A stupid Photoshop question

[SulferDragon]

Well, this may be stupid, but I haven't been able to figure it out after months, and no guides have helped me. It's actually rather simple, but I was wondering how to get a certain effect in Shop. It's common when I download simfiles, there are horizantal lines across the image.

Examples below:
http://i129.photobucket.com/albums/p237/Sulfer_Dragon/TheFierceBattle-bg.png
http://i129.photobucket.com/albums/p237/Sulfer_Dragon/apieceofcourage-bg.png
http://i129.photobucket.com/albums/p237/Sulfer_Dragon/felys-bg.png

Please tell me HOW I get those effects. I CAN'T FIGURE IT OUT!!!

Thanks, say google and be terminated :)

[DigitalS3r4ph]

It's easy, just use a scanline pattern and set it to overlay or darken 4%-16% depending on the bg.

Here, I'll get you started.
http://img67.imageshack.us/img67/9176/aaascanlineskd0.jpg
It's at 640x480 resolution, which is standard for backgrounds in stepmania.

[PsYcHoZeRoSk8eR]

Interesting, I don't think that I would ever have thought to do that. Then again, I have no expierence in this stuff...

[SulferDragon]

It's easy, just use a scanline pattern and set it to overlay or darken 4%-16% depending on the bg.

Here, I'll get you started.
http://img67.imageshack.us/img67/9176/aaascanlineskd0.jpg
It's at 640x480 resolution, which is standard for backgrounds in stepmania.lol, that's it... Well, what's the easiest way to make a scanline pattern like that?

And thanks for that, now I can start experimenting.

[meiloyn]

Make two long vertical lines across the canvas. One white, one black. And then copy and paste, and merge everything.

[Shadowstar7]

Here:

http://www.imageox.com/image/38899-hscanline.gif

Convert that into a Photoshop pattern, then Pattern Fill your canvas on a new Layer. Set the Mode to Overlay/Softlight at a low Opacity.