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AlanH

Minimum Blur not committing at small values in Photo

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I'm trying to emulate one of my old PSP9 tricks for making fine lines more readable: one of your contributors suggested using Affinity Photo's Maximum and Minimum Blur filters to emulate PSP's Erode and Dilate.

 

Using the split-screen preview, I see a useful degree of black-line dilation at blur levels between 0.5 and 1.9 pixels. However, when I click Apply, the image reverts to its original appearance. Only when I set the blur to greater than 2 pixels will the filter effect commit with the Apply button.

 

Is there something wrong with this - and is this filter really the best way for me to emulate PSP's 'Erode' effect?

 

Thanks,

 

Alan

 

Affinity Photo 1.5.1.54

post-36674-0-05880500-1491486115_thumb.jpg

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Hi AlanH,

You are not seeing the image at 100% zoom. Since the filters are applied dynamically the preview changes slightly depending on the zoom level. If you set the zoom level to 100% you should get an accurate preview of what you will get after hitting the Apply button. If they still don't match then something is wrong.

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Thanks, MEB, but It's not working for me! Did I understand your reference to 100% zoom correctly?

 

In this second example I have made sure view is set to 100%. Again, I can get a useful effect on preview (just wanting to broaden the thin black lines), but it will not apply.

 

I could not attach the screen capture MP4, so it's here: https://youtu.be/3rvplnQO0wc

 

Cheers,

 

Alan

 

[Edited - movie clip re-homed on YouTube]

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