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Lens for Large DOF and High Magnification

lens lense c-mount DOF magnification high-speed

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#1 Josh Marino

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Posted 22 September 2015 - 10:39 AM

Hello,

 

I am capturing high-speed videos of water droplets using a PhotonFocus TrackCam (C-mount), capable of 1000+ fps. The lens I was using was a Computar 18-108mm/f2.5-16, that was lying around. I was able to have decent focus for one droplet (diameter of ~1 mm), but was having trouble getting a DOF for multiple droplets close together, shot from a little over a foot away. What lens would you recommend to use in order to have ~5mm DOF with a magnification of 1-2X? The lenses I have found so far online are either capable of doing one or the other (DOF/magnification), but not both.

 

{I am already lighting the scene for 1000+ fps}

 

 

Any help would be appreciated,

Josh


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#2 David Mullen ASC

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Posted 22 September 2015 - 10:41 AM

Unfortunately only by stopping down the lens can you increase depth of field.
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