L* jump

• Subject: L* jump
• From: "eugene appert" <email@hidden>
• Date: Thu, 22 Nov 2007 11:38:26 -0500
• Delivered-to: email@hidden
• Delivered-to: email@hidden

Hello,  

 

I have a quick Photoshop question.  Can anyone explain why L* values increase considerably in brightness when separated from the a*&b* channels. The jump is global, (independent of colour information) and usually more than L*10. 

 

thanks



Eugene 

 

 

 
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