This macro lens have:
-Front Filter size : 49mm
-Mounting thread : 43mm
according to
http://www.raynox.co.jp/english/vide...dex.htm#dcr150
Can somebody explain me, why does Raynox asking for additional RA5243A adapter ring in order to work properly with HV20?
Raynox writes:
It is necessary to mount RA5243A adapter ring (sold separately from us) when mounting the lens on the Canon HV20.
If lens have 43mm at mounting side, and HV20 have 43mm mounting thread, why i can't screw first to the second without RA5243A? Its seems there is some optical trick there?


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