Last year I upgraded my camera from a Canon T2i DSLR to a Sony a7III mirrorless. Of course, changing brands meant I had to start collecting lenses all over again. So to start I purchased a few prime lenses (18, 55, 90mm). And I gotta admit, these guys are sharp and fast, and Sony is rightfully proud of them. After using them for a year, however, I really began to miss my old zoom lenses.
Now, the neat thing about the new mirrorless cameras is that they have a shorter focal distance due to the big mirror assembly being removed. This allows you to use old lenses with an adapter on your camera. Furthermore, Goodwill sells old camera lenses in lots of 2-10 for $10-$30 per lot (you bid on them like eBay). So I spent about $60 and bought a couple lots of old Minolta mount lenses. Most were in bad shape, but I took them apart and cleaned each lens element and reassembled. Some cleaned up really well, others could not be salvaged. In the end I wound up with 4 zoom and 3 prime lenses that were usable. That's less than $10 / lens! And, you have to be comfortable shooting in full manual mode.
Some of the above pictures were taken with these lenses, and being bored this week I walked around the backyard and took a few snaps for fun. Last week's discussion on PhotoShop got me interested in alternatives, so I did a little research. These were all edited with a freeware called PhotoScape X. These were taken with the telephoto zooms.