Can I access my photos loaded onto my iPad 2 from a Canon Powershot on my iMac running 10.6.8?

I recently took approximately 300 pictures with a Canon Powershot camera during a 2 week vacation. During this time frame I put the photos onto my iPad 2 via an adapter and deleted them from my camera's memory card. Upon return my camera and iPad 2 were stolen. Fortunately I had Photo Stream on and the photos were stored in the cloud. I have since replaced the iPad 2 with the latest iPad and have the photos. I am now attempting to load them onto my iMac and am not able to do it. I am assuming because I have a 7-year old iMac running version 10.6.8 of Snow Leopard I will be able to access and properly store my photos. I am correct?