• Removed user
    June 16, 2023, 11:07 p.m.

    ISO affects ...

    Weird that this site and others talk about "ISO" as if it were a measurable variable complete with units of measure, placing it on a level with the almighty triumvirate of aperture f/number, scene luminance and integration time (shutter period).

    At the risk of boring y'all, on one of my cameras, ISO does nothing to the raw at all. Nothing. Zip. Nada.

  • Members 608 posts
    June 16, 2023, 11:08 p.m.

    Did anyone suggest otherwise?

    With regards to total light, photons, or, equivalently, lumen seconds (luminous energy). With regards to exposure, photons/area, or, equivalently, lux seconds (luminous energy / area).

    So, now it all makes sense to you, right? 😂😂😂

    Let's take it down a notch -- more light, less noisy photos. But also, more light, greater amount/risk of blown highlights. Also, to get more light, we have to either use a wider aperture, resulting in a more shallow DOF, a longer exposure time, which increases the risk/amount of motion blur, and/or add in artificial light, which changes the lighting of the scene.

    Can't technology and/or software make up for less light? To an extent, yes. I mean, if you're well within the "operating envelope" of a system, then if you're off a stop from the "ideal exposure", it's not going to make that much of a difference. But when you're near the edges of the "operating envelope", being off a stop can be a big deal. So, the more you're near the extremes, the more important this stuff is.

  • Members 3894 posts
    June 16, 2023, 11:20 p.m.

    So you are saying that the word exposure in your thread title means the camera settings?

    In that case your thread title really means:

    Scene luminance has nothing to do with the camera settings

    in which case most people would probably agree, at least to some extent.

  • Members 2303 posts
    June 16, 2023, 11:23 p.m.

    Your answer based on this image 😊

    A7M01794 copy.jpg

    A7M01794 copy.jpg

    JPG, 10.1 MB, uploaded by DonaldB on June 16, 2023.

  • Removed user
    June 16, 2023, 11:28 p.m.

    Your descent into abject rudeness means I win as I circle over the charred remains of your biplane ...

  • Members 2303 posts
    June 16, 2023, 11:32 p.m.

    Yes, which my thread title is probably a little vague now looking at it 😉

  • Members 3894 posts
    June 16, 2023, 11:35 p.m.

    Yes, that is his normal MO when he has backed himself into a corner 🙂

    As shown earlier, he has effectively admitted that his thread title really means

    Scene luminance has nothing to do with the camera settings

  • Removed user
    June 16, 2023, 11:43 p.m.

    ... a classic Straw Man attack, drawing attention away from the subject at hand (whatever that was).

  • Members 3894 posts
    June 16, 2023, 11:43 p.m.

    In the future people will now know what you really mean when you use the word exposure in your posts.

    Mission accomplished 🙂😎

    dprevived.com/media/attachments/27/91/aAr96IpuIEmK63CKAYCYCaqpLs8oOLAs1nVM8qk1s7yLXb5ACDXhT2ugqD3wHvFI/eatingpopcorn2.gif

  • Removed user
    June 16, 2023, 11:46 p.m.

    Mods, please delete or move any post or quote that has the stupid video of some guy eating popcorn ...

  • Members 2303 posts
    June 16, 2023, 11:49 p.m.

    so now we have "exposure value" "an exposure" "exposure settings" so what is the correct photographic meaning for just exposure ?

  • Members 3894 posts
    June 16, 2023, 11:51 p.m.

    Many people like the animated gifs they see in posts when they are aporopriate 🙂

  • Members 2303 posts
    June 16, 2023, 11:53 p.m.

    i agree i like the animated posts.

  • Members 3894 posts
    June 16, 2023, 11:56 p.m.

    Bob explained very clearly the correct photographic meaning for just "exposure" earlier in this very thread 🙂

    He also explained the meaning of "exposure value".

  • Members 608 posts
    June 17, 2023, 12:27 a.m.

    Wear a belt and a little less mousse, maybe? 😆

  • Members 184 posts
    June 17, 2023, 1:14 a.m.

    I determined it using the exposure triangle.

  • Members 3894 posts
    June 17, 2023, 1:25 a.m.

    dprevived.com/media/attachments/26/a0/xU2fDGUAddhTYxkUwUvYVjtvANTwVO9pe6LP0ghXYbO4RdpjbD4sllmlUEsf1HfB/ohno.gif

    😄😄😄😃😃😃😃😃😃😎

  • Members 170 posts
    June 17, 2023, 1:38 a.m.

    No, those are exposure settings in the camera.