• Members 221 posts
    April 16, 2023, 3:47 a.m.

    One vote for curse the darkness then?

  • Members 1737 posts
    April 16, 2023, 3:47 a.m.

    The raw data that I showed wasn't processed into a monochromatic image. The raw data is a monochromatic image. Most raw files are TIFFs. And there is only one plane in the raw image data.

  • Members 3991 posts
    April 16, 2023, 3:48 a.m.

    Nope, just my experience.

  • Members 173 posts
    April 16, 2023, 3:53 a.m.

    Good marketers know exactly what they are talking about. Marketing is about selling stuff, not being 'engineering accurate'.

  • Members 216 posts
    April 16, 2023, 3:53 a.m.

    It is not a surface per say but where I want my white point to fall within the raw file, that white point may not even be in the scene. If that white point does not fall within the FOV I may even select an exposure that is even larger

  • Members 2310 posts
    April 16, 2023, 3:59 a.m.

    wrong. next answer 😁

  • Members 3991 posts
    April 16, 2023, 4:03 a.m.

    I'm sure there are some good marketers who most probably are also ex-engineers but if you took a random sample of say 1000+ marketers from camera and lens manufacturers around the world and asked them what is "exposure", my experience tells me the majority would describe exposure with words to the effect of exposure being how light or dark an image is which is not technically correct.

    If you also asked them to explain the relationship between ISO and noise, again my experience tells me most would describe it with words to the effect that the higher the ISO the more noise will be in the image which again is not technically correct.

  • Members 2310 posts
    April 16, 2023, 4:04 a.m.

    taking the image. this is basic 101 EV setting. not ice i didnt say "exposure" because we are in 2023 😁

  • Members 221 posts
    April 16, 2023, 4:07 a.m.

    Right. TIFF is a file structure which can contain either processed or raw data. A TIFF may also contain JPEG images.

    Any raw image format contains recorded data of a scene which can be processed into a viewable or printable image of the original scene.

  • Members 2310 posts
    April 16, 2023, 4:14 a.m.

    seriously, i failed English at school, my daughter tells me all the time " Dad you are so hopeless at English" 😁 it was the motivating factor for her to become Dux of her schools. and im taking all the credit 😎

  • Members 221 posts
    April 16, 2023, 4:15 a.m.

    Well... that may have provided the information I was seeking.

  • Members 2310 posts
    April 16, 2023, 4:19 a.m.

    if you have the answer post the third letter of the surface

  • Members 3991 posts
    April 16, 2023, 4:20 a.m.

    For maximising the quality of the raw data you need to maximise the exposure* within your DOF and blur constraints without clipping important highlights. In that case ISO is irrelevant for me, as long as important highlights are not clipped because I set the final image lightness in post, not in camera.

    If I am ETTR'ing I lock in base ISO, all other times ISO is set to Auto for the above reason.

    * exposure - amount of light striking the sensor per unit area while the shutter is open
    ** optimal exposure - the maximum exposure* within dof and motion blur requirements without clipping important highlights.
    *** under exposed - more exposure* could have been added with the DOF and blur constraints still being met without clipping important highlights.

  • Members 2310 posts
    April 16, 2023, 4:24 a.m.

    true, but we are looking for the surface thats going to give you a good start. here is the histogram of the surface in direct sunlight. its not 100% but boy its close.
    Screenshot 2023-04-16 133025.jpg

    Screenshot 2023-04-16 133025.jpg

    JPG, 370.7 KB, uploaded by DonaldB on April 16, 2023.

  • Members 216 posts
    April 16, 2023, 4:28 a.m.

    What happens if within the entire FOV there is not an object that is lighter than that surface what could you do then, I would further increase the exposure

  • Members 3991 posts
    April 16, 2023, 4:30 a.m.

    I don't need a surface to give me a good start. I just set the maximum exposure* within my DOF and blur constraints without clipping important highlights. The camera can set ISO where it likes as long as important highlights are not clipped. I then set the final image lightness in post.

    You don't need any surface to do that. It's very straight forward.

    * exposure - amount of light striking the sensor per unit area while the shutter is open
    ** optimal exposure - the maximum exposure* within dof and motion blur requirements without clipping important highlights.
    *** under exposed - more exposure* could have been added with the DOF and blur constraints still being met without clipping important highlights.

  • Members 216 posts
    April 16, 2023, 4:31 a.m.

    Or heaven fore bid that there is an object that could cause clipping in the green channel like some leaves or grass, would you not have to adjust your exposure to eliminate that clipping. You do realize that you can have clipping in non white objects

  • Members 2310 posts
    April 16, 2023, 4:46 a.m.

    i thought grass was good to but its not
    grass.jpg

    grass.jpg

    JPG, 409.1 KB, uploaded by DonaldB on April 16, 2023.