How to get sharp eyes when using wide aperture?

10 years 5 months ago #310349 by The Original Daisy
If you are shooting a portrait with the backdrop being a gorgeous landscape that you want to be sharp. How can you get both sharp? I have set my autofocus to spot and focused on the eye, and it's sharp, but now the background isn't as sharp as I want it. It seems like a never ending back and forth.

I'm about to just take the sharp eyes and make a composite with an image that has a sharp background. Would appreciate any tips.


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10 years 5 months ago #310379 by Ulrich Brodde
Did you use "Spot", symbolized by this



or this



If the first, this was for for exposure measurement
and if the second it was choosing one focus point between others.

Both has nothing to do with depth of field you ask for.
If you choose an aperture with low number (2,8 or less) you will have a small depth of field
(only a small part of the image is sharp)
and if you choose a high number (16 or 22) you will get a great depth of field - that what you wanted.
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10 years 5 months ago #310415 by garyrhook
You need to get and study Bryan Peterson's Understanding Exposure. It sounds as if you are not yet fully competent with the elements of the exposure triangle, especially aperture.

And for what ti's worth, if your subject it the background, you don't need a person in the shot, up close. If your subject is a person that is up close, the background doesn't need to be in focus. Otherwise, you need to back way up.


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10 years 5 months ago #310561 by Stealthy Ninja
Get the person to stand FAR back into the landscape. There you go. :)
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10 years 5 months ago #310851 by John Landolfi
You can get an acceptable compromise by using the hyperfocal distance for the camera, lens and aperture you want to use.

Once you have determined the hyperfocal distance, place your subject at half that distance, and you will have the optimal DOF for that photo.

For a reference to Hyperfocal distance:
www.cambridgeincolour.com/tutorials/hyperfocal-distance.htm

and a calculator:
www.cambridgeincolour.com/tutorials/dof-calculator.htm

Post the result, if you decide to try it! :cheers:


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10 years 5 months ago #311013 by Vahrenkamp

garyrhook wrote: You need to get and study Bryan Peterson's Understanding Exposure. It sounds as if you are not yet fully competent with the elements of the exposure triangle, especially aperture.

And for what ti's worth, if your subject it the background, you don't need a person in the shot, up close. If your subject is a person that is up close, the background doesn't need to be in focus. Otherwise, you need to back way up.



One of the best books on photography. That and Scott Kelby's Digital Photography set too


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10 years 5 months ago #311285 by ShadowWalker

Ulrich Brodde wrote: Did you use "Spot", symbolized by this



or this



If the first, this was for for exposure measurement
and if the second it was choosing one focus point between others.

Both has nothing to do with depth of field you ask for.
If you choose an aperture with low number (2,8 or less) you will have a small depth of field
(only a small part of the image is sharp)
and if you choose a high number (16 or 22) you will get a great depth of field - that what you wanted.




:goodpost:


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