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LUMIX Digital Camera Know-Hows
Types and Effects of Filters and Lens Hoods
Some filters control light and improve the image while others provide a unique effect or protect the lens from dirt and scratches. A lens hood both blocks unneeded light from entering the lens and controls flare and ghosts.

Controlling Light (ND filter)
This filter limits the amount of light entering the lens. It can, for example, let you use a slow shutter speed even in bright daytime light.
Without filter
Too bright.unable to use a slow shutter speed.
 
With filter
The filter cuts the amount of light, allowing the use of a slow shutter speed.
 
Polarization (Polarizing filter)
Polarizing filters are useful for enhancing colors and making blue skies and green trees look more vivid.
Without filter
 
With filter
 
Cuts unneeded reflected light and glare from the surface of water and glass, to produce clearer images.
Without filter
 
With filter
 
Special Effects (Soft, Cross, Rainbow, Color image)
 
Soft filter
 
Cross filter
 
             
Rainbow filter
 
Color image filter
 
 
Lens Protection Filter (MC, UV, Skylight)
MC (multi-coating) and UV filters are colorless, transparent filters that protect the lens in addition to cutting UV light, and the skylight filter prevents the kind of blue cast that can happen on clear days.
 
Lens Hood Effects (Round, Petal, Square)
Attaching a lens hood prevents unneeded light from entering the lens and controls flare and ghosts. A variety of types are available, but the overall function is the same for each.
Lens Hood Shapes
 
 
Round
The most common type of lens hood, it is most often used with standard and telephoto lenses.
 
Petal
Used mostly with wide-angle lenses, the special petal shape prevents it from intruding in the picture and cutting off part of the image.
 
Square
Used mostly with wideangle lenses, the square corners of this hood prevent it from being seen in the picture.
 
Lens Hood Effects
Without hood
Unneeded light enters the lens, causing flare.
 
With hood
Unneeded light is cut, resulting in a clear image.
 

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