depth of field

If you want your product image sharp and completly in focus, its best to make sure your depth of field is "big" enough.

This web page does a good job of explaining "Depth of Field" or DoF.

Depth of Field explainer.

This smart phone app "depth of field calculator" is a good choice in our view to determine your depth of field. PAMCO-IMAGING recommends this app.

DoF calculator.