similar to what you see. I can be pretty confident that the colors I see in an image Danno posts are in fact the same as what he sees, since we both use externally calibrated monitors and the color profile in the image describes how to display it correctly, and if it can't be displayed correctly (out of gamut elements, for example, though I'm going to guess we both have wide gamut monitors) then we can be warned about that. For a guy who's all about the numbers I'm surprised you don't see that.

  • Members 1737 posts
    May 29, 2023, 7:51 p.m.

    I don't like external calibration as well as the internal calibration that my Eizo monitor has. It calibrates the monitor when the system is idle and I don't have to remember to manually do calibration.

  • Members 49 posts
    May 29, 2023, 7:57 p.m.

    How does it work? More specifically, how can it tell that its results are accurate if it's not measuring what the monitor actually emits? (Or is it?)

  • Members 1737 posts
    May 29, 2023, 8:20 p.m.

    It is measuring what the monitor emits. At night, when no one is using the system, a spectrophotometer swings down from the top bezel and the monitor runs its internal calibration program. The OS doesn't know that it's happening.