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I bought this Camera in Hong Kong, after realising I would have to haul my huge, DSLR-like Fuji S5500 around to do the whole tourist thing. Being a city that's short on space... I immediately invested in this little number, as I realised that a smaller point and shoot would really get used more than the "pro" camera.
I plumped for the S5 for its size, big screen and that it takes SD cards. It's available in all sorts of metallic colours, I went for siver. I also took my iPod along to HK, as I use it to back up photos when the card runs out. I also bought a 1GB SD card with it, mainly as the bigger the megapixels, the bigger the files... and this is a 6MP model. I spent a whole week, taking occasional short videos as well and happily snapping away, and it didn't fill up until the last day!
The two pleasant suprises I found on this model were the great, iPod-like clickwheel interface, and the muvee function, which makes animated slideshows with music (you can add your own if you have a PC) complete with customisable transitions. Also, the compression of movie files is very good, and spared a lot of memory card space compared to the uncompressed avi on the S5500. Both record VGA at 30fps. SD cards are the cheapest, and there are many interesting options with SD that are not available on other formats.
I was less pleased with the battery life, which is only just adequate for a day's heavy use, and that it doesn't have any kind of image stabilisation, or higher sensitivity sensors like Sony and Fuji use respectively, to counter the shake problem in low light. Also, I find the need to use the dock to plug the camera into USB pretty cumbersome. The case I got with it was for the CoolPix S3, which has a large metal part on the cover, which served to dent my S5 whilst I was being barged on the tube in London, it's quite thin, but it seems pretty strong.
As someone I know owns an Coolpix P2, which has WiFi, I didn't go for the S6, as the WiFi doesn't do much with my setup, despite its slightly bigger screen.
All that said... I think the image quality is only slightly better than average. All the best shots I took were taken with the camera sitting on a flat surface with the timer mode! It's not bad, but it's not brilliant. I think you'd get better photos with a similar Fuji or a Canon, but not other makes.
All in all, it's a great camera that is small enough to carry with you everywhere, so you needn't miss a shot, looks great, and is easy to use.
The stylish wave-surface design of the COOLPIX S5 means it is as easy in the hand as it is on the eye. Conveniently located buttons merge with exterior elegance to place powerful functions at your fingertips. With a generous 6 megapixel resolution, this camera ensures that pictures stay sharp, even when significantly enlarged. Its precision 3x optical Zoom-Nikkor lens puts everything from group portraits to expansive landscapes within easy reach, and Pictmotion lets you capture moments in superb color and detail, then play them back as a slide show in combination with music and special effects. To add to your enjoyment, the high-resolution 2.5-inch LCD monitor simplifies composition and playback. With these cameras you're ready to capture and relive your special moments with anyone, anywhere, anytime.