Jump to content




Photo

Lens for Large DOF and High Magnification

lens lense c-mount DOF magnification high-speed

  • Please log in to reply
1 reply to this topic

#1 Josh Marino

Josh Marino

    New

  • Basic Members
  • Pip
  • 1 posts
  • Student

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


  • 0




#2 David Mullen ASC

David Mullen ASC
  • Sustaining Members
  • 18788 posts
  • Cinematographer
  • Los Angeles

Posted 22 September 2015 - 10:41 AM

Unfortunately only by stopping down the lens can you increase depth of field.
  • 0



Zylight

Abel Cine

CineLab

Willys Widgets

The Slider

Aerial Filmworks

CineTape

Glidecam

Technodolly

Paralinx LLC

Tai Audio

Ritter Battery

Visual Products

Pro 8mm

Rig Wheels Passport

Media Blackout - Custom Cables and AKS

rebotnix Technologies

Broadcast Solutions Inc

Ritter Battery

rebotnix Technologies

Zylight

Willys Widgets

The Slider

Tai Audio

Abel Cine

Visual Products

Technodolly

CineTape

Aerial Filmworks

Pro 8mm

Broadcast Solutions Inc

Media Blackout - Custom Cables and AKS

Glidecam

CineLab

Rig Wheels Passport

Paralinx LLC