Jump to content


Photo

Could focus problems be because...


  • Please log in to reply
5 replies to this topic

#1 Phillip Mosness

Phillip Mosness
  • Basic Members
  • PipPip
  • 85 posts
  • Other

Posted 12 February 2013 - 06:40 PM

if a loading issue?

 

Just got an HD transfer back of some 50D and the left side of the screen is noticeably softer than the razor sharp right side.

It was the first footage I shot with the camera, and nothing since then seems to have the same issue.

The post house is going to look at it again, but they suggested it could be due to a loading problem, like the loop wasn't quite right.

I suspect it's a focus issue with the Spirit gate, but they say it wouldn't only be on one side. 

Other footage with the same lens, etc seems perfectly fine.

Anyone ever have this?

Thanks,

Phillip


  • 0

#2 Matthew W. Phillips

Matthew W. Phillips
  • Sustaining Members
  • 1792 posts
  • Other

Posted 12 February 2013 - 08:35 PM

I doubt it is a loading issue unless you loaded the film in such a way as that the infocus part was closer to the gate than the rest of it. But for extreme focus problems, I really doubt the loading had anything to do with it. Sounds to me like a lens issue or a transfer issue.


  • 0

#3 Geoff Howell

Geoff Howell
  • Basic Members
  • PipPipPip
  • 168 posts
  • Other

Posted 13 February 2013 - 08:55 AM

what's the registration on your footage like? 

 

the only loading error I've ever had that resulted in focus issues also resulted in the film bouncing around: not a crazy amount but similar to what you see in a lot of super8 footage.


  • 0

#4 Phillip Mosness

Phillip Mosness
  • Basic Members
  • PipPip
  • 85 posts
  • Other

Posted 13 February 2013 - 06:19 PM

Registration seems fine.  Nothing else that would indicate a problem.

The lens is a PL mount Zeiss that's been great in all other footage, so I'm again thinking transfer. At least I hope.


  • 0

#5 Dom Jaeger

Dom Jaeger
  • Basic Members
  • PipPipPipPip
  • 1599 posts
  • Other
  • Melbourne, Australia

Posted 13 February 2013 - 07:23 PM

If you examine the neg over a lightbox with a magnifying loupe you should be able to see if the footage itself has the problem. If it's OK then you can assume the transfer is responsible.


  • 0

#6 Phillip Mosness

Phillip Mosness
  • Basic Members
  • PipPip
  • 85 posts
  • Other

Posted 01 March 2013 - 07:11 PM

Well good news, it wasn't the camera. The post house put up the footage again and it's fine now. It was some problem with the film not seating properly in the gate.

On a side note the Optex converted Zeiss 12-120 T 2.4 is a swell lens.


  • 0


Visual Products

Tai Audio

FJS International, LLC

Media Blackout - Custom Cables and AKS

Opal

Rig Wheels Passport

CineLab

Wooden Camera

Gamma Ray Digital Inc

CineTape

rebotnix Technologies

Broadcast Solutions Inc

Metropolis Post

Willys Widgets

Paralinx LLC

The Slider

Technodolly

Aerial Filmworks

Abel Cine

Ritter Battery

Glidecam

Paralinx LLC

Tai Audio

Opal

Aerial Filmworks

rebotnix Technologies

Media Blackout - Custom Cables and AKS

Gamma Ray Digital Inc

Visual Products

Glidecam

Abel Cine

Metropolis Post

Ritter Battery

CineTape

The Slider

Willys Widgets

FJS International, LLC

Rig Wheels Passport

Technodolly

Wooden Camera

Broadcast Solutions Inc

CineLab