I was looking at a new Sony FE Mount manual focus wide angle lens that was also a macro lens that was recently announced by a 3rd party vendor when I had a thought. It sold for about $450 and I wondered if I could spend less diving in to the used on line bins. I did not find one lens that could do both wide angle and macro, but I did find a converter that turned my adapter and existing 50mm Minolta MD 50mm f/1.7 lens in to frankenmacro recently. Now all that was left was a wide angle solution. Enter the Vivitar 19mm f/3.8. After an adjustment for the mount being misidentified by the vendor necessitating my need for a Nikon F adapter instead of Minolta I was in business.
Old timey mint condition #Vivitar 19mm f3.8 lens = $79 @bhphoto
Nikon F to #SonyA7 adapter = $14 @amazon
Aggressively permafusing adapter to lens due to ox gene inherited from my father = free
Good thing the Sony A7 is is the only camera I will be using it on. Here are first test shots from my first hour or so with the lens.: