Digital BW, The Print

I'm sure I need to thank you for your prompt response, John,
But you may not be surprised to know that you've thrown good info at a
phillistine!

I do have excel but how do I set up the conversion?

And just as a taster what would an L* value of 14 equate to?

Interesting stuff for a Sunday afternoon !

Tony R



> John Moody wrote:

> Excel functions

> For Density to L
> 
> =IF(Density<=2.05274,116*((10^(-1*Density))^(1/3))-16,116*(((903.
> 3*10^(Densi
> 
> ty*-1)+16)/116))-16)

> For L to density
> 
> =IF(LAB_L>=8,LOG(((LAB_L+16)/116)^3)*-1,LOG(LAB_L/903.3)*-1)