I bought a 55.3mm Meopta iPhone adaptor for my zeiss 20-75x80 diascope. Well, it doesn't fit my eyepiece....too small. Meopta has a 57mm version,but my eyepiece measures 59mm. Does anyone know of a different manufacturer for the iPhone? I am going on an awesome Utah elk hunt and was so excited about taking pics through my spotting scope. Pretty darn disappointed right now