We haven't had a chance to fully test this product yet, but we've assembled this helpful overview of relevant information on it.
The Canon A3100 IS is a point and shoot camera that is small enough to sit comfortably in your pocket. 12.1 megapixels are available with a DIGIC III Image processor. You can get up to 4x optical zoom and a smaller than standard ISO range of 100 to 1600. It has a built-in flash. View your images on the 2.7 inch LCD screen. It has a surprisingly big aperture range from F/2.7 to 5.6 and a built-in flash.
– 12.1 megapixels
– DIGIC III Image procesor
– 4x optical zoom
– ISO 100 – 1600
– Aperture F/2.7 – 5.6
– Built-in Flash
– 2. 7 inch LCD screen
Digital Trends’ digital camera buying tips:
What about memory cards?
There is no universal memory card to fit all digital cameras – not yet, anyway. Based on internal politics, design considerations and financial reasons, individual camera manufacturers typically adopt a particular style of Flash Memory card for their cameras. Some manufacturers will even split their alliances – one type of memory card for professional-level cameras, and another type of memory card for consumer level cameras. When buying a new Flash Memory card, remember which camera you have and the type of card it requires. Some camera snobs (like your humble writer) will even selectively buy a digital camera based on the type of Flash Memory card they prefer to use!
The most common types of Flash Memory cards are:
Compact Flash, or CF – Roughly the size of a silver dollar (though not round), the CF card is one of the earliest types of Flash Memory cards and is most often used in professional or semi-pro digital cameras.
Secure Digital, or SD – Roughly the size of a postage stamp, the SD Card is available in a wide range of storage capacities. It’s inexpensive, durable and amazingly lightweight.
Memory Stick or Memory Stick Pro – About the size of a small stick of gum, the Memory Stick is meant for Sony Digital cameras.
XD-Picture, or XD Card – Typically found in Fuji and Olympus cameras, the XD Card is about 40% smaller than the SD card.
Memory card buying tips
Name Brand: Buying a name brand memory card can sometimes cost an extra few dollars, but along with the name comes a trustworthy company, a good warranty, a generous exchange policy and a reputation for stability – something that’s much more critical than it sounds.
Speed: Not all Flash Memory cards are created equal. Some are terribly slow and others are turbo charged for high-end digital photography. True high-speed Flash Memory cards will have their speed ratings prominently displayed, whether on the card itself, the product packaging or both. You’ll see ratings like 80X, 133X, 266X, or perhaps 8MB/second, 20MB/second or 40MB/second. If you don’t see this number, inquire with a sales rep. If they don’t know or if the manufacturer hides this info, don’t buy the card. Look for a card that has at least a 9MB/second or 60X rating. Why is this speed important? If you’re taking numerous photos in succession, you don’t want the camera to stop taking photos so it can slooowwly save the images to the memory card.
Storage capacity: There are many factors that affect how many photos you can store on a single card – how many “megapixels” the camera is rated for, whether you’ve selected highest-quality photo settings or if you’ve set your camera to take slightly smaller photos. For example, an 8 megapixel Canon point-and-shoot camera can fit around 2,200 high-quality photos on an 8GB Secure Digital card. By this standard, even a 1GB memory card could hold up to 275 high quality photos. A whopping 16GB card could hold nearly 4,400 pics! That’s a lot!
Key differences between SLR and Point-n-shoot
Price: According to industry analysts, the vast majority of cameras sold go for less than $200. Making the leap to a DSLR will definitely set you back, but many shoppers obviously believe that the investment is well worth it.
Speed: Speed is the one of the most critical factors. If you’ve ever used a compact digicam, you know that these devices take time to focus and save images to memory cards. During these delays, you can easily miss a smiling face or a running child. To put things in perspective: Point-and-shoot digital cameras generally capture 1 frame per second, while most DSLRs take 3 frames per second or more, making them better suited for fast action shots or sporting events. The difference between snagging the perfect picture and missing it entirely is one of the biggest factors weighing heavily in DSLR cameras’ favor.
Image quality: Compact cameras use much smaller imaging devices. By cramming so many megapixels on a small chip, digital noise is a constant problem. In our reviews, we always recommend keeping the ISO (sensitivity) of a digicam at 400 or less. DSLRs have much larger APS-C sized imagers, meaning you’ll encounter less noise in low light situations and better picture quality overall. Using one, you can shoot in more dimly lit conditions without a flash with little image degradation. In addition, if huge prints are in your future-or extensive cropping-DSLRs should be in your sights.
What’s the difference between optical and digital zoom?
Like megapixels, manufacturers frequently throw around big numbers relating to digital zoom. Like megapixels, you should ignore them. Optical zoom uses real optics to get you closer to your subject, while digital zoom merely takes the same amount of pixels you would have in a standard shot and blows them up to fill the frame. The camera captures no more detail. It’s the same zooming or cropping trick you could pull in Photoshop, done in the camera on the fly. While that can sometimes be handy, image quality suffers severely as a result, and most photographers would never use digital zoom.
Don’t Buy Til You Try
One final bit of advice. Never, ever buy a camera purely on its specs or a few positive reviews. What looks good on paper, and what feels good to one person, isn’t necessarily going to be the perfect camera for you. Patronize shops that allow you to spend a lot of hands-on time with your prospective models. Cameras are extremely touchy-feely products, and the truth is that most of them include similar feature sets and take decent pictures. But they come in a wide variety of shapes and sizes, and you’ll be spending many hours with one of them in your hands. Long-term comfort is perhaps the most important factor of all.