Playing around with depth of field and I think I finally get it?

Started 3 months ago | Discussions thread
OP LillyRoseAvalos Forum Member • Posts: 67
Re: Playing around with depth of field and I think I finally get it?

So according to the calculator I found at a subject distance of 10 centimeters at f9 on a 1.6 crop sensor the total depth of field is 0.46 centimeters. Which is 4.6 millimeters. Shooting at F2 at a subject distance of 20 centimeters gives me almost the same depth of field at 0.46. I tried to find some kind of formula for this but its inconsistent. Is there a formula so you can easily calculate the dof by multiplying the magnification? This far and near distance is making my head in though.

Is the difference between the near distance dof and far distance dof a product solely dependent upon how close the thing you focus on is? does the near and far dof always change proportionally?

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