TrueDoF-Pro DoF Calculator

This update adds optional readout of image blur for objects at the extremes of depth of field and at focus (where image blur will be non-zero if you opt to include the effects of diffraction). Why would this be useful? After all, image blur at the extremes of depth of field should simply be your specified circle of confusion. Well, not if you focus beyond the hyperlocal distance. Some landscape photographers place greater emphasis on image sharpness for far objects (the horizon or, say, a line of trees on a ridge) than for near objects. They reason that the eye/brain expects distant objects to be sharp but can tolerate a wee bit of image blur up close. So they focus a little beyond the hyperlocal distance. Well, now you can have a readout of image blur and better judge where you would like to place focus. By the way: You'll have the far limit pointer at infinity, but don't lock it in place. Locking it engages Hyperfocal Mode, which you don't want in this case. The update also adds more flexible options with regard to switching off numerical readouts, for those who prefer a more minimalist interface — one that relies on the use of analog scales. If you're new to TrueDoF-Pro, don't forget to check out the Links page where, among other things, you will find links to articles on image sharpness, depth of field, etc. You may end up looking at such things a little differently.