An interesting discussion thus far. At one time I owned a fairly large Hasselblad system, most items were bought in the 70's and 80's so we are talking a while back! I agree with much that has been said. I suspect that shutter efficiency is one of the reasons Zeiss developed the 100mm Planar lens that was optimized for wide-open shooting at infinity, i.e., for aerial photography. As well there is no distortion due to different sides of the frame being exposed at different times (e.g., high shutter speed with FP shutters). In contrast the 80 Planar for SLRs (I have owned both the Hassy and Rollei versions and they behave the same) is quite poor wide open. They need to be set at least to f/5.6, better yet at f/8. Most of the Hassy C lenses needed to be stopped down a bit. Many were best around f/11. As well there is a tiny button below the winding crank on the side of 500C and later related bodies - This triggers the first part of the lens cycle and flips up the mirror. After this, the sound of the Compur shutter and Prontor shutter on later lenses is quite quiet. It is possible this new Hasselblad will be this quiet - we need to wait and see/hear. A quiet camera will be useful for certain shooting scenarios such as inside churches. I saw a top view comparing the new Hasselblad to the new Fuji and other cameras on the net a few days ago but can't seem to be able to find it now - it shows the Hassy as being much thinner than the Fuji. Thus the H might be a good choice for a field camera. Slower lenses could also mean lighter weight lenses...
One of the main disadvantages of the Hasselblad V system is that one was limited to the lenses provided by Hasselblad. The only 3rd party item that I recall was a teleconverter (I did not own this). About the time that the Nikon Ai lenses came out Hasselblad introduced the 2000 series cameras with focal plane shutters. I eventually bought two of them. They were not problem free. I once had to send a camera with a stuck on lens to Hasselblad for repair - it was stuck in the middle of the lens cycle. However, the cool thing was adapting other lenses. For me this included having a Bronica focusing mount for the Nikon super tele lenses modified to mount on a Hasselblad. I had owned the 500mm Tele-Tesssar lens but had a bad experience with it - it broke in two at the shutter while I was on a sailboat shooting a regatta in Puget Sound - not a good time for this to happen! As well the 500 had chromatic aberration that could be seen in a transparency without much magnification. The lens was only f/8. So I was eager to try out alternatives! I was able to find all 4 focal lengths of the Nikon super teles. The barrel of the focusing mount as well as the Hasselblad mount and sides of the body preclude these lenses from covering the full 54 x 54 mm of the format. Just a wee bit of the corners are cut off. No problem for any rectangular crop, however. I sold the 400 and 600mm but still have the 800 and 1200(ED version!) as well has the modified focusing mount and AU-1. It will be interesting to see what gets developed for the new Hassy in the way of lenses and how good they are. I suspect we will see more in the way of lenses from Fuji due to the focal plane shutter and the within company advantage of development and manufacture (i.e., vertical integration).
