Helix MagLock™ - Burkard

Overall, well made product. My first mounting ring was warped so it wouldn’t thread properly but the customer service team rushed me a replacement so that was awesome. As far as the performance of the glass, it was good, no image issues, it did help cut glare but I still noticed plenty of spots while shooting nascar in bright light. One downside is due to the mounting rings being oversized your sunshade won’t fit anymore unlike some of the direct thread versions.

Great for indoor with bright lights. It can eliminate a glare reflection and still give you a crisp output all the time.

Incredible quality. Always impressed.