Hyperfocal Distance App

Can someone help me understand the information giving in the app screen shot? Please

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You should be able to figure out everything from these pictures:

http://www.dofmaster.c​om/dofjs.html

If I understand right this is telling me that if I place my camera 9' 3" from subject that I will have a distance of sharpness from that point to 10' 9". Correct?

extrememc wrote in post #12502305
If I understand right this is telling me that if I place my camera 9' 3" from subject that I will have a distance of sharpness from that point to 10' 9". Correct?

No.
It tells you that if you placed your camera 10' from the subject (that's the distance you selected), everything from 9'3" from the camera, to 10'9" from the camera will be sharp.

Or, from 0.68' in front of the subject (which itself is 10' from the camera), to 0.78' behind the subject will be in focus.

Hermeto wrote in post #12502332
No.
It tells you that if you placed your camera 10' from the subject (that's the distance you selected), everything from 9'3" from the camera, to 10'9" from the camera will be sharp.

Or, from 0.68' in front of the subject (which itself is 10' from the camera), to 0.78' behind the subject will be in focus.

Ok I understand now. Now if I set my camera on a tripod to shot standing half body shots, and half body seated poses. What would be a good height to set camera to focus with center point?

extrememc wrote in post #12502347
Ok I understand now. Now if I set my camera on a tripod to shot standing half body shots, and half body seated poses. What would be a good height to set camera to focus with center point?

I don't see why you should limit yourself to using only the center focus point in that scenario, but if I had to do that, for half body I'd focus on the chest - paying attention that the total depth of field (1.46' in this case) is enough to cover the 'depth' of the subject.

In this particular case it should be enough, but you have to be aware of the total DoF always!

I am trying to setup where I can have my subject seated or standing a achieve the same sharpness without moving the camera height or focal length (which will be 17 to 24mm using 1.6 crop).

Okay, I get it, but you can still use the focusing point that is closest to the eyes ( the top or side ones, depending on camera orientation.
Also, for portraits at that distance (10' in your case), I'd go with slightly longer focal lengths, just to make sure that there is no perspective distortion of the subject's face.

Hermeto wrote in post #12502381
Okay, I get it, but you can still use the focusing point that is closest to the eyes ( the top or side ones, depending on camera orientation.
Also, for portraits at that distance (10' in your case), I'd go with slightly longer focal lengths, just to make sure that there is no perspective distortion of the subject's face.

When I set up I use a 10' x 12' BG I generally place subject 2' to 4' from BG. Depending on number of subjects no more the 6. I shoot wide so that I fill the frame which will allow me to crop to any size. Should I move camera back to 12' and using mention focal length or 10' with longer?

extrememc wrote in post #12502391
When I set up I use a 10' x 12' BG I generally place subject 2' to 4' from BG. Depending on number of subjects no more the 6. I shoot wide so that I fill the frame which will allow me to crop to any size. Should I move camera back to 12' and using mention focal length or 10' with longer?

2'-4' in front of the BG is usually not enough to get rid of wrinkles, I'd go with 6', roughly.
6' from the subject is usually good enough to prevent facial distortion.
Also, cropping is usually not required for staged, studio portraits since you have time to set everything the way you like, plus without cropping you'll keep the maximum sharpness.

So yes, 12' should be better - but than again, it all depends on available space.

OK thanks for your advice. I will put this to practice this week.