y man blema ka? sigo man kha ang thread? 77mm mana diba? aria lang ko sa IT park basin ato ma testingan kay nice baya ang sigma 12-24 mm hehehehe mohikap sad ko...
hehe.. wala man ni siya filter thread gud... bulging front element man ni... so I have to hand hold the filter lang.. then dili pwede lower than 15mm on FF.
ok ra sad unta to ihandhold, pero naa man reflection musulod from the side.