How do I create a radial gradient mask to create a glowing ball effect?

[thomasbricker 30]

I want to create an effect of a radial color burst on top of my existing layers. It needs to be normal blending mode.  and I want it to gradate from intense in the middle to transparent on the edges. How do I do that in affinity photo?

[haakoo 594]

Menu>layer>live filter layer>lighting
Choose the "point" light

[thomasbricker 30]

I’ll give it a try I’ll let you know how I come out. Thanks for the tip.

[thomasbricker 30]

Ok. So I tried it. It’s close to what I’m after but unfortunately the filter effects the rest of the image. Changes the ambient light value. 
i need this to simply be a gradient sphere of color where I can control the roll off of the color on the edges to completely transparent. 

[haakoo 594]

I'm just guessing to what you want so maybe post the picture where you want it to appear

[h_d 173]

Not sure if this is what you want but...

Use the rectangle tool to create a rectangle layer above your image layer, extend the shape to a square whose sides are a little bit larger than the diameter you want your gradient. Place the centre of the square where you want the centre of your gradient to be. Set the fill to radial gradient,  choose a strong colour at the left end of the gradient fill pop-up, set the opacity of the right end to 0. Use the Gradient tool and the sliders in the fill panel to adjust according to taste...

 

 

 

[catlover 201]

The cat looks very proud of himself after having had a go at the settee 

And thanks for the video !

[h_d 173]

She's a she! (And it was her predecessor, sadly no longer with us, who carved up the sofa.)  Kiki is innocent (until proven guilty).

[catlover 201]

To KiKi : My humble apologies !
 

 

[thomasbricker 30]

Hello All,

Just to follow up, I did resolve the technique.

Two great ways to do it, either with a radial fill within a shape which ends with a transparency value of zero, or the same thing with a mask on a layer with a gradient fill.

See attached screenshots.

Thanks h_d for your suggestion.

Problem solved.