Anyone know of a plug-in / filter set that includes a filter for producing concentric circles?
I know one exists as I had one a few years back, but for life of me can’t think of it’s name.
Here’s one trick that works.
Create a layer.
Set default (black + white) colors.
Do a radial gradient. (Doesn’t matter if it’s black or white in the center.) Then use the Magic Wand tool, adjusting the tolerance to select rings of the size you want. Go back to your other layer.
Stroke selection. Voila. A circle.
Use the wand on your gradient layer again to make different sized concentric circles.
Another trick, to make many concentric, evenly spaced rings: Create a new square image. (must be square)
Use the Texture/Patchwork filter. Adjust the tile size to be about what you want the ring spacing to be. (See preview)
Take the Smudge tool. Make a very large brush with 100% hardness, and set the Smudge pressure to 100%
Holding shift, smudge across the image to turn the patchwork into horizontal stripes. It may take several strokes to cover the
entire image, depending on the size of the brush you made. Once you have just stripes, use the Distort/Polar Coordinates filter, using Rectangular to Polar. You may now crop as much of this
image as you want to copy onto your original picture.
