Joanna's notes on scaning Digital Photography Lessons Home
Subject: A FEW NOTES FROM THE WORKSHOP LAST NIGHT
When scanning on a flatbed scanner, keep in mind that the default setting
is usually 100%, meaning that if your image is 4" x 6" and you are scanning
an image at 300dpi, the image you end up with is 4" x 6" with a resolution of
300. If you want a larger image, you can either up the resolution OR up the
percent at which you're scanning. For example, if you keep your resolution at 300
dpi and you change the percentage to 200%, you are doubling the size of your
image to 8" x 12". If you change the percentage to 300%, you will have an
image size of 12" x 18" at 300dpi. To print on Epson printers you do not need more
that 240dpi, so you have plenty of latitude for some cropping with that
amount of information in your scan. You can do it the other way by changing the
resolution to say 600 dpi or 1200 dpi but then you have to change the resolution
to increase the size later in your editing program (Photoshop or Elements).
Last night we were working with the whole surface of the scanner, so the
resolution of 300 dpi at 100% was enough to make a large print from the scan. My
personal preference is to scan the image to the size I want it by changing the
percentage at which I scan it.
Using extra lighting from above is kind of the reverse of what we did at
the tabletop workshop where we had light coming from below from a light box
and also from above from the lighting we were using. Adding movement to parts of
the image while scanning gives an additional creative option that I think
could be very rewarding. Also check to see what other settings your own scanner
has to control the quality of your scan. The main thing is to experiment. It
costs you nothing but time and a little electricity. If you don't like the
result, throw it out. It's not like you are spending money to buy and develop film.
THE TWO COMMAND KEYS IN PHOTOSHOP THAT ARE DIFFERENT FOR PCS AND MAC ARE:
"COMMAND" FOR MAC IS "CONTROL" FOR A PC AND "OPTION" FOR A MAC IS "ALT" FOR A
PC.
To go over how I make the white soft border....select the entire image
(Control/Command A). Go to your "Paths" dialogue box. Press and drag little
arrow in top right corner to "Make work Path". Select the size brush you wish to
use and make sure it is a soft brush, make sure the mode is "Normal" and the
Opacity is 100% and make sure the FOREGROUND color at the bottom of your tool
box is white. Go back to Paths and press little arrow in upper right and drag to
"Stroke Path". You can also do this on a new layer and then you can turn it
on and off to see if you like it better with or without the border. You can
also add other layers with other color borders and turn them on and off to see
which you like better.
To get the dreamy look that I like to use for flowers and things, get your
image cropped,rotated, color adjusted etc. Make new snapshot (History
Palette, little arrow upper right, click and drag to New Snapshot). Make backround
copy (Layer Palette, click on backround layer and drag to icon that looks like a
piece of paper on the bottom of the layer palette). Use Gaussian blur
filter. Cut back opacity of layer to where you like it. Copy this layer the same way
you did the previous layer. Change the MODE to Overlay. Adjust the
percentages of each layer until you like the effect. Flatten image. Click the small box
to the left of your New Snapshot to select the source of your history brush.
Select your history brush in the tool box, lower opacity of brush to 20% or 30%
and paint back in some of the sharpness of the original image where you want
it. Go over those areas as many times as you want to gain the sharpness you
want. If you don't have a history brush in Elements you can still do this by
making another copy of the BACKROUND layer and placing that layer on TOP of the
other three layers. Click on the original backround layer and link (click
little box to left of layer) the next two layers but NOT the top backround copy
layer. Go to little arrow upper right drag to Merge Linked. That will leave you
with two layers, with the top layer the original sharp layer. Make layer mask
(Layer> make layer mask>hide all). You now have a black layer mask which is
hiding your sharp layer. To add sharpness to certain areas, go to brush tool,
make opacity about 20% or 30%, make foreground color white and paint on image in
those areas where you want the sharpness. Increase opacity of brush or go over
areas several times to get more sharness. What you are actually doing is
painting on your mask with white to reveal the hidden (sharp) layer.