Some time ago I got a bag of Olympus OM lenses. So suring Ebay.de I found a substitute bayonet to convert to Nikon F mount. I will first try it out on a OM 35mm ƒ 2,8. I do not have a 35mm lens for my Nikons, so this can be exciting. The parts should arrive in 4 weeks, so look for an update with pictures later