Maybe you will have the widest angle 6圆 lens of any available.Īs a 163 degree fisheye, it won't be quite as wide diagonally as the 180 degree Zeiss, Kiev and Bronica 6圆 fisheyes. So a slightly oversized 6圆 square format would be perfect for this lens (61圆1 mm rather than the usual 56x56 mm). A 59mm circle just fits inside the 61mm width of rollfilm, although at its widest point, the image might just overlap with the film edge markings. True, but I think that Mike's idea is to make a circular fisheye (the strong barrel distortion in Mike's final photo shows that it's a fisheye), not a full-frame one which hits the format corners diagonally. I believe the minimum Image circle for 6圆 coverage would be 80mm diameter. I do not believe an Image circle of 59mm will fully cover 6圆. The 75mm tube actually houses various lens elements so it's more than just a spacer - Im half tempted to disassemble it to play around with the flange distance but I probably wont as I've ruined quite a few lenses by 'experimenting' and I think I'd be shot if I ruined this one. I'll look into the Pentax Mamiya route - I'd forgotten about the Pentax 6x7 body etc, I'll avoid the Hasselblads as just typing the word makes me sweat.Īs you've guessed there is no fall off in the light, If you place a light meter behind the lens you actually get a 2 stop higher reading than from in front of the lens, it's almost like a torch. The flange distance appears to be 20-23mm - I get different measurements every time I try, the trouble is it is very heavy (38lbs including the flight case and 21lbs without) and almost impossible to measure when one hand is needed to hold one end up. The serial number says 0007 so there are at least another 6 out there too. I dread to think what it would have originally cost too, the glass is utterly exquisite and flawless and heaven knows how difficult it would have been to find a block of lens grade glass big enough just to make the front element. That way you leave this interesting find intact, and maybe you will have the widest angle 6圆 lens of any Axel That said, I wouldn't hack up the back body of the lens to put in some sort of 3rd party leaf shutter, but would look at the possibility of have a mount made (or otherwise adapting) the lens as it is to a focal plane shutter type MF film or digital backed body, like a Hasselblad focal plane shutter body (2000 series?) or a similar other focal plane shutter 6圆 body. I would try to find out whether the design was from Leitz-Leica, or internal to Hughes. Walter Mandler, chief optical scientist/manager at Leitz, later Leica (corporate and name change sometime in the 1980s), was said to have been somewhat bored with camera lens designs (he made some of the most notable and advanced Leica camera lenses of the 1970s to late 1980s period) and more interested in the higher challenges of the non-consumer optics. 70 pounds (a little over a hundred dollars)! I would probably consider it first as a great collectible (for yourself or to be trade to another) and research the link of Leitz and Hughes, which was no doubt what ius the present Raytheon factory that still operates at the Leitz site (from its 1950s indoor hockey rink beginnings) in Midland, Ontario, and makes military optics based on some former Leitz designs.ĭr. So my question is if you were building a camera for this lens where would you start?Īlso in case you are wondering why anybody would go to all of that trouble just for a lens - I can't really begin to tell you how giddy i get looking through it, the images the lens produces really are jaw droppingly fantastically sharp and beautiful. Whatever shutter/diaphragm arrangement that could be dropped in would have to be fairly huge with an opening of at least 60mm. I don't know if you can see from the pictures but the rearmost tube is 75mm, and the preceeding one is 100mm. The alternative would be to open the lens case and machine a facility to drop in a large diaphragm/shutter from another lens. My problem is I need to find a shutter system (preferably with a diaphragm built in) that will fit between the back of the lens and the focal plane, also the shutter will probably have to incorporate a removable roll film back. There is no shutter or diaphragm with the lens. The lens produces a focussed Image circle of 59mm when focussed on ground glass and focus falls approximately 22mm behind the rear flange surface and 25mm behind the rear element. T* coated lens which is fixed focus, has a focal length of 17mm, f0.6, it has an field of view of 163 degrees, (which supposedly exactly matches the human eye).Īs far as I can tell everything from the surface of the lens to infinity is in focus. The lens is believed to be a 1997 Leitz made Military spec. I have acquired the lens pictured above and would like to build a 6圆 camera system around it and I'm looking for ideas.
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