Digital Photography Hacks [Electronic resources] نسخه متنی

Hack 73 Fix Flash Falloff

Built-in flashes on digital point and shoots
sure are handythat is, up to about eight feet.
Here's how to brighten those dark areas when your
flash runs out of juice before your subject does.

During the holidays and other social events, the setting is usually
larger than our little flashes can cover. So, the people in the front
of the scene get overexposed and the folks in the back fade to black.
Thanks to a nifty tool in Photoshop called an overlay
mask, you can correct this uneven treatment of
your guests.

You can use Photoshop Elements or CS for this hack. I'll work in Elements this time around, just to show how powerful this entry-level image editor really is.

After opening your picture, open the Layers floating palette, found
in the Window drop-down menu. Select LayerNew Layer. Choose
Overlay from the Mode pop-up menu and set the opacity to 50%, as
shown in Figure 6-23.

Figure 6-23. Adding an Overlay layer

Check your Tools palette to ensure that your foreground color is
white and the background black. Then, click on the
Gradient tool, as shown in Figure 6-24.

Figure 6-24. Choose the Gradient tool from the Tools palette

Use your Gradient tool to draw a black-and-white linear (rather than,
say, radial) gradient straight up the image, from the brighter guys
to the darker ones. Try to follow the flash falloff itself. You can
begin your gradient off the image or in the middle of the image,
wherever it works best. You can also redraw it until
it's just right. It's just right
when you have a dark mask over the bright area, fading evenly to
white over the dark area. The image now looks much more evenly
illuminated.

Click on the Background label in the Layers palette to highlight the
background layer. Then, open the Levels dialog box
(EnhanceAdjust Brightness/ContrastLevels). Move
the middle triangle to the left until the overall brightness of the
scene is pleasing to the eye, as shown in Figure 6-25.

Figure 6-25. The final adjustment, using the Levels dialog box

What an amazing difference between Figure 6-23 and
Figure 6-25! It's like having a
powerful flash that can light up the entire room.

Save the image as a Photoshop file
(.psd). This will preserve the layers so that
you can go back and readjust in the future if you wish. Then, select
Save As and choose JPEG for the format. This will flatten the file
(eliminate the layers) and reduce its size so that you can share it
with friends and family more easilyespecially those who were
in the back of the picture and are now cast in a new light, thanks to
your Photoshop prowess.

Mike Pasini