Olympus E-500 - EVOLT Digital Camera Broschüre & Specs - Seite 5

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Olympus E-500 - EVOLT Digital Camera Broschüre & Specs

clean:

"Supersonic Wave Filter" – the unique

dust-protection system from Olympus.

In photography, it's rare to get a

second chance to take the shot. If the

moment is missed, it's gone. The most

captivating picture can be ruined by

the tiniest of dust particles that enter

the camera body during lens changes.

In analogue cameras, dust particles

move with the film as it winds forward

so that in most cases only one single

picture is affected. In digital cameras,

however, dust particles that settle on

the image sensor stay there, accumu-

late over time, and affect every picture.

Merely microscopic particles can cover

several hundred pixels on the CCD.

Attached lens:

avoids dust getting inside

camera body.

That not only spoils pictures but also

requires professional cleaning, which

costs time and money.

The effective solution

for the E-500:

The Supersonic Wave Filter is located

directly in front of the highly sensitive

CCD. Powered by an ultrasonic

generator, it produces vibrations that

shake off the particles of dust. They

then adhere to a specially-coated

membrane inside the camera body

and no longer pose a risk to image

quality. This process takes mere

milliseconds and is executed each

time the camera is turned on or

whenever Pixel Mapping is invoked.

Lens change: dust particles

have landed on the dust filter in front

of the image sensor.

Activation of the Supersonic

Wave Filter: the dust particles

are shaken off.

Shutter

Supersonic

Wave Filter

CCD

Low-pass filter

Clean image sensor:

no dust particle can affect

image quality.