• Members 221 posts
    April 9, 2023, 12:08 a.m.

    How you interpret and describe any given set of facts likely matters more to you than to others. Others will naturally favor their own point of view on any given matter. The art is in persuading others to your viewpoint, because demanding it usually doesn't work well.

  • Members 1737 posts
    April 9, 2023, 12:10 a.m.

    In the case of Bruce, that's not possible any more.

  • Members 976 posts
    April 9, 2023, 12:12 a.m.

    Given you are persuaded that exposure triangles are dangerous misinformation, will you edit the link off?

  • Members 221 posts
    April 9, 2023, 1:03 a.m.

    The purpose of a histogram in a raw processing application is to provide data which represents the processed image state. It's very useful in the role it's designed to play in the process of creating images.

    RawDigger is informative in evaluating the unprocessed raw data from a captured scene which is used by your processing application to construct the image you will eventually see — after it's been processed. The latent image data in your raw file is not an image until it's been processed into a viewable form, it's raw scene information waiting to become an image.

    Alternatively, you could run a series of bracketed exposures to determine how the captured scene is represented in the processed image. A series of bracketed and processed test images can be quite useful in evaluating the end results obtained and obtainable from your imaging chain.

  • Members 221 posts
    April 9, 2023, 1:19 a.m.

    Maybe, I'm not in any rush. I'm only generally aware of the site and I'd want to take a closer look at any concerns to see how serious any errors or omissions might be. For now, from what I've seen of the site and other sources of online resources for beginners, I think a beginner could do a lot worse in getting started with basic information online.

    Suggest a better alternative and I'll make an edit to substitute or add the better resource.

  • Members 1737 posts
    April 9, 2023, 1:27 a.m.

    And yet, you are the one who recommended it.

    This, in particular, is toxic:

    "Aperture: controls the area over which light can enter your camera
    Shutter speed: controls the duration of the exposure
    ISO speed: controls the sensitivity of your camera's sensor to a given amount of light

    One can therefore use many combinations of the above three settings to achieve the same exposure."

  • Members 221 posts
    April 9, 2023, 1:39 a.m.

    Sadly so. I was never more than a friendly acquaintance who was privileged to share some time, conversation, and a few meals back in the day. He was knowledgeable, generous of spirit, and now sorely missed. Definitely someone who I respected and appreciated.

    Fortunately, his writings are still available. His books are available online and from many public and university libraries.

  • Members 1737 posts
    April 9, 2023, 1:48 a.m.

    I was a working color scientist when I first met Bruce. I found him likable, a good speaker, and one who went a long way to make color sconce and color engineering approachable by lay people. The ICC owes him a debt of gratitude, whether they know it or not. Bruce was a bit more comfortable with elision than I was.

    And while we're praising color management evangelists, let's not forget Andrew Rodney.

  • Members 221 posts
    April 9, 2023, 1:49 a.m.

    [My quote from above in full] I'm only generally aware of the site and I'd want to take a closer look at any concerns to see how serious any errors or omissions might be. For now, from what I've seen of the site and other sources of online resources for beginners, I think a beginner could do a lot worse in getting started with basic information online.

    Suggest a better alternative and I'll make an edit to substitute or add the better resource.

    We have different views on what it requires to label something as toxic. I've experienced toxic at an online site, but that involved ongoing harassment with attempts at intimidation and bullying thrown in for good measure.

  • Members 1737 posts
    April 9, 2023, 1:51 a.m.

    Do you agree that it's wrong?

  • Members 221 posts
    April 9, 2023, 1:58 a.m.

    In the too little time I was able to spend with Bruce, he always seemed comfortable with who he was and more concerned with informing people than impressing them.

  • Members 1737 posts
    April 9, 2023, 2:02 a.m.

    I don't know why you modified what I said the way you did. But, circling back around to the matter at hand, do you think this statement is wrong?

    "Aperture: controls the area over which light can enter your camera
    Shutter speed: controls the duration of the exposure
    ISO speed: controls the sensitivity of your camera's sensor to a given amount of light

    One can therefore use many combinations of the above three settings to achieve the same exposure."

  • Members 221 posts
    April 9, 2023, 2:03 a.m.

    Online harassment, intimidation, and bullying are always wrong in my view.

  • Members 1737 posts
    April 9, 2023, 2:04 a.m.

    I'm talking about this statement:

    "Aperture: controls the area over which light can enter your camera
    Shutter speed: controls the duration of the exposure
    ISO speed: controls the sensitivity of your camera's sensor to a given amount of light

    One can therefore use many combinations of the above three settings to achieve the same exposure."

  • Members 221 posts
    April 9, 2023, 8:21 a.m.

    I don't find anything dangerous in it at all. It's a very brief and simplified overview to introduce a basic concept to a beginner, not a detailed or deep exploration for a different audience.

  • Members 221 posts
    April 9, 2023, 8:24 a.m.

    In my experience that's been true for the reasons explained in the article. I've only used one raw processing application, for any extended period of time, which offered the option of processing an image with linear gamma (gamma 1.0), an old Kodak DCS software app. The rare times when I applied the linear gamma option, images looked like the one illustrated in Bruce's article — dark and flat. Every other app I've used for daily production work has a default gamma correction automatically applied for reasons which should be clear from the article.

    The quote is a caption for an illustration, there is more detailed explanation in the body of the text. Gamma correction is also discussed and illustrated in the article.

    The need for a tone reproduction curve / gamma correction is covered in the article's text and caption for the next illustration: "The same linear processed capture with a tone curve appears normal."

    I recommend it for anyone wanting a very simple, concise, and well written introduction to the concepts discussed.

  • Members 221 posts
    April 9, 2023, 8:36 a.m.

    I'm persuaded that speaking for others presents an excellent opportunity for miscommunication. I can't say how dangerous that might be, however.

  • April 9, 2023, 8:56 a.m.

    This is what would be (wrongly) labelled as 'semantics'. Instead of discussing the central issue, the discussion has been turned to whether an irrelevant adjective is best chosen. 'Toxic' is maybe overstated, but only because photography is usually not a life or death issue. It would be different if training material for medical doctors contained 'simplifications' which led the doctor to fundamentally misunderstand how the body works, and later on could lead to the use of procedures which would damage the health of patients.