First thanks to everyone who posted suggestions in this post from last year http://www.microskiff.com/cgi-bin/yabb2/YaBB.pl?num=1392674068/0#0 and I got a lot of good information from the KenRockwell.com site. I own an Olympus TG-1 and have been very happy with it for point and shoot applications. Now I want to step up to a DSLR. I plan on taking this camera on my boat in salt water so having something that is durable with wet hands is important to me. I also want a camera with a telephoto so I can take pictures of the birds I see while I am on the water. From the research I have done I want at least 300mm. I also want to do more things where I can manually control aperture and ISO than what I can do on a point-and-shoot. Whatever camera I get I plan to get a pelican case. The cameras that I am looking at are the Canon 5D Mark III and the Olympus OMD-EM1. Both cameras are supposedly splash proof and have magnesium bodies for more durability. One big differences between these two cameras is that the Olympus has a 4-3 (APS) sensor and the Canon has a full frame sensor. The APS sensor when you use it with a zoom appears from what I read gives you a multiplier effect. So if you are using a 150mm lens and the APS sensor has a 2x multiplier it can effectively turn it into a 300mm lens for more reach. Where if you use a full frame if you use a 150mm you get 150mm. The downside to the smaller sensor on the Olympus is that you don't get as much detail if you crop and can get more noise. I am cheap and I tend to keep my gear for a long time and will pay more to get the equipment I need or put another way I am not wanting to waste money but if I need to spend the money to get a "tool" to get the job done I will do it. So with that said does anyone have any real life experience with these two cameras that they can give me some insight on. I am not against Nikon either just from the research I have done it seems like more outdoor photographers lately have been using Canon for some reason. The Nikon that I have seen recommended is the D7100 so if anyone has any suggestions on that I would appreciate it too. I am starting from scratch so I don't have any existing lenses so brand does not matter. Thanks in advance!