In camera specifications, what does the last letter "S" indicate?

In camera specifications, the last letter "S" typically indicates stainless steel construction. Cameras designed with stainless steel components are recognized for their enhanced durability and resistance to corrosion. This construction is particularly beneficial in environments where the camera might be exposed to harsh weather conditions or potentially damaging materials. By using stainless steel, manufacturers can enhance the longevity of the camera while maintaining a robust performance even in challenging settings.

The other options do not generally align with the common interpretation of the "S" designation in camera specifications, as they refer to other specific features or benefits that are not associated with stainless steel construction.