I have for sale a pair of single-coated Super-W-Komura 75mm f/6.3 lenses in Seikosha shutters. These 8-element lenses have a 93 degree angle of view (presumably at f/22, the material on cameraeccentric doesn't say), so will provide an image circle of 158mm. This is adequate for 4x5 straight on, and is fine for use on the Travelwide.
That's right, the Super-W-Komura 75mm works on the Travelwide with the focusing helical! The lens has a flange focal length of just over 100mm, which means you can achieve infinity focus and still have ~7mm of additional helical travel; close focus should be just over 0.8 meter, about 2-Âľ feet. Note that the camera's distance settings won't be accurate as they're set up for a 90mm lens. The inner part of the helical will slightly vignette in the corners, see the writeup I posted earlier today in the Using and Modifying the Travelwide 4x5 Camera thread on the Large Format Photography Forum.
Both lenses come with their original screw-in metal front and rear caps and retaining ring and are fully functional. The slow speeds are slow on both, but quite comparable, and are repeatable. Using a stopwatch I get a consistent ~1.5 seconds on the 1-second setting. Both have pretty clean glass and only very minor dust, though one (s/n 5530186) has a long cleaning wisp on the rear cell. Their construction is interesting, both the front and rear cells are in two parts that can be unscrewed from each other to expose an internal element. Only the front cell of '186 unscrews easily, while both cells of '108 can be unscrewed.
Both lenses have the same "feature" - I'm unable to remove the front cell from the shutter. I consulted Frank Marshman (Camera Wiz) and he was quite confident that he'd be able to disassemble them at CLA time. There's no issue with unscrewing the rear cells for mounting on a lens board. The barrels show minor signs of wear and use but no dents or dings.
I'd like $225 for s/n 5530108 and $200 for s/n 5530186. These prices include shipping to your door in the US.
Please send me an email, not a PM. You can do that the same way you'd send a PM, just select "Send Email" from the popup menu.
That's right, the Super-W-Komura 75mm works on the Travelwide with the focusing helical! The lens has a flange focal length of just over 100mm, which means you can achieve infinity focus and still have ~7mm of additional helical travel; close focus should be just over 0.8 meter, about 2-Âľ feet. Note that the camera's distance settings won't be accurate as they're set up for a 90mm lens. The inner part of the helical will slightly vignette in the corners, see the writeup I posted earlier today in the Using and Modifying the Travelwide 4x5 Camera thread on the Large Format Photography Forum.
Both lenses come with their original screw-in metal front and rear caps and retaining ring and are fully functional. The slow speeds are slow on both, but quite comparable, and are repeatable. Using a stopwatch I get a consistent ~1.5 seconds on the 1-second setting. Both have pretty clean glass and only very minor dust, though one (s/n 5530186) has a long cleaning wisp on the rear cell. Their construction is interesting, both the front and rear cells are in two parts that can be unscrewed from each other to expose an internal element. Only the front cell of '186 unscrews easily, while both cells of '108 can be unscrewed.
Both lenses have the same "feature" - I'm unable to remove the front cell from the shutter. I consulted Frank Marshman (Camera Wiz) and he was quite confident that he'd be able to disassemble them at CLA time. There's no issue with unscrewing the rear cells for mounting on a lens board. The barrels show minor signs of wear and use but no dents or dings.
I'd like $225 for s/n 5530108 and $200 for s/n 5530186. These prices include shipping to your door in the US.
Please send me an email, not a PM. You can do that the same way you'd send a PM, just select "Send Email" from the popup menu.
