Sony A mount
Minolta's 1985 autofocus mount, bought by Sony in 2006 and quietly ended around 2021. The mount never changed electrically, so forty years of Minolta AF glass autofocuses natively on the last bodies — and because Sony rebadged much of that Minolta line as its own, the same optics often sell for half as much under the older name. Worth knowing before you buy: Sony sold one camera under three naming schemes (DSLR-A700, SLT-A77, ILCA-77M2), and US listings use all three.
31 bodies and 58 lenses tracked. Lowest used prices pulled daily from the major used-gear sites.
Translucent mirror (SLT / ILCA)
10 modelsA fixed semi-silvered mirror feeding a phase-detect module full time, so the camera keeps focusing while it shoots. It costs about a third of a stop and it was years ahead of mirrorless autofocus. The a77 II and a68 were the last two A-mount bodies Sony made.
Full frame
4 modelsThe four full-frame A-mount bodies. The a99 II in 2016 was the last, and it is still a capable 42MP camera that takes very cheap lenses.
APS-C DSLRs (2004-2011)
17 modelsThe conventional moving-mirror bodies, starting with the two Konica Minolta Maxxums that predate Sony's involvement. These are the cheapest route into the mount and the A580 was the last of them.