I was looking for a way to elevate my GoPro Hero 4K footage and capture more cinematic shots, especially in bright outdoor conditions. I got this K&F Concept ND Filter Kit, and it has made a noticeable difference in my videos. These filters are perfect for reducing glare, balancing exposure, and adding a professional touch to my recordings.

Pros:
- The filters are well-made with an all-aluminum body and a secure fit, ensuring they stay in place during use.
- The CPL filter effectively reduces reflections and enhances colors, especially useful for water or snow scenes.
- The ND filters help balance exposure in bright conditions, allowing for smoother motion blur and more cinematic footage.
- Comes with a padded storage case, making it easy to protect and transport the filters.
- Adds versatility to the GoPro Hero 4K, which otherwise has limited manual controls.

Cons:
- The filters are slightly bulkier than the stock lens cover, which might be an issue if using a protective case.
- The CPL filter requires manual adjustment to achieve the desired effect, which can be tricky in fast-paced shooting scenarios.