Why have all camera manufactures pretty much abandoned any type of long macro lens offering? This is something that puzzles me and perhaps there's not a big enough market. Having said that, I would gladly pay a premium price for a lens in the 150-300mm range. I had the Nikon 200mm f/4 for several years and absolutely loved that lens. After switching to mirrorless the lens became a Manual focus lens which was fine most of the time. I truly love my 90mm Sony macro lens but wish at times there were a longer offering, even third party. I am assuming there aren't many folks out there that loves macro photography as much as I or there would be more selection. I am all but certain if the big three would produce such a lens, it would sell quite well. I am hoping a company like Sigma or Tamron will beat the manufactures to this sooner than later.