12-27-2015, 08:38 AM
Roger's take always was and is that a rubber ring round the mount is not a seal. I understand that and am using my Sigmas in most available weather conditions anyway 
However, so far I had one situation I would have been happy for this rubber ring. Shooting stars at night and standing close the harbour entrance of Porthgain one particular cocky wave splashed me from top :o I shielded the camera as fast as possible, but after that there were 2 or 3 tiny water drops on the mount - not inside the camera. If someone thinks, this is proof enough for the need of that rubber cover, I can give him the coordinates of the harbour. At full moon and with some wind it should be possible to get such a wave ^_^ The only weatherproof camera system I know of are Olympus and some Pentax lens/body combinations.
However, so far I had one situation I would have been happy for this rubber ring. Shooting stars at night and standing close the harbour entrance of Porthgain one particular cocky wave splashed me from top :o I shielded the camera as fast as possible, but after that there were 2 or 3 tiny water drops on the mount - not inside the camera. If someone thinks, this is proof enough for the need of that rubber cover, I can give him the coordinates of the harbour. At full moon and with some wind it should be possible to get such a wave ^_^ The only weatherproof camera system I know of are Olympus and some Pentax lens/body combinations.