Regarding the Swarovski 80 mm STS HD Spotting Scope: what is the difference between the STS and the STM scopes?
Thanks so much for your inquiry.
The now discontinued STM and ATM bodies were made of magnesium. The current ATS and STS scope bodies are made of aluminum. The color of the focus wheel on the ATM/STM is green; they changed that to black in the newer ATS/STS models.
If you have any further questions, please let me know!
All the best,