Opacity gradients can be achieved a number of ways. Here’s a simple way. Make sure your colors are set to default black and white.
If your layer is a background layer Alt double click it so that it says Layer 0. At the bottom of the layers pallet, click the layer mask button. Click on the gradient tool and draw the gradient, use the shift key to keep your gradient straight.
Simple as that really…
Peace,
Tony
Seek out the PS plug-in "Filter Factory".
In addition to RGB channels, it provides an "a" channel. The a channel is a transparency channel which allows you to control opacity in steps from 0 (fully transparent) to 255 (fully opaque). With it you can create just about any opacity pattern—linear, radial, and other gradients included.
George
George, this is exactly what layer masks are for and exactly how they work using an alpha channel. It might be a little easier and perhaps a bit more versatile than a plug-in would be. Might be something you’d want to try yourself. 🙂
E. Segen
I must take exception to your suggestion that layer masks "might be…more versatile [than FF]"
If it is ANYTHING, FF is versatility epitomized. And it is accurate. And allows mathematically precise opacity patterns (among other things) to be defined. I read into the context of your comments that you have not ventured to use FF—correct? Try it—you can’t help but like it.
George
To do it without using a mask (which is the far better way), just go into Quickmask mode, apply a gradient, return to standard mode, and hit ‘Delete’.
– John
