Pre Desktop


To help understand the process of creating halftone dots we could look at the traditional method using prepress cameras (pre desktop computer - these days you will be using scanners). The last era of Camera Operating (a trade qualification) used:
1.High contrast sheet film,
2.A process camera (large floor standing),
3. A Contact Screen.

I have displayed an enlarged portion of a Contact Screen (above). These high precision pieces of film had a cris-cross pattern of varying density in the emulsion. The Contact Screen was vacuumed in perfect contact on unexposed film so that when a given exposure / development time was applied using a special camera, - via light reflecting from the copy, passing through the lens and then the Contact Screen - it (the controlled exposure) created varying dot sizes on the film in response to the amount, or brightness, of light transmitted from areas of the original, once developed ( picture below).




i.e. Enough light from the lighter areas of the original penetrates even the denser areas of the contact screen creating large dots on the final film negative, whereas the small amount of light reflected from the darker areas of the original could only penetrate the contact screen where it was of least density and create only small dots on the film negative.

The third image, (above), displays light from the original passing through the Contact Screen creating the Negative film images, above representative dot sizes as they would print. The Film Negatives mentioned would be used to make printing plates which carried the positive or reverse of the film negatives image.

fr.underwaterphotography.com


  • SELENGKAPNYA............
  • 1 komentar:

    Kami menawarkan jasa desain bangunan rumah modern minimalis interior eksterior secara 100% online di seluruh Indonesia
    Mudah, Cepat, Murah dan Memuaskan, Jasa Arsitek dengan output sebuah paket desain rumah sangat lengkap siap bangun.
    Cukup SMS ke 081916200296, 08979198363, Email ke arusha.st@gmail.com atau BBM, desain yang anda butuhkan sudah sesuai keinginan anda.

    Jasa desain murah
    www.jasa-gambar-desain.blogspot.com
    www.jasa-desain-gambar-murah.blogspot.com
    www.autocad-solidworks-unigraphics.blogspot.com
    www.jasa-interior-eksterior3d.blogspot.com
    www.jasa-eksterior-interior.blogspot.com


    Bagi anda yang ingin memperdalam ilmu desain silahkan kunjungin blog kita yang gratis, simple dan cepat.

    belajar autocad
    www.autocadline.blogspot.com
    belajar solidworks
    www.solidworksurface.blogspot.com
    belajar desain
    www.spotcolordesign.blogspot.com
    belajar illustrator
    www.illustratorgradient.blogspot.com
    belajar photoshop
    www.photoshoptonality.blogspot.com

    Belajar 2D 3D tutorial
    www.all-design-tutorial.blogspot.com

    solidworks tutorial
    www.solidworkengineering.blogspot.com
    www.solidworkforever.blogspot.com
    www.solidworkmydesign.blogspot.com
    www.solidworkbloggers.blogspot.com

    unigraphics tutorial
    www.unigraphicsmydesign.blogspot.com
    www.unigraphicsforever.blogspot.com
    www.unigraphicsengineering.blogspot.com
    www.unigraphicsbloggers.blogspot.com

    autocad tutorial
    www.autocadforever.blogspot.com
    www.autocadengineering.blogspot.com
    www.autocadbloggers.blogspot.com

    illustrator tutorial
    www.illustratorforever.blogspot.com
    www.graphicsdesignsimple.blogspot.com
    www.imeulia1.blogspot.com
    www.illustratorbloggers.blogspot.com
    www.photoshopbloggers.blogspot.com

    Product design
    www.product-engineering-design.blogspot.com
    www.imeulia.blogspot.com
    www.engineeringdesignart.blogspot.com
    www.mechanicalengineeringart.blogspot.com
    www.stainless-steels-volume1.blogspot.com
    www.alumunium-alloys.blogspot.com
    www.computerengineeringdesign.blogspot.com
    www.plasticmanufacturers.blogspot.com
    www.injectionmoldingdesign.blogspot.com
    www.blowmoldingdesign.blogspot.com
    www.producthesis.blogspot.com
    www.arsyananda-desain.blogspot.com
    www.imeulia2.blogspot.com
    www.automotivematic.blogspot.com

    Untuk yang ingin belajar lebih lengkap, step by step dan lebih detail kunjungi :

    www.autocadsimpletutorial.blogspot.com
    www.solidworksimpletutorial.blogspot.com
    www.unigraphicsimpletutorial.blogspot.com
    www.illustratorsimpletutorial.blogspot.com
    www.photoshopsimpletutorial.blogspot.com


    Tags:
    jasa desain rumah, jasa desain interior, gambar desain rumah, jasa desain rumah online, jasa desain rumah minimalis, harga jasa desain rumah, jasa desain rumah kost, contoh desain rumah, jasa bangun rumah

    Post a Comment

     
     
     

    Total Pageviews