If you have worked with a film SLR and yearn for the same amount of control, then the time is right for a digital SLR camera. Resolution has reached — and some say surpassed — that of film.

But new cameras hit the market with amazing frequency. Why? Well, in the old film days things were simple. Once you found a brand you liked, you bought their professional camera and you were set for decades. Each year pictures got very slightly better due to advances in film technology.

Digital cameras contain the film. Each advance in color depth, resolution, and noise comes from the works stuffed inside a new camera.

Size and Weight of Digital SLRs
My personal philosophy is: if it doesn’t fit in your pocket, then size and weight are no longer a big factor.

You might be tempted to look for the smallest, lightest camera you can find, but consider these things: a smaller camera might not fit your hands, so check it out first, and a light camera is more difficult to hold steady for a shot at low shutter speeds than a heavier camera. Plus, the camera is only one part of the equation. A lens will add weight, and a fast, professional lens will add lots of weight. More glass equals more light and usually less distortion. But the compromise is weight.

Shake Reduction – Image Stabilization Defined
Image stabilization allows the photographer to take pictures at slower shutter speeds with less probability of producing a blurred picture. The best you can expect to hand hold a lens at a particular focal length is determined by the formula 1 / focal length. Thus you might hand hold a 500mm lens at 1/500 of a second, or a 28mm lens at 1/28 of a second.

How Manufactures Impliment Shake Reduction
Every manufacturer calls shake reduction something different. Canon calls it IS, or Image Stabilization. A Canon IS lens includes Image Stabilization inside the housing of the lens. With my Canon 17-55mm IS lens, I can hand hold a 27mm lens at 1/6 of a second and produce a pretty sharp picture.

Manufacturers like Olympus put the shake reduction inside the camera. This means that all the lenses you buy with benefit from shake reduction. In-camera shake reduction isn’t quite as efficient as in-lens shake reduction though, but if you’re on a budget and don’t want to travel with a tripod, it’ll save you money.

Lenses for Digital SLRs for the Travel Photographer – Focal Length and Aperature
What’s my top lens focal length? 27mm. Travel photography is a wide angle deal. I do use other focal lengths, especially for shooting people, but 75% of my travel photography is done at my zoom’s widest angle.

Cheap lenses have maximum apertures of 3.5 or 4 at wide angle, and are as slow as 5.6 at moderate telephoto focal lengths. A smaller aperture means that you can focus your viewer’s attention on the subject you’re presenting by blurring the background, making for a far more pleasant picture than the type of picture you might take with a pocket camera where the whole frame is in focus. [By James Martin]

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