Description
Result of 35 years of reseach & development, afm® (activated filter media) is a direct replacement for sand that can be installed in all types of sand filters without modifications.
Manufactured from green and brown glass, afm® is exposed to a unique activation process to become self-sterilizing and acquire superior mechanical & electro-static filtration performance.
Roddy –
Love the lense. It is very sharp. Not very heavy. Fast lense great for night photography and astrophotography
youtubr –
Amazing lens with amazing stabilization. The perfect wideangle lens for handheld vlogging.
Moe9 –
Works well for videos and editing purposes. Highly recommended not for beginners but for professional usage.
Ryan –
A must have lens for YouTubers. 20mm is such a nice focal length to keep a video intimate and relatable YouTubey.
papadtoti –
Nice sharp images. Low distortion. No chromatic aberrations. Silent and fast focusing. Very nice lens.
pottsi2468 –
Excellent lens. Sharp. Great for astro, wide ,landscape ,Portraits etc.
Kathleen –
Love this lens. Works great, sharp, lightweight. Cant wait to use it during my next trip
David –
Gorgeous little gem of a lens, produces spectacularly sharp images. The comparisons to GM lenses are spot on