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Old Jan 27, 2005, 2:59 PM   #1
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I'm searching the internet for a hyperfocal distance chart that I can just print off somewhere around, lets say, 35-150mm. I just want a chart to carry along with me while I'm backpacking.
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Old Jan 27, 2005, 3:27 PM   #2
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CaliBoy wrote:
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I'm searching the internet for a hyperfocal distance chart that I can just print off somewhere around, lets say, 35-150mm. I just want a chart to carry along with me while I'm backpacking.
http://www.dofmaster.com/dofjs.html
The software on there called DOFMaster (link at top of page) is really good.
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Old Jan 27, 2005, 4:14 PM   #3
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Are there any tutorials for using DOFMaster. It takes me a while to understand how to use a program like this.
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Old Jan 27, 2005, 5:46 PM   #4
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CaliBoy wrote:
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... 35-150mm. ...
You can find all kinds of stuff via Google: try "circle of confusion" (with quotes) as a search term.

You didn't say what camera you are using, but while most digicam's focal lengths are stated in terms of 35mm equiv, the real focal length is typically 1/5th of that. So you lens is really something like 5-30mm. Use the real focal length in the depth of field calculators, not the 35mm equiv.
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Old Jan 27, 2005, 6:12 PM   #5
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I'm using a D70 with the 18-70 kit lense. For the focal lengh don't I just multiply it by 1.5 or 1.6 which would turn the lense into a 27-105mm.
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Old Jan 27, 2005, 7:01 PM   #6
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Yes, the D70 has a 1.5 crop factor. So yourREAL 18mm-70mm lenshas an equivalence of a 27mm-105mm in the 35mm format.

But for DOF calculations you want to use the REAL focal length. That is what BillDrew was saying in his post. To use the real F/L. :-)
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