kimi's Kreative Homework #58

[kimi_boo]

Hi everyone

As always this assignment is open to EVERYONE who is reading the forum.
Our lesson never end so if you find this late, please feel free to add your image.

Remember.... if you see an image that you like, please leave a comment for your fellow students.
Everyone likes a pat on the back.

We had so many participate last week, I need to take a moment and say Thank You!
There is no right or wrong process here. The point of the creative homework is... to be Kreative!!
Just Jump in and Have Fun!!

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This week we will work with the highpass sharpening technique.
My 2 cents here...
The tut recommends using overlay as your blend mode, I tend to use softlight so give them both a try. I use this all of the time. Even working my portraits I will make a selection around the face, feather at around 125, use Ctrl J to put my selection on it's own layer then run the highpass filter at around 6.5. I always use softlight and most of the time I reduce the opacity a little.
Let us know if you used selective sharpening or if you sharpened your entire image.
Have Fun!!!!

Highpass Sharpening

EDIT: Let me add you want the sharpening to add to your image. It should not show.
Be very careful not to over sharpen!!

[MichelB]

IMG_0359_edited-1.jpg (202.98 KiB) Viewed 361 times

Selective area: In the highpass layer = elliptical marquee tool over face, feather 150, inverse selection (shift ctrl I), invert (Ctrl I) to get 'unsharpening effect' identical to gaussian blur outside the selection.

[kimi_boo]

Very Nice Michel!! Thanks for the explanation.

[chas3stix]

The high pass sharpening is quite subtle. I used overlay rather than soft light.

DSCN1036-copy.jpg (28.9 KiB) Viewed 344 times

Chas

[kimi_boo]

Chas... since highpass works on the edges, maybe try a different image or try a selection on the center of the flower and run the filter again. It looks a little dull like it needs a good levels adjustment.

hope you are ok with the feedback?

[squirrelflight]

Now Michel.. That is truly one those things that once you said I simply could not believe I hadn't thought of that!

So I did the same thing but without feathering for this image. (btw I did my cut with the pen tool so tht is coming along very nicely)

[kimi_boo]

very nice Michelle.

I use the same technique as Michel on lots of things...
blurring, changed to multiply to darken, even working a vignette.

[MichelB]

A few things to know to take full advantage of the high pass sharpening:
- If you invert the high pass mask, you blur instead of sharpen. The result is mathematically the same as a gaussian blur. The only advantage is that you can use a single layer to do both by inverting a selection.
- You can add a mask to restrict the effect of sharpening, which may be useful to avoid haloes around some edges or noise in a blue sky. Without a mask, you can simply paint with 50% grey on the edges or in the sky in the highpass layer. You can even paint in darken or lighten mode to mask the lightening or darkening effect on edges.
- Just like unsharp mask sharpening, using a high radius enhances the local contrast.
- You can use two or more high pass sharpening layers with different radiuses and different masks
- Overlay mode is about twice as strong as soft light: 50% opacity is equivalent to soft light, or two softlight layers equal an overlay one...
- High radius with highpass (or USM) gives depth to the image, but don't overdo it: it is best to restrict the effect to the main part of the subject to make it stand out. It can yield artificial effects with modern architecture with flat surfaces, like glass.

[tennie]

I do like the effects that Michel & Michelle achieved.

I have used high pass for a long while starting with the Panos action (which uses a default of 3.0 and hard light blend). Now I vary between the high pass and unsharp mask depending on the picture.

For the assignment I used the high pass on 2 very different photos. On the bird I used 3.0 and soft blend and dropped the opacity to 60%. For the flower I went to 6.0 also soft blend (seldom use any other blend).

anhinga male.jpg (206.15 KiB) Viewed 308 times

magnolia.jpg (167.19 KiB) Viewed 308 times

[chas3stix]

Kimi,
The "dulling-down" was intentional. The original with a levels adj.layer looked blown out. There was no texture to the rose petals. I'll try the effect on another photo.
Chas