if its in the editor you mean hold ctrl and scroll out. it'll make the black part go further away. its there to stop the lag when mapping.
trigger
event - time periodic 0.01 seconds
action - unit group pick all players....
camera - set picked players distance to target to 2000 over 0 seconds
best trigger ever ^^
lol
Aside from the fact it runs 100 times a second.... Wouldn't you want to use camera height instead of distance to target? Not exactly sure how they differ...
Dont you think 100 times per second will lag a bit? XD