Yes, there was one. My father's friend has one. I don't fully recall the details at the moment but I think it was either 105mm or 135mm with an iris in the viewing lens.
EDIT: A quick search shows that it was the 105mm DS (double stop?).
I sold a Hasselblad system and bought a Rolleiflex 2.8f. I have yet to regret the decision. I find myself taking my camera out more, which has resulted in less missed shots. It is a lot of fun to use.
No, not me. I have both a Rolleiflex 2.8F and a Hasselblad with a 50, 80 and 150, and I have to admit that the former sits on a shelf (thinking of selling actually since I never use it!). The hassey is a much more useful and versatile camera for my purposes. I could never quite get used to the TLR.
I have not exactly abandoned my Hasselblad 501c "system". I have the 80mm and 50mm lenses, 3 A12 film backs, and the Kiev eye level finder. However 90% of the time when I want to shoot square I reach for my well worn Rollei 2.8E. Loading, composing and shooting with the Rollei is simplicity itself.
The 10% of time is when I need the 50mm Distagon on the Hasselblad. But loading those A12 filmbacks, pulling the darkslide etc. can be a royal pain.
I had a Rollei and a Mamiya TLR for a while. Honestly, they never did anything for me and they sat on the shelf. Ended up going getting rid of both of them and then upgrading my Hassy and Mamiya 7 kits. For me, both of them to be a lot more versatile and user friendly than any TLR..
Honestly, it all boils down to what works best for you.
I have always been on an extremely limited budget and all my Rolleiflexes have been stop gaps or stepping stones to another better one later when I have some money to spend on one. Luckily every Rolleiflex I ever sold, I sold for a profit. Now I have the best, the top of the heap in 80mm. A late 2.8F and a new 2.8FX. I keep a Pentax 67 around for the wide angle and the telephoto, but I am starting to wonder if I would be happier if I sold my Pentax 67 and lenses and acquired either a Rolleiwide or a Tele Rollei. The Tele would make more sense in the way my vision works, but a wide is more logical in terms of capability since you can crop the 80mm image to a tele proportion but there is no cropping that will turn a normal into a wide. I think the Tele would win out due largely to Sanders' image quality.
Dennis
Not at all, I like my Rolleiflex alot, but I just use it for handheld photography, my favourite is my Hasselblad system, I like to have alot of possibilities at my disposal (Optics, magazines, finders, etc etc etc), and sorry Rollei lovers, Rolleis are limited cameras in that sense.