[pure-silver] Re: Large Format Tilt
- From: <C.Breukel@xxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 4 Dec 2007 10:45:30 +0100
I think I understand now. Perhaps you can tilt the plane such that the tilted
plane runs through the branches at 2 m and the trees at 10m , and calculate ,
hope that the DOF around the tilted plane (very narrow near the camera, getting
wider and wider further away). Perhaps you can see this DOF limit by stoping
down, or..you could calculate and visualize according to Bob Wheelter (I realy
sound like his disciple now, but I am not that much of a nerd..;-).. I do like
the theory, and read about it, less shure if I would use it often).
Anyway next to his software he wrote a manual (.pdf) which contains diagrams
about tilted planes and DOF, perhaps helpful. He claims that you can actually
see the DOF limits of a (tilted) plane at the widest F stop by moving the back
panel up or down a given distance, did not try that one though..guess it should
work
Good luck,
Cor
________________________________________
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Justin F. Knotzke
Sent: maandag 3 december 2007 19:45
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: Large Format Tilt
On 03/12/2007, Snoopy <snoopy@xxxxxxxxxx> wrote:
Point a laser pointer at it and focus on the dot??
Crap, and I just sold my phaser to captain kirk. ;-)
The problem isn't so much being able to find the actual point to focus on..
The problem is that I don't know how to focus correctly in this situation. The
best way to explain this is as follows:
Picture a scene that has three focal distances, 2 m, 5m, 10m. Which is to
say at the bottom of the image is the pond with leaves at 5m, in the middle is
over hanging branches at 2m, and at the back are more trees at 10m.
What technique should I use to focus correctly ?
Thanks
J
--
Justin F. Knotzke
jknotzke@xxxxxxxxxx
http://www.shampoo.ca
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