I have setup an LDR with Op-Amp and it works just fine. I have been looking at using the TI parts and have some on order but may go with the LDR if I can generate a curve to allow voltage to lumens.

I have been thinking of mounting the board in an enclosure with an electronics ballast then start with total darkness then generate a curve from 0-100% but this does not follow ambient lighting.

Any thoughts?

Thanks to all that has replied,

Scott