Tag Archives: 72mm

Sigma Makes Filters Extremely Strong!

SigmaFiltersCracked

SIGMA has released a compelling video showing their new process for ceramic lens filters being compared to other brands in a metallic ball drop test.  The ball weighs 49 grams or 1.7 oz  and it is dropped from a height of four feet.

According to SIGMA, their strengthening ceramic process is 10x or 1000% stronger than previous strengthening methods which are included in the video as the competition to compare them. → Continue Reading Full Post ←