Rating: 
Summary: Great point and shoot with nifty manual settings
Review: Auto photos usually come out requiring no editing at all.
In manual mode, white balance settings are available, as is BBS (camera takes 10 shots and selects best). Flash is quite good for such a small camera. Action shots are great - dial in type of photo you want to take. Easy to carry with you all the time.
Rating:
Summary: a small, useful, and ideal camera
Review: I bought this Nikon 3100 about a month ago. I LOVE it because it's so small and still has 3x optical zoom! The design is just amazing, and i don't think there is any cuter digital camera out there than this one. One problem is that the shutter speed is very slow as other cameras. If you don't use flash, the pictures are too blurry. One way to get away with this is to use the Sports mode, and it works great. It has many different modes such as close up, landscape, portrait, etc, and some of them are really useful. The butteries last for a long time if flash is not being used; however, they only last for a couple of hours if you keep using flash. But, overall, i love it and i'm glad i bought this.
Rating:
Summary: Good product...good value
Review: I decided to buy my first digital camera this summer, and I had narrowed it down to the canon s400 and the nikon 3100. Ultimately, I chose the Nikon because of the price difference, but I've been very satisfied with my choice.
The most common complaint I've heard is the battery life. I've used the camera on 6 or 8 separate occasions, and have filled my 128 mb memory card, and the original battery is still going strong. Just don't leave the camera on when you're not actively taking pictures and you'll be fine (though I'd still recommend keeping some spare NiMH batteries with you).
The scene modes can be useful--I took some great fireworks pictures over the 4th of July with that scene mode, and the backlight mode works well too. However, sometimes you need to take a picture quickly, and then they just get in the way.
The other complaint I've heard is the flash (i.e. the multiple flashes that are annoying and make the camera take too long to take a picture). That problem is easily solved...just turn from red-eye reduction mode to standard flash mode. Then, if you get red-eye, just fix it on your computer.
Which leads me to my one complaint about the camera. The imaging software that came with it was a pain to use, and didn't give great results when you try to edit the photos. I upgraded to Photoshop Elements, and haven't had any problems since.
The size of the camera is perfect...small enough to carry around easily, but big enough to still hold steadily. The grip feels good, and the zoom/shutter buttons are well placed so you can use them with just one finger.
The picture quality is great...everything I'd expect from a Nikon (esp. with the Nikkor lens). I've been using some of my pics as desktop backgrounds (at 1600x1200), and they still look great. I can't wait to get my first set of prints back!
Overall this is a great little camera...no regrets, and I've got more cash in my pocket than if I'd bought the Canon
Rating: 
Summary: Amazingly small... very effective camera
Review: I had previously purchased the coolpix 2000 and wasn't thrilled with it. The biggest drawback is that it didn't have a viewfinder... you had to look at the mini-monitor. The coolpix 3100 improves greatly on that camera. It does have a viewfinder... it seems about half the size (and thats saying something since the 2000 was acceptably small and light. And, throw in an extra mega-pixel and I think its well worth the money ... Biggest drawbacks: In low light it gets very grainy looking. Also the "auto redeye reduction" in the sofware is not great. The manual redeye included in the software works better (and thats good enough for me).
Rating:
Summary: Very cool
Review: I bought the Nikon coolpix as my first digital camera, and I'm very much satisfied by the results of the camera, but then I have a few quirks to it as well. First, the camera is small. It doesn't fit my pocket, yes, but when it comes to similarly sized cameras, this one wins in the price category. The LCD is wonderfully lit, an comparing to most of my friend's, Coolpix 3100's is clearer even when viewed at odd angles (and with bright light). I also have that small dot that many users complain about, but I don't really mind it, as it's not immediately noticeable anyway. Picture-wise, this camera produces very satisfying results. The 14 scene / assist modes are a wonderful addition to help you get the most impressive pictures for almost any situation. I, however, have found myself turning the flash off more often, as the results are softer and more pleasing, in both cases, it performed well. Speaking of the flash, I always wonder why it has to turn off and recharge every so often, which makes taking another picture seem like forever,but once you get used to it, then it's all fine. It's power usage is probably its worst aspect, don't even bother using Alkaline batteries coz it would die even before you take a single picture. Even with rechargeable NI-MH's, it still goes through it pretty fast. Ready a spare every time because you don't know when it would go off. All in all, this is wonderful camera especially for its price and simple to use features, perfect for the beginning photographer.
Rating:
Summary: Best All Around Camera
Review: I've used this camera for several months now. It is easy to use, it has easy to read the menus, and takes great photos like all my other Nikon cameras. It has an easy point and shoot capability, but Nikon has Scene Modes to make sure you get the best out of every shot. I just got back from a wedding in the moutains of California. I was able to capture all the views with the Landscape Scene Mode that is in this camera as well as the faces of the bride and groom with the Back Light Mode when the sun was behind them. This camera rocks.
Rating: 
Summary: Nikon 3100
Review: I bought a Nikon coolpix 3100 after a lot of search through the stores, but I got diasppointed with the performance. First the LCD screen has many dots which is lit all the time. (In the users guide it written that this is normal!!).
Second and most disappointing is the optical view finder, if you switch the LCD screen off and try to take some pics, it takes many sec (5-6 sec in my peice) to take the picture, or this function is completely useless. I called the Nikon Tech support and they also checked and agreed this problem. I think it is a basic bug in this new product. So be aware what you are going to have. Good things are it is very compact, quality of the pictures are good.
Rating:
Summary: Its small its cute..but..
Review: This is a really small camera a bit thick but it looks really cute...but the problem with this is that the night shots are not very clear..my guess would be that the flash is not strong...oh about the flash...well its a multi-screen flash..ie..it goes off like 2-3 time before the final take..it may be a good idea when u think of it from a technology point of view but what really happens is that it causes the subject to become cautious or close their eyes..I personally found the photos from my Canon A60 (2MP camera) to be better than this camera
Rating:
Summary: Very COOLpix
Review: I am amazed at the clarity of the photos. This is not the first digital camera I have had, but it is the best! I love the short movies that I can film, I love the scene assistant.. It is cool all around. Took it camping this past weekend, got some excellant shots of the Mtns, made them look pretty close and clear even though they were far away... Sure I might be able to get a better camera.. but not at this price!
Rating:
Summary: I'm quite happy with my Nikon Coolpix 3100
Review: The Nikon Coolpix 3100 is very user friendly. It have 16 scene for us to choose, this is a easy way to set it in difference situation (e.g. daylight, nighttime, sunset...) This is important for us, because we are not familiar with the professional camera that need to set alot of setting by ourself.
This will take alot of time for us to learn....!
But one thing i not sactisfied is no voice recording for Nikon Coolpix 2100/3100. If you want good picture, I recommended to buy 3 Mega Pixel and above.
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