I just bought a Desmond DBA-1 Clamp for my 498RC2 that accepts both standard Manfrotto RC2 plates and Swiss-Arca type plates: http://www.scvphotoideas.com …manfrotto-arca-clamp.html
I like the idea of being able to use two different style plates on one clamp and it only costs about $30 on ebay: http://www.ebay.ca ….l2736&_nkw=Desmond+DBA-1
The clamp is well made and both the RC2 and Swiss Arca plates fit very securely.
Bottom of Desmond DBA-1 with "Normal" anti-rotation cutouts that fit most ballhead stems
The only minor problem is that Manfrotto has reversed orientation the anti-rotation "bosses" on the stem of the 498RC2. The Desmond clamp will still mount securely on the 498RC2 stem, but it would be nice to also have more contact area with the bottom of the clamp and also engage the anti-rotation cut-outs.
Has anyone ever seen some kind of a spacer or adapter that could restore the anti-rotation properties of the ballhead stem or QR clamp?
I would need something like this to fit between the clamp and the stem.
Manfrotto 498RC2 with "reversed" anti-rotation cutouts