Casio's 2011 silent-mode travel zoom — 14.1MP 1/2.3in CCD, 24-300mm equiv 12.5x zoom, 720p video, USB charging.
The Casio Exilim EX-ZS100 was a slim travel-zoom compact announced in August 2011 and on sale from that September. Casio promoted it as a 'silent camera', with a mode that suppressed operational noise for museums, churches and concerts, and it sat in the value ZS series of the Exilim range beneath the flagship ZR models.
It packs a 14.1-megapixel 1/2.3-inch CCD behind a 12.5x optical zoom covering a 24-300mm equivalent range, unusually broad for its price class, with a 1cm macro mode at the wide end. Framing and menus run on a 2.7-inch LCD, video records in 720p HD, and an Advanced Easy mode simplifies settings for novices. The battery is a proprietary rechargeable charged over USB, and images store to SD-family cards.
As a used buy it makes a competent pocket travel camera: the 24mm wide end and 300mm reach cover cityscapes to detail shots, and the silent mode remains genuinely useful in quiet venues. CCD colour and daylight results are its strengths; expect soft long-zoom corners, modest high-ISO ability and leisurely operation compared with the sensor-shift-stabilised ZR series.
Check the proprietary battery holds charge and that a USB cable is included, since the camera charges in-body and standalone chargers are uncommon. Run the zoom through its full 12.5x travel listening for grinding and watching for stuck elements, look for lens-barrel dents that jam extension, test 720p recording, and inspect the LCD for pressure marks. Confirm it accepts a modern SDHC card.