Questions about how to achieve transparency, or adjust the level of opacity, in any graphic manipulation software.

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3
votes
3answers
3k views

Formula for finding out the result of a color after applying x% opacity to it?

I have 2 colors #a1a2a4 black (#000000) white (#ffffff) Now I need to know how much opacity (in a percent) must I apply to the second color (black) against a background of the third color (white) ...
14
votes
5answers
31k views

Copy & Pasting from Photoshop to Illustrator loses transparency

I often run into this issue. I'm creating a file in Photoshop with masked layers etc. I want to make the final output available for some mock-ups in Illustrator, so I rasterize the layers and marquee ...
12
votes
4answers
42k views

Photoshop CS5: Setting a black background to transparent

I have an image of smoke over a black background. If I set the blending mode of this layer to screen, the image's background is perfectly edited out, however if there isn't another layer below this, ...
13
votes
8answers
4k views

Transparency to unpremultiplied RGB + Alpha

I have a transparent layer in Photoshop CS5 (so internally, it's most probably stored as unpremultiplied RGB component plus an alpha component per pixel). Now I want to transform this to an opaque ...
9
votes
4answers
12k views

How does one turn a white background transparent in Photoshop but keep transparency?

In this image, I want to keep the drop shadow, but not the white background.