JMC Posted January 15, 2021 Share Posted January 15, 2021 Finalized: Work in progress.Last Update:Note: Additional information or links about this lens are welcomed and will be incorporated into the first post as time permits. Carl Zeiss 105mm f/4.3 UV Sonnar Manufacturer: Carl Zeiss / HasselbladDesignation/Label: Carl Zeiss UV-Sonnar 4.3/105 (Serial number)Currently Manufactured: No (?) Lens Type: prime/telephotoDesign: 7 elements in 7 groups, sonnar, elements are silica (quartz) and calcium fluoride, probably uncoatedFocal Length: 105mm nominal (107.5mm according to product literature)Aperture Range: f/4.3 - f/32, 5 blades Magnification: ?Macro: Not a macro lens, but can be used with extension tubesWorking Distance: 1.8m - ∞Format Coverage: designed for medium format (6x6cm). Negative size 56.5 x 56.5mm according to product literature Mount: Hasselblad V mountHelicoid: Not requiredFlange Focal Distance (FFD): 74.9 mmFront Filter: B50 or B60 depending on model (C or CF version). Can be adapted to take 52mm filters or others. Introduction Year: ?Serial Number: ? Photos of Lens TBD Transmittance Summary Product data sheet quotes the spectral range for the lens as being 215-700nm, but does not give a transmission curve. Transmission beyond 700nm will take place, however this is likely beyond the range it is designed for in terms of minimizing and refocusing. Spectral Transmission Graph Measured transmission between 280nm and 420nm. As expected based on the design with quartz and calcium fluoride lens elements, transmission between 280nm and 420nm is relatively flat. Photos Made with Lens Original post - https://www.ultravio...dpost__p__23494 Equipment [Canon EOS 7D ACS UV conversion + Zeiss 105mm UV Sonnar + EOS/Hasselblad adapter + EOS 35mm Extension tube, full size and cropped] Ultraviolet Light [f/8 for 1.6s @ISO 400 in Sunlight using ACS in-camera filter] Other example images given here - https://www.ultravio...dpost__p__27482 Additional information The lens has a built in leaf shutter for use on the Hasselblad V mount cameras. Link to the product information brochure: https://www.zeiss.co...ar-43105-en.pdf When advertised for sale, the adverts often say "Super rare, 1 of 73 made". This is not correct. Having spoken with Zeiss, they think around 400 are out there. However their records are not complete. When I contacted them about mine, they discovered it was from a batch that they previously did not have in their digitised records (presumably not all the records have been transfered over from hard copies). Can be adapted for 35mm usage using the relevant Hasselblad V mount adapter. Lens designed for NASA - mentioned in the Apollo 16 equipment inventory (https://history.nasa...photoequip.html). The Apollo 16 image atlas lists 83 UV images here, presumably taken with the 105mm UV Sonnar (https://www.lpi.usra...0mm/mission/?16). Also used at Los Alamos for UV imaging of hydrogen flames (https://permalink.la...t/LA-UR-88-1121). There is adequate space behind the lens for rear mounting a filter if required, especially if being mounted on a 35mm camera or equivalent. Anecdotally, based on my experience, it is not as sharp as the Rayfact 105mm UV lens, but is by no means a soft lens. Link to comment
Andrea B. Posted January 15, 2021 Share Posted January 15, 2021 Thank you, Jonathan. Question: the shortest working distance is 1.8 m which is about 6 feet? That seems long for a 105 mm focal length?? Link to comment
JMC Posted January 16, 2021 Author Share Posted January 16, 2021 Thank you, Jonathan. Question: the shortest working distance is 1.8 m which is about 6 feet? That seems long for a 105 mm focal length??Yes, it certainly isn't close focusing lens by design. Given the close associating with NASA during the design phase, I guess they were more interested in infinity behaviour than macro with it. But I as found, it works fine with extension tubes, although that does make the whole setup very front heavy. Link to comment
lukaszgryglicki Posted November 28, 2023 Share Posted November 28, 2023 Anybody knows what is the price for this when it appears on sale? EDIT: nevermind, found some references for about $42k - yyyyyy - I give up. Link to comment
lukaszgryglicki Posted December 17, 2023 Share Posted December 17, 2023 Actually, I'm now looking for one of those... anybody has ANY links? Does anybody her have such a lens (maybe for sale)? Link to comment
colinbm Posted December 17, 2023 Share Posted December 17, 2023 @lukaszgryglicki What will the Carl Zeiss UV-Sonnar 4.3/105 give you that the UV Nikkor 105 f4.5 hasn't got ? Link to comment
lukaszgryglicki Posted December 18, 2023 Share Posted December 18, 2023 Well -it has 2x bigger image circle and its price only goes up, so it's also a good investment imho. Link to comment
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