how to test a lens

[sandeep sony]

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

[Henri Titchen]

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-intl.co.jp/contents/carlzeiss/tester/MTF_Tester_K9.pdf

 

 

Lens Projector

Here is an example of a lens projector used for testing PL mount lenses.

http://www.chrosziel.com/data/chrosziel/produkte/documents/Projektion_E.pdf

 

 

Collimator

http://www.motionpicturecameras.net/MPCnet_Collimator_Colimador/Chrosziel_Collimator_Instruction_Manual.pdf

http://www.chrosziel.com/data/chrosziel/produkte/documents/Kollimation_E.pdf

 

Cheers.

 

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

Edited May 17, 2010 by Henri Titchen