JB/T 8251-1999
Colour contribution index of camera lenses (English Version)

Standard No.

JB/T 8251-1999

Language

Chinese, Available in English version

Release Date

1999

Published By

Professional Standard - Machinery

Latest

JB/T 8251-1999

Replace

JB/T 8251-1995

Scope

This standard specifies a method for determining the color contribution index of a photographic lens. Recommended values for camera lens color contribution index and its limit deviation are also proposed. This standard applies to photographic lenses using color film as the photosensitive material.

JB/T 8251-1999 history

• 1999 JB/T 8251-1999 Colour contribution index of camera lenses
• 0000 JB/T 8251-1995