Konica KD-200Z Camera
Linux USB-Storage Driver
To get be able to mount the camera's memory as a filesystem,
you have to patch the usb-storage implementation of Linux 2.4.18, 2.4.19 or 2.4.20, because Konica's USB implementation isn't quite clean.
Starting with Linux 2.4.21, the patch is already included and there is no need to patch the kernel sources. (SuSE 8.2 also includes this patch.) Linux 2.6 doesn't need that patch at all.
The patch will also work with the Minolta DiMAGE E-203 which seems to be exactly the same USB hardware (same vendor and product id) in a different case.
No patch in necessary for the Konica KD-400Z.
Konica/Minolta patch for Linux 2.4.18, 2.4.19 or 2.4.20: 
Apply the patch to the kernel source and recompile it with "USB Mass Storage support" enabled as module (CONFIG_USB_STORAGE=m).
To mount the camera:
modprobe usb-storage mount -tvfat /dev/sda1 /mnt
The device name will change if you have other SCSI devices.
If you still have trouble, you can check if you are using the patched module:
strings usb-storage.o | grep "KD-200Z"
If it finds that string, the module is patched.
Hint:If you are having trouble reading new SD or MMC cards, that have been freshly formated by the camera (happens rarely), try reading them with Windows and delete an image to have Windows write to the media. After that Linux can mount the filesystem, too.
Links
Some photos I took with the Konica KD-200Z: Old Buildings in New York City.