50i frame rate? I am confused :(

[PhilippeArt]

Hi fox,

If I'm not wrong, the difference between the 1080p and 1080i notation is:

• 1080p is the capability of storing the full 1920×1080 dots at every frame.
• 1080i is the capability of storing half of the 1920×1080 dots at every frame, the first frame store all the odd horizontal dots and second frame store all the even dots.

OK, but now, the DMC-FZ100 Specifications says:

"1920 x 1080 60i (NTSC) / 50i (PAL) Full-HD Movie in AVCHD Format". Now I am relay confused.

What it mean? Is it actually a 1080p 30p/25p?, What is 60i/50i?, how and when it is used?

Please, can someone clarified it, for all the beginners like me?

Philippe.