Originally posted by TylerD I has another go with the Digital Preview this time and could see no difference atall so I think I'm going to give it up as a bad job.
That's exactly what I've concluded.
Quote: I'm interested though how you all judge dof when you don't have dof scales on your lenses and how do you know what focal distance to use to get a particular dof -is it just experience/seat of the pants / use of dof tables?
Yes. Yes, experience and experimentation and using tables. Hmmm, I just got an Android tablet, I'd better look for some DOF etc apps. And then use them! EDIT: I just searched the Apps market. ZILLIONS of DOF calculators! Most of them free! Which to get? Decisions, decisions...
Quote: Sorry if this is all a bit confused but I'm at the stage where I don't know enough to know which questions to ask and it sometimes feels a bit like wading through treacle!
Slogging through thick sh!t is more like it. Digicams offer many advantages over film. DOF preview on an SLR isn't one of them. Still, try LiveView for previewing -- you may get a better taste of DOF there. Good luck!