The Holga Digital like the film Holga’s has very few functions availble for use.
You can choose between a 35mm or 120 option and other than that you can pick between colour and black and white. There is no zone focusing and it does not docus well to anything close up.
You can add an external flash to the hotshoe if you wish, I have a Holga flash and it takes a short while to warm up, but, it does help. This camera has a tripod mount on the bottom of the camera, which is useful and it is chanrged by micro usb. There is a viewfinder but it is really more of an indication that an actual reflection of your composition. You need to keep paralax considerations in mind when using this little Holga.
I have included some examples from this camera below for infomation purposes.
Gallagher Photography 