Shuttershot theme problem

Hi, i have major problem with slides for front page. I inserted 6 pictures of 1152×864 dimensions and when i go view it, it’s get zoomed in.
I looked in Css but i dont know where the problem so if any one had same problem please advise me. U can see problem in https://www.perka-baits.com/
And where the perka-baits sign is u can see that the picture is “cuted”.