Hi guys, Long time lurker but new to the forum. I've been doing a lot of reading and I'm struggling to understand what people mean when they say something like iso 100 "1 sec exposure" iso 200 "3 sec exposure". I understand the iso settings, but for the life of me I can't understand how they find out how long the exposure time is? Is this the ev right wheel button? I've usually always shot in auto but I'm trying to shoot in manual to get the most out of my photo's. If anyone could give me an idea of how I work it out, that would be great. Thanks.