Sony A mount / Minolta on Astro Essentials M48 adapter compared to newer Sony and older Minolta kit

Comparing Sony A mount (i.e. also Minolta AF) on lenses and adapters
- Sony F1.4 50mm SAL50F14 (2017)
- Minolta 35-105 F3.5-4.5N (1989)
- Konica Minolta 17-35 f2.8 (2007)
- Minolta 80-200 f2.8 (1993)
- Minolta T2 adapter (2004) - used for Astrophotography
- Astro Essentials M48 adapter (2020) - used for Astrophotography
Astro Essentials M48 doesn't lock or stop, causing damage.
In the video I say M42 adapter; this is incorrect: it's an M48 adapter.
Just for the record on adapter thread sizing:
- T2 is a 42mm diameter with 0.75mm pitch.
- M42 is 42mm diameter with 1mm pitch.
- M48 is 48mm diameter with 1mm pitch.