How does the build quality of the Canon EF 50mm f/1.8 STM hold up in extreme heat

Build Quality

1. Material Composition: The lens features a metal mount, which enhances durability compared to the plastic mount of the previous model. However, the main body of the lens is primarily plastic, which can be more susceptible to heat-related issues[2][4].

2. Heat Sensitivity: High temperatures can lead to malfunctions in the lens. Canon advises against leaving the lens in excessively hot environments, such as a car in direct sunlight, as this can cause damage to internal components[1][2].

3. Condensation Risks: Transitioning the lens from cold to warm environments can cause condensation to develop on the lens surface and inside the lens. To mitigate this, it is recommended to place the lens in an airtight plastic bag before moving it between temperature extremes[1][4].

Overall Performance in Heat

While the EF 50mm f/1.8 STM lens offers decent build quality and some improvements over its predecessor, it does not include weather sealing or specialized materials to withstand extreme heat. Users should exercise caution when using this lens in high-temperature environments to prevent potential malfunctions and ensure longevity. Proper handling and storage practices are essential to maintain its functionality under such conditions.