The H4X Medium Format DSLR Camera Body with CR123 Battery Grip and HV 90X-II Viewfinder from Hasselblad is available as an upgrade for H1, H2 and H2F cameras. Like its predecessors it is a high-performance medium format camera for professional and advanced users with an image format of 56 x 41.5 mm. It is compatible with CF/CFH backs, numerous third party film and digital backs. Included in this kit is the HV 90x-II viewfinder which is an eye-level viewfinder providing a 2.7x image magnification and diopter adjustment from -4 to +2.5D. It has a built-in flash with Guide Number 12 at ISO 100 and an integrated hot shoe mount. It is optimised for film and the 40.2 x 53.7 mm format.