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 ( see review )
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: 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.
Excerpt: Le Nikon S570 est un compact d'entrée de gamme assez fin et élégant qui propose un rapport qualité - prix intéressant puisqu'il propose une optique x5 équivalente à 28-140mm , qui offrira donc une position grand angle agréable.