Threshold in various adjustments

[jeffers]

Ok so I can play around moving the "threshold" slider in various filters etc but just what does "threshold" mean?

Apart from searching the help files is there a reference document somewhere where some of these terms like "radius" ,"factor" and so on are explained?

[Lee_T]

A Threshold can be thought of as a limit for a setting to take effect, for example the bloom setting on the lens blur filter when set to 100%, none of the image is considered for adding the amount of bloom you have set. If you drop the threshold 10% only the top 10% brightest areas in the image is considered for adding bloom, at 0% threshold all of the image is considered for adding bloom.

The help files below will aid you in knowing how to use tools; but for general mathematical terms like radius and factor, I would advise Google/YouTube as better resources.

https://affinity.help/

Lee

[Alfred]

There are many online resources that explain these things with reference to Adobe Photoshop, but here’s a page specifically about the Unsharp Mask filter in Affinity Photo:

https://lenscraft.co.uk/photo-editing-tutorials/affinity-photo-unsharp-mask-filter/

[jeffers]

Ah....well that helps a bit....and yes I use the help files frequently as lots of info there. So onwards with Google is your friend....I suppose🙂

[walt.farrell]

37 minutes ago, jeffers said:

Apart from searching the help files is there a reference document

The Help is the official reference document. And as far as I know, each setting for each filter is explained on the page for that filter.