You are absolutely correct, I should have been more precise. I was assuming the original poster was referring to the most common (dial sight) sight found on British and British Commonwealth guns. The Turks in particular (and very possibly other countries) did use panoramic sights.+1. "The Vickers sights are NOT panoramic, they are lensatic. They are used for indirect fire, you cannot look through them and sight an object optically."
The below pic shows the Vickers being used in an indirect fore role.
View attachment 14924
There is one exception to this. The Turks fitted the ZF12 sight to their Vickers for direct fire.