Quote (Antichrist- @ Mar 8 2010 04:25am)
but with dslr you can just choose other place to meter from to get accurate readings since you see if pic is under or over exposured and with film you dont know if the exposure will be right unless you know how the metering works and if you do you can just read it from the right place. imo this rule if useful only when you shoot non metering camera and dont have a external light meter
Well just read post #7 and some of the other posts in this thread and my may will change your mind
http://photography-on-the.net/forum/showthread.php?t=258905I am still a newbie here so I haven't really applied this rule when shooting but I do have noticed inaccurate exposures in some circumstances.
Here is a tutorial on how to make simple and inexpensive light tents

I have always wondered how they get those nice product shots and found my answer when I saw this tutorial
http://digital-photography-school.com/how-to-make-a-inexpensive-light-tent