Attila, Jostein and Bruce, 
Delayed thank you for your responses to this question.

Atilla: I didn't mean the functionality, but the visual outcome.

Jostein: I haven't tried, but from what I expect from your procedure, 
I am not sure it does that effect, but I will try.

I think Bruce's scenario may accomplish what I am trying to do.
Now I just need time to try it.

Actually, I've done something of this sort before:
http://42graphy.komkon.org/swing/ch-2008/1-selected/IMGP4530_1.html
I don't remember how I did, - it was more than 5 years ago.
IIRC, I used some filter for the edge detection in that one.


Igor




Sun Jan 5 11:38:39 EST 2014
Bruce Walker wrote:

Igor, you could achieve that in Lr by cheating: do a screen grab. :-)

Here's a way in Ps:

- convert shot to b&w (I used a B&W adjustment layer and stamped it to
a new layer with Shift-Option-Cmd-E)

- Filter -> Other -> High Pass and set the radius appropriately for
your subject and image size (try 5 pixels)

- add a Levels adjustment layer, set the Shadow Input Level to 128 and
slide the Highlight Input Level down until you get the effect you
want. Worked at about 139 for me.

Have fun!


On Sun, Jan 5, 2014 at 12:48 AM, Igor Roshchin <str at komkon.org>
wrote:
>
> In LR, when you hold Alt and move the "sharpen radius" slider,
> LR shows essentially the edge of the objects.
>
> Is it possible achieve that effect in the actual image in LR?
> If not, - what would be the easiest way to reproduce that in
> Photoshop?
> (I've done something along the way last time a couple of years ago,
> but it would take me some time to recall that. But even in that case
> it
> was not quite the same as for what one sees in LR)
>
> Thank you in advance,
>
> Igor
>
>
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