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Old Oct 23, 2008, 10:49 AM   #1
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Depth of field button is useful depending on the photographer's eye.
Is there a more technical way, not to see but to get a desired depth of field.
Suppose that you put the camera on a tripod and you place a book in front of your lens with a perspective of 45ยบ.
Is it possible to manual focus to the nearest point, record the distance, the same with the remote point and let the camera calculate the appropriate aperture to get all the book in focus?
In situations like this one (AI-S micro 105 or 55 lens) I use the rule of the thirds: one third in front, two thirds behind the point of focus at the smallest aperture?
Those old lenses have marks and curves printed for each f-stop to know correspondant depth of field. Using this method I have to fit the closest and the remote focus points (on the lens ring) into a pair of these depth of fields marks.
Maybe I am out to date but I like those non autofocus micro lenses.
This lens (18-200) does not have any kind of marks.
How do you solve a situation like this one?

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Old Oct 23, 2008, 7:28 PM   #2
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I don'tthink the D300 will do what you're asking for here.

Have you seen the on-line DOF calculators? This one looks quite useful:

http://dofmaster.com/
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Old Oct 24, 2008, 12:30 PM   #3
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Yes, I know those calculators. Thanks.
Anyway, I think that at this time of the digital era it should be a feature on this kind of cameras.
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Old Oct 24, 2008, 1:05 PM   #4
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dstonek wrote:
Quote:
Is it possible to manual focus to the nearest point, record the distance, the same with the remote point and let the camera calculate the appropriate aperture to get all the book in focus?
You got the wrong camera for this... :-)

I've a D300 too, but on my Canon dSLRs you can aim the two AF points on the near and far focus target areas and the camera does it all automatically!
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Old Oct 24, 2008, 2:15 PM   #5
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Aha!
Quote:
but on my Canon dSLRs
Does plural mean many years ago?
Having 51 points to select focus I suppose it shouldn't be a hard work to implement it in D300. A firmware with this tool would be welcome!

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Old Oct 26, 2008, 5:29 PM   #6
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dstonek wrote:
Quote:
Does plural mean many years ago?
Not really my xxDs have it, but then my 1D MrkII (with 45 AF points) don't... :O

http://www.cambridgeincolour.com/forums/thread83.htm
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Old Dec 2, 2008, 9:20 PM   #7
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tuff crowd!:|
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