Depth of Field

[Agilulfo]

I'm not sure to understand why you don't rely in the DOF button of your camera.

Another simple solution, I guess you already have tried it, It's work in AV and shot in two f stops (the right one and another with more DOF). It seems faster than consulting charts.

[neuroanatomist]

I'm not sure to understand why you don't rely in the DOF button of your camera.

Depends on the lens and the focusing screen. It you've got a lens that's faster than f/2.8, the standard focus screen doesn't show the true DoF, it shows the DoF of ~f/2.8. That means with an f/1.4 lens, unless you're stopped down beyond f/2.5, your actual DoF is thinner than it appears in the VF, and you can't accurately judge focus.

[HDNitehawk]

I'm not sure to understand why you don't rely in the DOF button of your camera.

Another simple solution, I guess you already have tried it, It's work in AV and shot in two f stops (the right one and another with more DOF). It seems faster than consulting charts.

That is one of those neat little gizmo and gadgets a manufacture includes to increase sales, they are great in theory but in realty just doesn't work very well. I find it to be about useless.