Panasonic Lumix DMC-FZ200 User Manual page 163

Circular polarising filters are most useful for darkening skies as well.
Without a polarising filter.
The filter can be screwed directly onto the camera lens. Watch out for
the thickness of some of these filters. Some of the thicker ones have
more metal around the filter glass and may cause vignetting to occur at
wide angle settings.
The second most useful filter, especially if you photograph a lot of
landscapes is the "graduated neutral density" filter. This filter is normally
supplied on a 100mm square clear acrylic plastic sheet and consists of a
half coated surface of a neutral dye.
The intersection between the neutral density part and the clear part of
the filter is not a distinct line but "graduated" so that a hard line is not
recorded on the camera image
Neutral Graduated
The filter holder uses a 52mm adaptor ring to attach it to the lens. Most
allow 2 or 3 filters to be "stacked" together to achieve multiple affects.
They are not as robust as glass filter systems so care must be taken not
to scratch the surface of the acrylic sheet. They do however provide a
very cost effective way of enjoying the effects created by using these
Filter Holder System
With a polarising filter attached.
Full ND
The 100mm square
filter system.
Holder and the coated,
or dyed, acrylic sheets.
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