Jump to content


Photo

Lens fo B&H 70dr


  • Please log in to reply
2 replies to this topic

#1 Stacy R Fillion

Stacy R Fillion
  • Basic Members
  • PipPip
  • 19 posts
  • Student
  • Burnaby B.C.

Posted 06 April 2007 - 06:17 PM

Hello I just recently purchased a 16mm 70-dr and it came with a 25mm f/2.7 Animar Balcote lens. My question is that it only has a ring for f-stop and nothing to set feet at. Is the lens constructed to always be in focus no matter what stop your using?
  • 0

#2 Clive Tobin

Clive Tobin
  • Basic Members
  • PipPipPipPip
  • 402 posts
  • Industry Rep
  • Spokane Valley, WA, USA

Posted 06 April 2007 - 08:45 PM

Hello I just recently purchased a 16mm 70-dr and it came with a 25mm f/2.7 Animar Balcote lens. My question is that it only has a ring for f-stop and nothing to set feet at. Is the lens constructed to always be in focus no matter what stop your using?

It is no doubt intended for amateur point and shoot filming, and the focus is likely at 25 feet. So as long as you are stopped down a bit for filming in daylight, something like 12 feet to infinity should be in reasonable focus. In very bright sunlight at say f/22 you would be okay filming something that was just a few feet away. Your exposure time is 1/42 at 24 FPS so you will be stopping down more than with most cameras. I don't have any depth of field tables handy or I could be more specific.
  • 0

#3 Charles MacDonald

Charles MacDonald
  • Sustaining Members
  • 1157 posts
  • Other
  • Stittsville Ontario Canada

Posted 06 April 2007 - 09:06 PM

Hello I just recently purchased a 16mm 70-dr and it came with a 25mm f/2.7 Animar Balcote lens. My question is that it only has a ring for f-stop and nothing to set feet at. Is the lens constructed to always be in focus no matter what stop your using?


There are some "fixed focus" lenses intended to make it easier to do home movies. the focus is probaly designed to be about 10 feet, which at smaller stops will cover a lot....

Sugest finding a better lens. if you actually want to use the unit.
  • 0


Rig Wheels Passport

CineLab

Aerial Filmworks

The Slider

Metropolis Post

Wooden Camera

Broadcast Solutions Inc

FJS International, LLC

Paralinx LLC

Visual Products

New Pro Video - New and Used Equipment

Media Blackout - Custom Cables and AKS

rebotnix Technologies

CineTape

Tai Audio

Willys Widgets

Technodolly

Glidecam

Abel Cine

Ritter Battery

Gamma Ray Digital Inc

Ritter Battery

Paralinx LLC

Aerial Filmworks

The Slider

CineLab

New Pro Video - New and Used Equipment

FJS International, LLC

Media Blackout - Custom Cables and AKS

Visual Products

Glidecam

Metropolis Post

Abel Cine

Tai Audio

Wooden Camera

Rig Wheels Passport

CineTape

Broadcast Solutions Inc

Technodolly

rebotnix Technologies

Willys Widgets

Gamma Ray Digital Inc