High-Pass & Gaussian – Choosing the radius

[_jason_]

TIP: Connect the High Pass Filter to a Smart Object if you want to use the result for sharpening or bluring. If you map all right together you'll be able to see the result of the tweaking in real time. No need to stick on statically generated high pass images.

[Stecyk]

Thank you very much for sharing this tutorial. I learned a lot about high pass and Gaussian blur. I had not understood their relationship before.

Two quick questions:

1. I notice the action does not clear or delete a layer called "Color Fill 1". Yet, in the tutorial graphic, that layer is missing. I trust we can delete that layer?
2. Toward the end of the action, I see two instances where the action "Delete current channel". I have no idea which channel is being deleted and why. I turned off those two instances and did not see any difference. Can you please elaborate?

I look forward to your assistance.

Best regards,
Kevin

[mistermonday]

Stecyk,
1. Yes, that color fill layer was just used to create a grayscale merged layer that was then duplicated many times. It was not deleted in the action.

2. Delete Current Channel deletes the layer mask which is automatically added to an Adjustment Layer - like the Brightness/Contrast. Whenever you add an adj layer if you examine the Channels Palette you will see that this layer mask is added to the channels palette and that is where the active channel is parked.
If you look at that layer in the layers palette after the deletion you will notice that there is no layer mask on that adj layer because it is not required.

Regards, Murray

[Stecyk]

Thank you for your assistance!

[bakerser]

Originally Posted by _jason_

TIP: Connect the High Pass Filter to a Smart Object if you want to use the result for sharpening or bluring. If you map all right together you'll be able to see the result of the tweaking in real time. No need to stick on statically generated high pass images.

Even better, use Brightness / Contrast in Legacy mode to apply -50 contrast before you run HP -- that way you can avoid the clipping Stroker refers to.