It's not hard to make gradient lighting like this using Photoshop:
But I want to make the lighter part as a point in the center, with gradient along radials.
How to do it?
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Before drawing the gradient with the gradient tool, click any of the gradient modes on top of the screen in the options bar:
The one circled is the one you want for a radial gradient.
In case you don't have the options bar visible, you can activate it in the 'Window' menu by clicking 'Options'.
If you're drawing your gradient using a gradient overlay layer style, you'll want to search out the 'Style' option in the layer style dialog box. Choose 'radial' there for the effect you're looking for!