No announcement yet.

alpha transparency

  • Filter
  • Time
  • Show
Clear All
new posts

  • alpha transparency

    Perhaps a dumb question, but I can't find the answer...

    psd and png format permit alpha transparency, that is, "partial" transparency. How does one create a partially transparent pixel in PE(2), and how does one alter the degree of tranparency? Lightness/darkness alters colored pixels, it seems, in a fashion parallel to what one would want with transparency, but I don't see how to use this concept (if it is accurate) in practice.

  • #2
    Among other things - painting on a transparent background with a brush at less than 100% opacity (or round the edges of a soft brush), setting a layer to less than 100% opacity...


    • #3
      Here's a demo:

      1. open a new image with a white background.

      2. create a new layer.

      3. fill the new layer with black.

      4. reduce the opacity of the black layer to 50%.

      The result will be gray, or a 50% mixture of the two layers. This is essentially what happens with transparency. Transparency can be affected with Opacity, and masking in the image, or as a transparency property for the image (which may be what you were talking about having to do with a PNG). I have a tutorial on transparency on my website:

      This website is for sale! is your first and best source for all of the information you’re looking for. From general topics to more of what you would expect to find here, has it all. We hope you find what you are searching for!

      choose the transparency tutorial. In there somewhere is a demonstration where I use a transparent GIF to act like a shadow passing over a background. In that image, half the pixels in the shadow area are set to black and the other half to white -- and white is assigned as the transparent color. the alternating black and transparent pixels allow the shadow 'sprite' to pass over the background letting you half see through, and half darken the result. One of many uses.



      • #4
        Thank you both. Thanks particularly to Richard for the detailed explanation/demo.


        Related Topics


        • Legacy~Art
          Alcar can you...
          by Legacy~Art
          Alcar could you possibly do us a tutorial on how to make the pencil drawing please? I tried your instructions of...

          Open layer above background and fill with white. Reduce opacity until image is visible. Add reveal all mask and paint with black (5-10% opacity) soft brush. Keep increasing...
          10-24-2005, 04:35 PM
        • fotogen
          Adding Floor to an image
          by fotogen
          I posted a thread on "skin texture" and leaned SOOO much from all the contributor. Amazing experience. Thank you all
          How would I create a separation between the floor and the background wall when photographing a model against white background? When using seamless paper, the lights...
          01-17-2010, 12:34 PM
        • Jeff East
          Making realistic shadows for product shots
          by Jeff East
          Hey gang, I have begun taking jobs, and one of the first is a series of slides from a local furniture maker. His existing images are of contemporary woodcrafted furniture shot on an all white background. The only way to see the "floor" is by way of the cast shadow made by the studio lights....
          09-30-2002, 06:49 AM
        • Trimoon
          Tutorial: Trimoon, How I do my digital art
          by Trimoon
          I’ve been struggling for several days to put together a tutorial on how to do my digital art. I’m like a lot of you who like to sit down and try different things. That is kind of what I’ve always done. I’ve been working with Photoshop for many years now – ever since version 3 came out. I know...
          09-06-2002, 04:41 PM
        • DBTabe
          How to make this Transparent and Put on Dark Background
          by DBTabe
          Hello all!

          I have been driving myself crazy trying to make the attached .gif transparent and placed onto a dark background. I am using Paint Shop Pro 6. No matter what I do, the edges are all jagged and white.

          Does anyone have any suggestions as to what I can do to make...
          08-21-2006, 03:00 AM