robinchee said:Just got my 40-49mm step up ring. Yes it works fine and the step up ring can screw in all the way. And my B+W 49mm filter sits perfectly on the step up ring. This also means the thread is for sure not 40.5mm but 40mm. So hopefully one day the 40mm filter will come up. Heard some vendors coming up with 40mm filter this month.
BTW, I got it from eBay and although its advertised for Canon RF, its works perfectly with Fujifilm X10.
http://www.ebay.com/itm/New-40-49mm-Step-Up-Ring-40mm-49mm-40-49-Canon-RF-/200681543626?pt=LH_DefaultDomain_0&hash=item2eb98d57ca#ht_500wt_1064
Since its small, it comes to your postal mail box direct, no need to have someone receive the parcel. Came within 6 days. Pretty good.
Excellent! Thanks for sharing.