Here we are comparing ZS1 and S1, two Compact cameras from Panasonic and Pentax. Panasonic Lumix DMC-ZS1 is a Small Sensor Superzoom class camera and Pentax Optio S1 is a Small Sensor Compact class camera.
Panasonic ZS1 was introduced to market in May 2009 and Pentax S1 was launched in March 2011. There is 22 months difference between ZS1 and S1 so we don't expect to see a huge technology difference between these two cameras but it would still give an advantage to younger S1, especially in sensor tech.
Here is a brief look at the main features of Panasonic ZS1 and Pentax S1 before getting into our more detailed comparison.
Let's read on the following sections in order to better understand in detail how Panasonic ZS1 and Pentax S1 compares and hopefully end up with enough arguments to decide which one is better for you.