Vivitar's budget 4MP CCD digicam — fixed 7.7mm f/3.5 lens, 1.5in LCD, SD to 512MB, AA power, AVI clips.
The Vivitar ViviCam 4100 was a budget 4-megapixel compact from the mid-2000s, when the Vivitar name was being applied to low-cost far-eastern digicams sold through supermarkets and discount chains. It sat in the middle of the sprawling ViviCam number range alongside models such as the 3720 and 5018, competing purely on price against the majors' entry compacts.
It uses a 4.0-megapixel CCD delivering images up to 2304x1728 pixels through a fixed 7.7mm f/3.5 lens, with 2x digital zoom but no optical zoom. A 1.5-inch colour LCD serves for framing and review, 16MB of internal memory is built in, and an SD card slot accepts cards up to 512MB. It records JPEG stills and AVI video clips, has a built-in flash with red-eye reduction, and runs on two AA batteries.
As a user camera it is a simple daylight snapshooter: the fixed lens and small screen keep expectations modest, but the CCD sensor gives the punchy colour that draws Y2K-digicam buyers to this class. AA power is a practical plus, needing no hunt for an obsolete charger. It suits students and casual buyers after a cheap CCD compact rather than anyone needing zoom or low-light ability.
Check it powers up on fresh AAs without corrosion in the battery bay, that the flash charges, and that it writes to an SD card, remembering the 512MB card ceiling means modern high-capacity SD and SDHC cards will not work; small-capacity cards must be sourced. Screen scratches are common on these unprotected LCDs. Untested examples are cheap enough that working, tested ones are worth the small premium.