Hi all, I have a polaroid 600se I am wanting to purchase a light meter so I don't waste film on under/over exposed newbie shots. I am looking at the senika L-308s given the price. Do these things actually tell which aperture setting to use? Apeture settings on the 600se and medium - full format camera aren't a direct comparison to say digital SLR's, so would a light meter give me a correct setting for 600se format? Or am I just way off the mark in what I am saying? Thanks for any help / advice.