Like most of the other cameras in the Mavica line, the MVC-FD90 uses floppy disks to store photos. At maximum image quality, five images fit on one floppy. At the other end of the spectrum is the e-mail setting, which captures 80 images at 320 x 240 resolution on a single disk. To address concerns about the limited number of photos one can store on a low-capacity floppy disk, Sony has devised a high-capacity solution: the camera will accept the MSAC-FD2M floppy adapter, a device that looks like a floppy disk. Sony's Memory Stick (available in capacities up to 64 MB) slides into the adapter, and the adapter slides into the camera's floppy drive, essentially giving you a 64 MB floppy disk.

The package includes a rechargeable lithium-ion battery, a battery charger, a shoulder belt, AV cable, and ArcSoft PhotoStudio software for Windows.