Conclusion: Letâ€™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 stands out from the sea of other cameras out there. The Coolpix S640 is very compact and sports a rather ordinary design with decent build quality and ergonomics.
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
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. This is no longer the case, putting the S640 face-to-face with more competitors than ever. The Coolpix S640 turned in an average performance for a high-resolution ultra-compact.
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
Excerpt: A high-spec ultra-compact, the Nikon S640 not only boasts a 28-140mm 5x zoom lens, 12.2MP and a 2.7in 230k LCD monitor, but it also has lens-shift optical image stabilisation. Our Nikon CoolPix...
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.
A good wide angle lens, adequate megapixels, and good zoom combine to make the Coolpix S640 a camera that does a good job across the board.
Summary: Compact cameras have always been popular (at least in part) because they're unobtrusive and not intimidating to subjects. The inconspicuous little Nikon Coolpix S640 should fit right in - it does a remarkably good job across the board and it's tough enough to go just about anywhere. Auto focus speed is on par with many entry-level DSLRs and the S640 is as fast or faster than any camera in its class.
Pros: Fast, Moderate wide-angle to short telephoto 5x zoom, Tough and versatile, Easy to use
Cons: No optical viewfinder, No manual exposure options, Weak flash
Excerpt: The Nikon CoolPix S640 is a standard, pocket-sized point-and-shoot digital camera. It's an ideal camera for social happy snappers, and its quick start-up time makes it great for when you need to whip a camera out of a pocket or handbag to capture a spur of the moment shot. However, we aren't thrilled with its image quality.