Sigma SD15

We haven't had a chance to fully test this product yet, but we've assembled this helpful overview of relevant information on it.

Sigma extends its SD line with the SD15. Powered by the 14 megapixel Foveon X3 direct image sensor this camera things like AFE, “TRUE” II image processing and a 77-segment AE sensor. The screen is a 3 inch LCD monitor with Live View capabilities. It also has a backlit LCD top panel. The user interface is updated and streamlined from the previous SD14 model. The ISO settings range from 50 to 3200, just slightly more than the standard. It has a built-in flash and is SD memory card compatible. It weighs 1.5 pounds, more with a lens.

Features List:

– 14 megapixel resolution

– Foveon X3 Direct image sensor

– AFE, 77-segment AE sensor

– “TRUE” II image processing engine

– 3 inch LCD monitor w/ Live View

– Backlit LCD top panel

– Updated User interface

– ISO 50 – 3200

– SD compatible

– Built-in flash

– 1.5 lbs

Digital Trends’ digital camera buying tips:

What are my options?

There are two basic types of digital cameras-point-and-shoot and D-SLRs (Digital Single Lens Reflex). Point and shoot digicams-or as we like to call them “aim and forget”-make up the vast majority of models sold (over 90 percent). The reason is simple: in a single gadget you have everything you need to take good photos. Just aim, zoom in on your subject, press the shutter and the camera does all the work. More sophisticated D-SLRs have interchangeable lenses that let you unleash your inner Annie Leibovitz-they offer higher quality, faster response time and more flexibility. They also are a lot heavier and cost much more. Your decision between the two is purely personal and totally dependent on your level of commitment to photography. No matter which way you go there are basics that hold true for all cameras. Learning them will help you make the right decision.

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!

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.

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.

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