• Lighting Design

  CTB light loss

  Posted by Nielsenr on December 8, 2006 at 11:06 pm

  Hi.

  How much is the light loss (stops) with a normal CTB 3200->5500 filter?

  Best regards,

  Rasmus Nielsen.

  Deleted User replied 19 years, 8 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Deleted User

  December 16, 2006 at 5:06 am

  [nielsenr] “How much is the light loss (stops) with a normal CTB 3200->5500 filter?”

  According to GamProducts (maker of GamColor gels): 1.7 stops.

  Hope this helps.

  – Peter
• 

  Deleted User

  December 16, 2006 at 5:16 am

  Just in case you mean a color conversion filter for use on a camera lens, rather than a full CTB gell mounted on a lighting instrument, Tiffen states their 80A & 80B blue filters result in a 2 stop light loss.

  – Peter

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