MGrayson
Subscriber and Workshop Member
Let's see... 40mm/30in .. at 25mm/in, so 40/750, but that's in radians, so multiply by 60, so 2400/750, and that's 3. Yep 3 degrees.I use an app called Tilt Calculator on the iPhone. Your Rodie 40 on a full frame 40x54mm sensor @f/11 and 30in from the horizontal plane does indeed come out with a calculated tilt of precisely 3 degrees to give you everything from your toes to infinity in focus.
Nice to know that the theory and practice matched :thumbs:
You need an app for that?
If our tilt indicators had more significant digits, I could see it, but the answer is usually rounded to the nearest half degree.
Now as for what wedge will be sharp - how high up in the trees will be clear - that you need to know sensor size and f-stop. Torger posted a truly wonderful paper on focus with tilts. VERY highly recommended.
--Matt
(I am, of course, joking about doing this mentally. Any calculation made at 5am is going to be wrong. :ROTFL