Summary: The Nikon Coolpix S640 is a very small ultra-compact camera with a stabilized wide-angle lens, offering a 4X range from 28 to 112mm, in 35mm-equivalent terms. Up to relatively recently, there was very little competition in terms of wide-angle ultra-compact digital cameras.
Pros: Very fast autofocus lock, Image noise under control up to ISO 800, Consistent exposure, Natural image colors, Very good white balance, Very responsive except during image storing, Excellent LCD visibility, Great LCD contrast and refresh rate, Good build quality, with reservations (
Cons: Frequent autofocus miss, Useless ISO 3200 and 6400 sensitivities, High purple fringing, Slow shot to shot speed, Pathetic continuous drive, Severe loss of contrast starting at ISO 800, Redeye problems, Battery charges in camera, Poor tripod mount placement
Summary: Although it is a little expensive, the Nikon CoolPix S640 offers a good specification, with a 5x zoom image stabilised lens, superior build quality, fast and easy-to-use operation, excellent low light performance and very good image quality even at higher ISO settings. It's almost a bargain.
Summary: With the S640, Nikon has raised the bar for this type of camera. The additional of a speedy auto-focus and improved image stabilization means better pictures for the average photographer. The ease of use, Smart Portrait mode, and good battery life add to the enjoyment of using the camera.
Summary: With a low-profile design, the compact Nikon Coolpix S640 seems to lend itself to street photography. In fact, it calls to mind the approach of post World War I photographers like Robert Doisneau.
Pros: Fast, Tough and versatile, Easy to use
Cons: Lots of noise at high ISO, No manul exposure, Weak flash
Conclusion: Let’s put it in a simple way: The Nikon Coolpix S640 is your average compact camera which performs, well, just averagely I guess. The camera has a fairly run-of-the-mill feature set: 12 megapixels, 5X optical zoom, 2.7 inch screen, point-and-shoot operation and with nothing in particularly that...
Pros: Acceptable image quality; mostly for shooting in good light, Fairly fast autofocus performance, Good battery life; USB charging enabled, 5X optical zoom lens with optical image stabilization (though see below), Automatic scene selection, many scene modes, elaborate face detection/portrait features
Cons: Edge softness and below average image clarity, Slow lens aperture range at telephoto end, No manual controls; scarce on-screen display details, No HD video recording; optical zoom and optical stabilization unavailable when recording, Slow burst mode and below average writing times
Conclusion: The Nikon Coolpix S640 is a solid offering. It looks good and is very straightforward too. There is plenty of choice when it comes to buying a pocket camera, but this camera is a good choice if you think the features it offers are what you are looking for.
Excerpt: With its 12-megapixel sensor, 5x zoom lens and 2.7in screen, the S640 risks blending in with countless other mid-price compact cameras. Not every compact claims start-up and autofocus performance to rival a digital SLR, though.