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how to test a lens


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#1 sandeep sony

sandeep sony
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Posted 16 May 2010 - 10:58 PM

how to test a lens if it is good or bad?
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#2 Henri Titchen

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Posted 17 May 2010 - 01:08 AM

Hi,

This is usually a job for a skilled technician. There are two aspects to test a lens, physical issues and optical issues.Simple tests however can be carried out photographing test charts.

There are often use three pieces of equipment for optical testing of cine lenses.

MTF tester
Here is an example of an MTF tester used for testing PL mount lenses.
http://www.keystone-...F_Tester_K9.pdf


Lens Projector
Here is an example of a lens projector used for testing PL mount lenses.
http://www.chrosziel...rojektion_E.pdf


Collimator
http://www.motionpic...tion_Manual.pdf
http://www.chrosziel...llimation_E.pdf

Cheers.

how to test a lens if it is good or bad?


Edited by Henri Titchen, 17 May 2010 - 01:09 AM.

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The Slider

Aerial Filmworks

CineTape

Ritter Battery

Tai Audio

Rig Wheels Passport

Metropolis Post

Gamma Ray Digital Inc

Wooden Camera

Broadcast Solutions Inc

New Pro Video - New and Used Equipment

Glidecam

Technodolly

Media Blackout - Custom Cables and AKS

CineLab

Paralinx LLC

rebotnix Technologies

Visual Products

FJS International, LLC

Willys Widgets

Abel Cine