Digital BW, The Print

In working the Windmill image (see my web page below) up to 16 x 20, I found
2 defects in the 8 mp Canon XT/350D image.  First, there was what looked
almost like a double edge at the boundary between the dark tree trunks and
the bright, foggy sky.  I think it was caused by flare and the different
responses of the RGB sensors.  Second, there was visible stair-stepping in
some of the twigs that stick into the sky.  These seem to have resulted
simply from the lack of enough pixels.  I seem to be able to have cured both
problems.

For the edge between the dark tree and bright sky, using a singe color
channel from the shot that was 2 stops under exposed resulted in a very good
edge.

For the stair-stepped twigs, increasing resolution (image pixel size) 250%
in Genuine Fractals took care of them.  It did a significantly better job of
this than did the Photoshop image size algorithm.

Paul
www.PaulRoark.com