How Bigger Pictures
Preserve Little Details
154 PART 3 HOW THE DIGITAL DARKROOM WORKS
Suppose you have just completed an attractive mosaic covering a wall
when the boss comes along and says there has been a change in plans.
The wall is going to be twice as long and twice as high; you’ll have to
make the mosaic four times bigger. There are a few ways you could do
this. You could replace every 1" ×1" tile with tiles of the same color that
are 4" ×4". Or you could spread out the tiles you have and try to figure
out the colors of all the missing tiles that need to fill up the spaces
between the original tiles. Or, you could quit and become a video soft-
ware engineer, which means you’d still face the same problem.
If you zoom in
close on the hub
of the front
wheel, you can
see that the hub
is made up of
more pixels in the
enlargement than
in the original.1