If you’re wondering how Sanyo can cram an 8-megapixel sensor into this new VPC-C4 camera, I can tell you: cheating. It’s really just a 4-megapixel unit which can use interpolation to upscale the resolution of the shots. That’s a not a bad thing, really, but it will provide results far different than those from a true 8-megapixel camera.
The VPC-C4 shares the form factor and much of the feature set of its predecessor, the Fisher FVD-C1 and other Xacti models, although it is improved in almost every way. It still uses just an SD card for storage, for better and for worse.
https://gizmodo.com/review-of-fishers-cameracorder-8639
SANYO VPC-C4 DIGITAL MEDIA CAMERA [LivingRoom]