Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 69,963   Posts: 1,523,262   Online: 1001
      
Page 2 of 2 FirstFirst 12
Results 11 to 13 of 13
  1. #11
    Photo Engineer's Avatar
    Join Date
    Apr 2005
    Location
    Rochester, NY
    Shooter
    Multi Format
    Posts
    22,931
    Images
    65
    Quote Originally Posted by Ektagraphic View Post
    Would it be possible for film to have square grains? (AFAIK, it does not, but I could be looking like an idiot right now). If so, would remotely look like it has p-x-l-s rather than traditional grain?

    Patrick
    Silver halide crystals are stacked in film in 3 dimensions and are themselves 3 dimensional objects. Pixels are not stacked in 3 dimensions but instead are manufactured in a 2 dimensional array on a substrate. Thus a pixel is square but one of the emulsions in Ektar 100 is a cube, and each cube is far smaller than a pixel and each cube in the film are stacked top to bottom and left to right in a random patter of billions of cubes. In fact, for every 108 mg of silver in film, there are 6.023 x 10^20 atoms of silver. There are about 300 mg of silver in ever square foot of film.

    Silver halide crystals come in virtually every geometric shape including cubes, octahedra, pyramids, and etc. The pAg at the time of manufacture governs the form. I describe this in my book.

    The developed silver can be in the form of filaments, tablets, and a variety of other shapes depending on the developer. This is shown in Haist for example, with photomicrographs.

    So in a way, yeah, films have squares! Only they are better, they are cubes.

    PE

  2. #12
    KenS's Avatar
    Join Date
    Jan 2005
    Shooter
    Multi Format
    Posts
    348
    Quote Originally Posted by Gerald C Koch View Post
    One of the unfortunate things about Nature is that she gives us what she wants and not what we desire. Some years ago there was a serious attempt to breed chickens who would lay square (actually cubical) eggs. Such an egg would be ideal for shipping. Ma Nature didn't like the idea and neither did the chickens.
    Actually.... there are two other reasons

    First.... The shell would not be as 'strong'

    Second... The hen's cloaca would close with either a 'bang' or a 'clap'....

    Can you imagine the noise living close by a commercial 'egg factory'. The 'farmer' would not be able to take any afternoon naps.

    8-)

    Ken
    Quando omni flunkus moritati (R. Green)

  3. #13
    lxdude's Avatar
    Join Date
    Apr 2009
    Location
    Redlands, So. Calif.
    Shooter
    Multi Format
    Posts
    6,586
    Quote Originally Posted by Gerald C Koch View Post
    One of the unfortunate things about Nature is that she gives us what she wants and not what we desire. Some years ago there was a serious attempt to breed chickens who would lay square (actually cubical) eggs. Such an egg would be ideal for shipping. Ma Nature didn't like the idea and neither did the chickens.
    They went about it wrong. First they have to come up with a square chicken; the eggs will follow.
    I do use a digital device in my photographic pursuits when necessary.
    When someone rags on me for using film, I use a middle digit, upraised.

Page 2 of 2 FirstFirst 12


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin