What are the pros and cons of the hard plastic focus ring on the Canon EF 50mm f/1.8 STM lens

Pros

1. Lightweight: The plastic construction contributes to the overall lightweight nature of the lens, making it easy to carry and handle, especially for extended periods.

2. Cost-Effective: Using plastic helps keep the production costs low, which is reflected in the lens's affordable price point. This makes it accessible for many photographers, especially beginners.

3. Smooth Operation: The focus ring is noted for its smooth turning and decent drag, allowing for more controlled manual focusing. This is an improvement over previous models, providing a more pleasant user experience[1][3].

4. Matte Finish: The matte black surface finish not only enhances the aesthetic appeal but also helps reduce reflections, making it more discreet during shooting[1].

Cons

1. Durability Concerns: Hard plastic is generally less durable than metal. Over time, the focus ring may wear down, especially with frequent mounting and dismounting of the lens, potentially leading to alignment issues[1][4].

2. Limited Tactile Feedback: The focus ring's hard plastic surface may provide less tactile feedback compared to rubberized rings, making it harder to manipulate, especially in cold or wet conditions[1][2].

3. Focus by Wire Limitations: The electronic focus mechanism means that the focus ring does not have a direct mechanical connection to the lens elements. This can result in a lag between input and focus adjustment, which some users may find frustrating[3][4].

4. Less Premium Feel: Some users perceive the plastic focus ring as less premium compared to metal alternatives, contributing to a "cheap" feel, which might not align with expectations for higher-end lenses[2][3].

In summary, while the hard plastic focus ring on the Canon EF 50mm f/1.8 STM lens contributes to its lightweight and cost-effective design, it also raises concerns regarding durability, tactile feedback, and overall user experience.