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Old Sep 10, 2004, 2:28 AM   #1
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or perhaps the title should be the depth of a field. . .depth in a field?
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Old Sep 10, 2004, 3:44 AM   #2
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Nice ImKayd1 !

Beside a small aperture have you used hyperfocal distance to get that DOF ?
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Old Sep 10, 2004, 3:21 PM   #3
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Yes. Gotta tell ya, I had to look up hyperfocal, but yes I did.



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Old Sep 10, 2004, 3:47 PM   #4
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uh....wat's hyperfocal?

lol

great shot...

i love the closeup/landscape.....it's a little of both..

nice work

Vito
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Old Sep 13, 2004, 12:34 AM   #5
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photosbyvito wrote:
Quote:
uh....wat's hyperfocal?

lol

great shot...

i love the closeup/landscape.....it's a little of both..

nice work

Vito
It's a trick to get the greatest DOF by choosing to focus roughly 1/3 of the way into your pic.... I'm not worth a darn at explaining it, just go here...
http://www.vividlight.com/articles/3513.htm
Hope that helps.
Nice pic by the way ImKayd1
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Old Sep 13, 2004, 6:54 AM   #6
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GoCubs wrote:
Quote:
photosbyvito wrote:
Quote:
uh....wat's hyperfocal?

lol

great shot...

i love the closeup/landscape.....it's a little of both..

nice work

Vito
It's a trick to get the greatest DOF by choosing to focus roughly 1/3 of the way into your pic.... I'm not worth a darn at explaining it, just go here...
http://www.vividlight.com/articles/3513.htm
Hope that helps.
Nice pic by the way ImKayd1
Yes, that's it GoCubs!

There are many explanations of hyper focal distance.

The most appropriate are complicated and involve mathematical formulas.

So, let me try to explain it in a rough way to understand in a pragmatical way what's behind that 1/3 rule of thumb .

Well, let's face the problem ImKayd1 had to face in tat flower field shot.

There are flowers from the bottom of the shot till the top.

Their distance ranges from few feet to almost infinity, in optical terms.

So , how could she focus them all ?

Ok, keeping aperture as small as possibile is a good start but it is not enough !

Where should she focus ?

To the end of the field, i.e. to infinity ?

In this case the flowers next to her would have been out of focus.

Pointing to the middle of the field sounds good but ... they are still too far and the flowers next to her will still be out of focus.

She should have pointed to 1/3 of the distance between the nearest object se wanted on focus ( the bottom part ) and the farest one ( the top part, in this particular shot ).

Why ?

Well, flowers next to her would have been on focus,right ?

But what about flowers in the distance ?

Wouldn't they be out of focus ?

The answer is YES, they would, but YOU WON'T NOTICE IT !!!!

Since flowers in the distance are smaller and smaller the loss of details on them caused by being out of focus will not be so noticeable !

I attach an image showing the effect of Depth Of Field in the two cases: pointing to 1/2 and pointing to 1/3.

If you want you can also read a more accurate description here , where you will also find a link to an Hyper Focal Distance Calculator.
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Old Sep 13, 2004, 8:09 AM   #7
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thanks guys!

i think i might have to try this out too....

Vito
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Old Sep 13, 2004, 8:16 AM   #8
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Beautiful picture and very useful explainations.
thank you all!
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