Jump to content


Photo

Testing lenses (Beginner question)


  • Please log in to reply
No replies to this topic

#1 Melanie Miko

Melanie Miko

    New

  • Basic Members
  • Pip
  • 2 posts
  • Student
  • Hamburg

Posted 24 May 2017 - 11:56 AM

Hi guys,

 

I would like to understand how a lens can be tested in preparation for a shoot. I get how you check whether the lens barrel calibration is accurate. However there are so many different charts you can test the symmetry, distortion and other factors with and I would love to know how it is done and what the charts are called for each test.

 

Also I once saw a camera assistant test his lens and he had written -2 -1  0  +1 +2 on a paper which was pinned on a wall. Then his second AC had to point to each of the numbers. Can you tell me what these numbers are for because usually you always test at the widest f-stop, so I guess that was not changed here. 

 

Thank you,

 

Melanie

 

 


  • 0


Support Cinematography.com and buy gear using our Amazon links!
PANASONIC LUMIX GH5 Body 4K Mirrorless Camera, 20.3 Megapixels, Dual I.S. 2.0, 4K 422 10-bit, Full Size HDMI Out, 3 Inch Touch LCD, DC-GH5KBODY (USA Black)



Broadcast Solutions Inc

Gamma Ray Digital Inc

Technodolly

The Slider

Glidecam

Ritter Battery

rebotnix Technologies

Willys Widgets

FJS International, LLC

Lenser

Tai Audio

Metropolis Post

Quantum Music Works

CineTape

Abel Cine

CineLab

Media Blackout - Custom Cables and AKS

Rig Wheels Passport

Aerial Filmworks

Visual Products

Paralinx LLC

Gamma Ray Digital Inc

Technodolly

Visual Products

rebotnix Technologies

Abel Cine

Metropolis Post

Aerial Filmworks

CineLab

Paralinx LLC

Tai Audio

Ritter Battery

Media Blackout - Custom Cables and AKS

Lenser

FJS International, LLC

Rig Wheels Passport

Quantum Music Works

Glidecam

The Slider

CineTape

Broadcast Solutions Inc

Willys Widgets