What's with changing Neeson's hands?

Rating: 6/10 (23 August 2014)

More interesting movie that I originally thought it would be. The plot grows as it advances, and you really get into the whodunit of it.
But, why change Neeson's hands on several close-ups during the movie? Does he doesn't like his hands? Is it a decision the Director makes? Based on what?
Such decision brakes continuity and brings down quality of movie.
It's like "photoshopping" a photograph, or maybe it's worse than that. It might be very common to make such changes during production or edition (enhancing body parts, or bringing body models on certain close-ups), but when it's made cheaply brings the whole picture down.
Just saying