Here we are comparing two cameras with different body types: Olympus TG-4, which was introduced in April 2015 is a Waterproof camera with a 16.0MP 1/2.3-inch sensor whereas Nikon P7800, which was introduced in November 2013 is a Small Sensor Compact camera with a 12.0MP 1/1.7-inch sensor. There is 17 months difference between TG-4 and P7800 so we don't expect to see a huge technology difference between these two cameras but it would still give an advantage to younger TG-4, especially in sensor tech.
Fortunately, you can't go wrong with any of these cameras as we rank them amongst Top 10 cameras in their classes. Olympus TG-4 is ranked #3
out of 75 Waterproof cameras with an overall score of 58 whereas Nikon P7800 is ranked #1
out of 262 Small Sensor Compact cameras with an overall score of 65.
Here is a brief look at the main features of Olympus TG-4 and Nikon P7800 before getting into our more detailed comparison.
Let's read on the following sections in order to better understand in detail how Olympus TG-4 and Nikon P7800 compares and hopefully end up with enough arguments to decide which one is better for you.