Jump to content


Photo

vignetting on Ultra 16


  • Please log in to reply
10 replies to this topic

#1 Daniel Carruthers

Daniel Carruthers
  • Basic Members
  • PipPipPipPip
  • 334 posts
  • Cinematographer
  • Canada

Posted 03 June 2009 - 12:34 PM

Hi The lens Ive been using on my new Ultra16mm camera has been vignetting
the lens is a 12-120mm Angeniux zoom lens
it seems to vignette on anything wider than 30mm and only when Im focused at 7feet or closer.

My question is, is there a way to fix that somehow?
when ever I use my c-mount primes they seem to work fine with no vignetting
and even with a 10mm prime there is no vignetting, but how come on the Angeniux?
any ideas?
  • 0

#2 Jean-Louis Seguin

Jean-Louis Seguin
  • Basic Members
  • PipPipPipPip
  • 719 posts
  • Other
  • Montreal, Canada

Posted 03 June 2009 - 03:08 PM

Hi The lens Ive been using on my new Ultra16mm camera has been vignetting
the lens is a 12-120mm Angeniux zoom lens
it seems to vignette on anything wider than 30mm and only when Im focused at 7feet or closer.

My question is, is there a way to fix that somehow?
when ever I use my c-mount primes they seem to work fine with no vignetting
and even with a 10mm prime there is no vignetting, but how come on the Angeniux?
any ideas?




Hi Daniel,

The image forming circle of the Angenieux 12-120mm is notoriously small and barely covers the regular 16mm format. Unfortunately, there is nothing you can do.

If you want an inexpensive zoom that covers the whole frame, you can try the Angenieux 15-150mm.
Canon makes a 15-150 and it also has plenty of coverage. Generally primes have more coverage than zooms.

Cheers,
Jean-Louis
  • 0

#3 Luke Hill

Luke Hill
  • Basic Members
  • PipPip
  • 20 posts
  • Director

Posted 04 June 2009 - 09:01 AM

This is really good to know! Was under the impression that an Ultra 16mm conversion would work with the exact same lenses as regular 16mm.
  • 0

#4 Saul Rodgar

Saul Rodgar
  • Basic Members
  • PipPipPipPip
  • 1682 posts
  • Cinematographer

Posted 04 June 2009 - 09:32 AM

This is really good to know! Was under the impression that an Ultra 16mm conversion would work with the exact same lenses as regular 16mm.


A 15-150 (covers S16) is a good option, however, it is a very large and heavy lens. You may want to try the 10-150 instead, as it is wider, almost as fast, but smaller and should cover U16 properly (it covers S16 at 10mm focusing above 20').
  • 0

#5 Luke Hill

Luke Hill
  • Basic Members
  • PipPip
  • 20 posts
  • Director

Posted 04 June 2009 - 10:11 AM

Is that specific to the Angenieux lens or would it apply to any lens of that size?
  • 0

#6 Jean-Louis Seguin

Jean-Louis Seguin
  • Basic Members
  • PipPipPipPip
  • 719 posts
  • Other
  • Montreal, Canada

Posted 04 June 2009 - 10:21 AM

A 15-150 (covers S16) is a good option, however, it is a very large and heavy lens. You may want to try the 10-150 instead, as it is wider, almost as fast, but smaller and should cover U16 properly (it covers S16 at 10mm focusing above 20').



While the 10-150 may be shorter in length than a 15-150, it is a heavier lens than the 15-150mm or the 12-120, both of which weigh about the same.

As far is coverage is concerned, it should be mentioned that the 10-150 actually exhibits increased vignetting when zooming from 10 to 50mm at close to medium distances. Because of all these limitations, I don't find the 10-150 is a practical lens for super 16 or ultra 16.

The 15-150 will cover super 16 at all focal lengths, focusing distances and aperture settings.

Cheers,
Jean-Louis
  • 0

#7 Adam Garner

Adam Garner
  • Basic Members
  • PipPip
  • 95 posts
  • Other
  • Austin, TX

Posted 04 June 2009 - 10:28 AM

I think this issue is with this particular lens

Ultra typically allows for all standard 16 lenses. Super covers about 20% more real estate, so needs very specific lenses to cover said real estate.

btw, Luke, shot 6 rolls on the Scoopic Ultra last week and it's getting processed/transferred next week. I'll keep ya in the loop. Did some sound sync tests as well and it runs quiet enough.

Adam.
  • 0

#8 Luke Hill

Luke Hill
  • Basic Members
  • PipPip
  • 20 posts
  • Director

Posted 04 June 2009 - 11:46 AM

btw, Luke, shot 6 rolls on the Scoopic Ultra last week and it's getting processed/transferred next week. I'll keep ya in the loop. Did some sound sync tests as well and it runs quiet enough.


Please do, Adam. I'd love to see it.

Edited by Luke Hill, 04 June 2009 - 11:49 AM.

  • 0

#9 Saul Rodgar

Saul Rodgar
  • Basic Members
  • PipPipPipPip
  • 1682 posts
  • Cinematographer

Posted 04 June 2009 - 07:49 PM

While the 10-150 may be shorter in length than a 15-150, it is a heavier lens than the 15-150mm or the 12-120, both of which weigh about the same.

As far is coverage is concerned, it should be mentioned that the 10-150 actually exhibits increased vignetting when zooming from 10 to 50mm at close to medium distances. Because of all these limitations, I don't find the 10-150 is a practical lens for super 16 or ultra 16.

The 15-150 will cover super 16 at all focal lengths, focusing distances and aperture settings.

Cheers,
Jean-Louis


We must be talking about different lenses, or perhaps they differ from lens to lens. I own a 10-150 T2.2 and a 15-150 T2.1. The 15-150 is much heavier and longer than the 10-150. The 10-150 does vignette in the medium range, but I have found mostly between the minimal focus mark and about 20'. Between 20' and infinity it seems to be OK.

Another good choice for U16 are latter 17-68 T2.2 Angenieux, which covers S16 in the entire range, but are not very wide at all.
  • 0

#10 Mike Rizos

Mike Rizos
  • Basic Members
  • PipPipPipPip
  • 330 posts
  • Other

Posted 04 June 2009 - 09:37 PM

There are two Angenieux 15-150. One is f2.8 and the other f1.9. The first is smaller than the 12-120 with the same front diameter. The latter is a huge lens, more like the 25-250 for 35mm.
  • 0

#11 Gregory PAUL

Gregory PAUL
  • Basic Members
  • PipPip
  • 60 posts
  • Camera Operator
  • FRANCE

Posted 19 September 2009 - 10:40 AM

Hello,

Has one of you experienced the Zeiss 10-200 2,8 with Ultra 16 ? I wonder if it works fine with U16 in wide position.

Greg
  • 0


Tai Audio

CineTape

Willys Widgets

Gamma Ray Digital Inc

Opal

FJS International, LLC

Abel Cine

Broadcast Solutions Inc

Visual Products

Technodolly

Rig Wheels Passport

The Slider

Wooden Camera

Ritter Battery

Media Blackout - Custom Cables and AKS

Aerial Filmworks

rebotnix Technologies

Metropolis Post

Paralinx LLC

CineLab

Glidecam

Broadcast Solutions Inc

FJS International, LLC

Media Blackout - Custom Cables and AKS

Technodolly

Tai Audio

Metropolis Post

Rig Wheels Passport

The Slider

Abel Cine

Wooden Camera

CineTape

rebotnix Technologies

Aerial Filmworks

Visual Products

Gamma Ray Digital Inc

Glidecam

Opal

Willys Widgets

Paralinx LLC

CineLab

Ritter Battery