Pretty much the same? Transition is a royalty thing. Or are these lens different?

Which lens adapts faster to UV?

Thanks

Transitions weren't possible on shield/toric frames, so they went with Photochromatic. Not sure if they went with that on the dual lenses as well. They only list the Photochromatic lenses in the lens page now, so they might have.

Photochromic is faster

And it's made by Oakley.

Here goes, stick with me...

All twin-lens/spherical versions utilize Transitions photochromic technology (aka "Activated by Transitions" or "Transitions SOLFX"). These lenses can be identified by the Transitions "swirl" logo engraved on the lower left corner.

Transitions technology is currently incompatible with a toric shield lens geometry (ala Radar), therefore these lenses utilize Oakley's own photochromic technology instead of Transitions. These lenses can be identified by the word "PHOTOCHROMIC" engraved in the lower left corner.

From a performance standpoint both technologies achieve class-leading characteristics that far surpass the competition, including fast activation and fadeback, minimized environmental sensitivity, and excellent durability. They both rock.