This sale is for a really excellent condition and super rare Mamiya 645 24mm f4.0 fisheye lens. You will not find another one of these in a hurry!
This lens has minimal signs of use, just slight paint loss on the back edge of the front section, and comes with both caps and a nice leather storage pouch. Optically there is haze on the LB-A (81C) cloudy weather filter but otherwise everything is optically perfect, including the 1B skylight, yellow and orange filters. The optics have no scratches, dust, haze, fungus, or separation as far as I can see – all in perfect condition apart from the LB-A filter.
This lens has a 180 degree angle of view on a 645 film frame or 645 format sensor in a digital back; smaller digital back sensors will not give the full 180 degree view. The instruction sheet can be downloaded from the Downloads section if you want to know more. At the time of listing (1 July 2022), I can see just four of these lenses listed worldwide :
Cambridgeworld.com USA $1958.95 (condition not stated)
eBay USA # 185467065501 : opening bid $2499, BIN $3999
eBay Japan # 144607248777 : BIN $4999.99
eBay Germany # 304535876510 : BIN €3500
and that’s all. Shipping (and import duty!) extra. Good luck with finding another one! International shipping by courier; ask about other options as I may be able to deliver it in person within Europe.