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filter to alter depth of field

filters depth of field focus distortion

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#1 Stefano Stroppa

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Posted 16 May 2015 - 11:29 AM

Is there such a filter that allows you to focus only on small part of the frame, (not necessarily in the middle, using a very wide lens (and working with f/stop around 2.8)? 

any experience with any of these filters?

 

the scene is the following: frontal shot of the nurse holding a big siring, I want to focus on the big distorted needle in the very foreground, blurring the rest of the image, and being able to rack focus to the character. Can I do it with a filter on set and not in post?

 

thank you so much :) 


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#2 Gregory Irwin

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Posted 16 May 2015 - 12:53 PM

What about swing and tilt lenses?

G
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#3 Mark Dunn

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Posted 16 May 2015 - 12:59 PM

Or a split dioptre, which is half a closeup lens. The rest of the filter mount is empty.

http://www.ebay.co.u...=item51a8c95459

Or a macro lens which will focus very close then rack out.

The "very wide lens" you speak of may focus close enough anyway.


Edited by Mark Dunn, 16 May 2015 - 01:01 PM.

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