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On Chinese ZWB1, ZWB2, ZWB3 filter problems
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PostPosted: Sat Oct 12, 2019 8:17 am    Post subject: On Chinese ZWB1, ZWB2, ZWB3 filter problems Reply with quote

Bought a few of those cheap Chinese Filters for reflected UV photography, to see if the rumor about their not so good Quality Control (QC) is true..





Well, those two out of eight filters had prominent glass striae ("streaks" commonly called)!

Read more about it here: https://photographyoftheinvisibleworld.blogspot.com/2019/10/on-chinese-zwb1-zwb2-zwb3-filter.html


PostPosted: Sat Oct 12, 2019 10:30 am    Post subject: Reply with quote

thanks for the information. seems like a common problem with chinese filter. i bought 50pcs 3 years ago and about 10 of them had the same problem.