Zoom 4354 User Manual download pdf (Page 5)

PureView imaging technology.

Purity of detail.

Even digital SLR images have a certain softness. With oversampling, however, images can be noise free,

yet incredibly detailed and dened. Zoom into the 5Mpix images at 100% magnication on your PC

screen, and you’ll see. There’s something beautifully pure about the detail — not enhanced in anyway.

Look closely at some grass… it’s amazing.

Faster shutter speeds.

With the Nokia 808 PureView, you get eective maximum aperture throughout the zoom range.

Whereas with optical zoom, less light tends to reach the sensor as the zoom increases. At maximum

zoom, 5.4x more light reaches the Nokia PureView Pro sensor than a broadly equivalent optical-zoom

digital camera (f/5.6 as opposed to f/2.4). And this means you get the benet of faster shutter speeds.

e.g. If a conventional digital camera set to ISO 100 uses a shutter speed of 1/30th second,

the Nokia 808 PureView uses 1/180th second in the same lighting conditions. Or, looking at

it another way, if a digital camera uses ISO 600 for a shutter speed of 1/30th, the Nokia 808

PureView could maintain the same shutter speed with ISO 100 — signicantly reducing the

visual noise you’d see in the resulting image. This also means that the Nokia 808 PureView’s

eective ash range is virtually maintained at all zoom levels, rather than being signicantly

reduced as the zoom increases.

Goodbye to distortion.

Distortion on all images is negligible. Whereas with optical zoom, images tend to get more distorted

towards the edge of the frame (with bent vertical and horizontal lines) at the top of the zoom range.

Silent zoom.

The zoom function is completely silent — which is really important when shooting video.

Less is more.

The simple structure of Nokia PureView Pro beats more complicated designs hands down. Image

denition is pin sharp, way superior to conventional zoom designs. Conventional designs need many

more lens elements to provide the zoom capability and correct aberrations, but these interfere with

denition and/or light transmission. Our simple structure has enabled a signicant improvement in

manufacturing precision, and our lenses are produced with 10x greater precision than SLR lenses.

This was essential to allow the PureView Pro sensor and optics to work in complete synergy.

Neat and compact.

The size of the Nokia 808 PureView camera (including sensor and optics) is at least 50%-70% smaller

than a conventional optical zoom design.

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Zoom 4354 User Manual Page 5