The reason there are numbers on the insert of film magazines is to insure that the proper insert matches the outer shell. However, if you had two 12, A12 or A24 film backs and interchanged the inserts they would still perform satisfactorily (if they were working properly to begin with.) When you use an insert designed for a 16 or A16 with an outer shell from a 12 or 24 magazine you can anticipate sharpness problems because the narrower (645) pressure plate does not allow the film to lie completely flat. Mismatched inserts, with the above noted exception, will affect nothing but the price. Many of our rental film backs have mismatched inserts--and perform problem free. Busy pros, who have their assistants loading film rapidly will discover mismatched inserts at the end of a shoot. While it may be comforting to know the insert matches, a good buy might be had if the insert and shell numbers weren't the same.

70mm magazines were popular 20-25 years ago. More recently the various space missions used the 70mm magazine using a special thin emulsion film that allowed as many as 200 exposures on a single cassette.) School and wedding photographers often used them. They require a bulk loader and film purchases in 100 foot bulk.

The finder will also fit all previous Hasselblad cameras. Combination of high eyepoint design and built in diopter fine-tuning make the finder ideal for eyeglass users. The three choices of operational mode make the metering system capable of handling all types of lighting conditions.

For additional information we suggest you visit the Hasselblad website.