Laptops in Sunlight?

[patfactorx]

I know this has been asked before but are there any new laptops that be used in direct sunlight?

 

[hang-the-9]

Dell XPS M1530, the review on this stated at max brighness it could be used outside.

 

[patfactorx]

Is there a brightness spec I should be looking for?

 

[hang-the-9]

Not sure for bright light, 500 cd/m maybe will work. In lumens, a 2,000 projector will be pretty bright in a lit room, for daylight you may need 3,000 lumens though, maybe higher.