These camera backs are generally expensive by consumer standards (US00 and up) and are primarily built to be attached on medium- and large-format cameras used by professional photographers.
Two sensor back types are commonly used: single shot back (non-scanning) and scan back.
This means that almost everything is interchangeable: lens, prism/finder, cranking knob, and film back. The square 6x6 format (56mm x 56mm) on medium format film makes the most of the image circle from smaller lens, means that you do not have to turn the camera sideways for portrait photographs, and allows for cropping flexibility later on.
It also allows for 12 shots on a standard 120 roll; or 16 on a 120 roll using a 6x4.5 format back.
by Karen Nakamura The Hasselblad 500 series is a very successful line of single-lens reflex medium format cameras made by the Hasselbald Corporation of Sweden, using German-made Carl Zeiss lenses with built-in leaf shutters.
The 500 series is renowned for its excellent optics, sturdiness, reliability, and compact size.
If you remove the lens from the body and look inside the back mount on the rear baffling near the rear optic you should see a small three or four digit code stamped in red ink.
Modern high resolution backs that push the limits of data storage and transfer technology still are able to make use of a tethered configuration to offload gigabytes of data to cheaper external storage mediums such as hard drives, instead of the more expensive integrated flash memory.
Non-scanning backs have a sensor similar to that used in most other digital cameras, a square or rectangular array of pixels.
To find the serial number for both, simply remove the back from the body and you’ll see the serial numbers on the inner faces of each piece of equipment. VH for Victor Hasselblad.) Each letter in this ten digit code represents a number between zero and nine.
The cool thing about these numbers is that Victor Hasselblad implemented a secret code (less secret now than it was) that identified the year a camera was made. V = 1 H = 2 P = 3 I = 4 C = 5 T = 6 U = 7 R = 8 E = 9 S = 0 Now all you have to do is take the two letters in your serial number and translate them into numbers.