Good rule of thumb highdesertwine.
Similarly, unfined/filtered pinot can often be very cloudy. Bass Phillip is a Victorian pinot producer, considered one of the best wineries in Australia for the variety, and some of his pinots are almost opaque they have so much sediment. Cheaper pinots all tend to be fined/filtered, so should appear clear. Any cloudiness in these wines likely represents bacterial spoilage, though this is a rare problem with modern winemaking practices.
Wine tastes better upside down.