Unsharp Mask problem V 2.1

[Canon10d]

If I create a photo using a number of layers and then add Unsharp Mask as a top layer,

all is as expected with the photo sharpened. If I then "Merge Down" (Shift, Ctrl, Alt) the

photo appears in the top layer again as expected BUT the sharpening has been removed!

Is there a solution?

[walt.farrell]

4 minutes ago, Canon10d said:

BUT the sharpening has been removed!

Are you viewing at a Zoom level of 100% when you evaluate how your sharpening looks, before the Merge? If you're zoomed out (e.g., less than 100%) you don't get a good view of the actual sharpening.

[Canon10d]

I usually sharpen at about 20% to 40%, The sharpening looks as I expect.

I now know that if I "Merge Down" and view as above, the sharpening 

appears to be removed. Following your reply, I looked again and if I

look at the "Merged Down" image at above 50% the sharpening 

is revealed rising to full sharpness at 100%. I still don't understand

why the "Before Unsharp Mask" is OK at 20% while the "Merged Down"

image is not sharpened at 20%.

No matter! I now know that the Final image is as sharp as I wish and 

can be sent on to Nik FX etc.

 

[walt.farrell]

When you are zoomed out, the display optimization techniques ("mipmaps") that Affinity uses for increased performance give you a false view of the actual image. You need to be at 100% zoom to see functions such as sharpness accurately.

[Canon10d]

 Thanks for all the help and advice. 

Problem solved, I'll sharpen at 100% in future,

[walt.farrell]

You're welcome.