yeah it does look more restrictive but thats the point right?
A filter that doesnt do its job then why would you have it installed the first place?
the holes on the original is approx. 1mm in diameter each
so actually it actually does very limited filtering
I am very satisfied with the Demciflex filters on my O11D as only the finest dust particles escape
I havent order the full Demciflex bundle for O11 Air as two of the filters are not necessary for O11D
Total price is cheaper ordering the filters individually and the shipping cost is less expensive (half price as I recorded) than having 2 more redundant filters
Take note Demcifex ships the filters from South Africa instead of USA even they charge in USD
btw, you mentioned "another" HKer
Are you from HK as well or just that you managed to know someone from HK here on OCUK?