Far-reaching: Panasonic Lumix DMC-ZS100 / TZ100 hands-on preview
ZS100 / TZ100 Lens
The ZS100 has a 10X zoom, offering a 25-250mm equivalent reach - just enough range to classify it as a proper superzoom. And, in all honesty, probably enough for most applications for many people: we suspect the push beyond 80x zooms has as much to do with being able to boast a bigger number on the store shelves than because contemporary consumers find themselves needing so much more zoom than they used to.
The ZS100's lens starts out as a very respectable F2.8 maximum aperture but very quickly slides towards the F5.9 that you're limited to at full zoom. By 50mm equivalent it's already dropped to F4 (F11 equiv., given the crop factor), and it's at F5.1 (F13.9 equiv.) by the time you get to 100mm equivalent - this isn't about to offer you shallow depth-of-field portraits. The camera does use Panasonic's Depth-from-Defocus system that interprets subject distances based on an understanding of its lens characteristics - we've found this system to support surprisingly effective at subject tracking on previous cameras.