Apparently they're going to make a new Star Trek movie that centers around the original crew prior to their "going where no man has gone before" (to which my eldest daughter gleefully screams, "The ladies room!", thereby making the joke officially multi-generational).
Anyway, the EW article announcing this shows this picture.
Now, Scotty was not a lefty, so why is he holding his phaser in his left hand? Well, they hid it entirely during the series, but Doohan was missing the middle finger of his right hand from a WWII battle injury. It's kinda fun watching the old series and seeing all the gyrations they go through to not show that hand.
Maybe that's why Scotty could always get things done so quickly; he only had to count to nine when everyone else had to go on to ten.