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ISO and Depth of Field while shooting RAW on Scarlet (or Epic)

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Banks Meador
ISO and Depth of Field while shooting RAW on Scarlet (or Epic)
on May 9, 2014 at 3:19:12 pm

Hi, guys...

My business partner and I have a bit of a debate, and we really want to learn from it. Our question is:

"Does the ISO affect depth of field?"

That is to say, does manipulating the ISO when shooting RAW R3D on a Scarlet GIVE YOU MORE LATTITUDE to to then change your F-stop to affect depth of field? Or does it matter what the ISO setting is?

I know setting the f/stop to a more open setting allows for narrower DOF, but since you can manipulate the ISO while shooting OR in post, doesn't it make sense the ISO does NOT influence how open or closed the aperture is (therefore influencing the DOF)?

ISO does not have to be changed at the shoot to create a different DOF, right?

Just checking in and seeking to learn.

Thanks!

Banks



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David Battistella
Re: ISO and Depth of Field while shooting RAW on Scarlet (or Epic)
on May 9, 2014 at 8:29:35 pm

The ISO affects our depth of field if you move the aperture based on the ISO setting.

IE:

ISO 320 f11
ISO 800 f8.0

Same exposure, different DOF.

If your lens stays at F11 and you move the ISO all over the place you will be affecting the exposure but NOT the DOF.

Just download a DOF calculator to your phone and when you punch in a few numbers you will see how the DOF changes.

Battistella

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http://www.bottegabattistella.com/blog/


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