I was expecting an URL where the great megapixels quotation is.
The sharpening with highpass filter technique certainly does work, but
has been made mostly obsolete by PS Sharpen and Smart Sharpen filters.
The idea is that when you sharpen you want to slightly increase the
slope of rapid contrast changes. The high-pass filter has the effect of
producing bright and dark pixels *only* where there are strong contrast
changes (ie dark area transitioning to bright area or the reverse). So
if you clone an image onto a new layer, then run a high-pass filter with
a width of a few pixels (eg 4) over that you'll see a mostly gray image
with dark and light outlines near detail edges in your image.
If you then set the layer blending mode of your highpass layer to
Overlay (in Photoshop parlance) you will see a subtly sharpened version
of your image. The pixels that are darker or lighter than 50% in the
highpass layer will amplify the values of the original image layer. You
can increase the effect by increasing the contrast of the highpass layer.
-bmw
On 11-04-20 11:32 AM, Steven Desjardins wrote:
These awesome powers certainly do come from being bitten by the
photography bug. ;-) I have never heard of this method, so i was just
curious if this is a sensible approach.
On Wed, Apr 20, 2011 at 10:15 AM, Bruce Walker<bruce.wal...@gmail.com> wrote:
On 11-04-20 9:13 AM, Steven Desjardins wrote:
I was directed to this site yesterday:
"With great megapixels comes great responsibility."
I couldn't quite get the process to work. I think when I initially
select all I only have one layer so I can't do exactly what they say.
also, I just end up with the high pass results and no overall picture.
Does anyone use this approach?
"From adequate cut'n'paste comes some responsibility."
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