It will not be a mechanical switch - but a button on the camera - like a key symbol.
You have probably inadvertently pressed it at some time.
Check your manual re this device and how to 'Unlock'
This thread is now locked and can not be replied to.
Best phone camera 2016/2017: Galaxy S7 vs iPhone 7 vs Google Pixel vs HTC 10 Evo vs OnePlus 3T vs…
1995-2015: How technology has changed the world in 20 years
These are the Best Christmas Ads and Studio Projects of 2016
Super Mario Run preview | Hands-on first impressions of Super Mario Run: Mario's iPhone & iPad…
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.