Canon 30d Reviews

The Bigma: Sigma's new behemoth

Sigma 50-500mm F4.5-6.3 APO new DG OS HSM is both a mouthful and a handful. Tipping the scales at nearly 2 kg, and with a 95mm filter thread, the initial temptation is to use it as a grenade launcher. Sigma-called perfect all-round lens, most photographers simply call bigmir.

First, demystify some of the nomenclature.APO Apochromatic means and refers to elements of specific shape of lens and coated that are designed to mitigate the inevitable trade-offs such as optical chromatic aberration (CA) inherent in zoom (as opposed to fixed focal length lenses, also known as prime lenses). CA is certainly well managed over the entire range of bigmir no small feat with such a wide range.

In the terminology of Sigma DG lens means is optimized for digital cameras, Sigma claims but the benefits can also be seen when using slides (positive rather than negative film) in a 35mm camera.This is not to be confused with DC, indicating a lens only suitable for cropped-sensor digital cameras. Bigmir loves the full-frame sensors and similar cultures.

The last two, OS and HSM are fairly simple. The first refers to the lens of the built-in optical image stabilization and the second at hypersonic engine used to focus the lens quickly and quietly. The optical stabilization works on all camera brands, Sony and Pentax even - who in private rather than the stabilization target - and its effects are visible in the viewfinder.

This is one of the great strengths of Sigma - the lenses are usually slightly cheaper than their owners and are generally available in every major mountain. This is certainly the case here - the bigmir is available for Canon, Nikon, Pentax, Sigma (of course) and Sony cameras, with minor variations between frames.

The bigmir has been around for some time and the most notable change in this lifetime is to increase the diameter of 86mm to 95mm filter.Thoughtfully includes a Sigma 95-86mm step-down ring with the bigmir for those using cropped sensor body, which means they should not worry about vignetting or for those with an existing collection of 86mm filters.

Apart from those who like to oohs and aahs of other photographers, which is exactly the bigmir for? Despite its weight, with its zoom range 50-500mm, the lens is aimed squarely at amateur landscape, nature and wildlife as it is also useful for landscapes for bird watching or photographing game, but it Undoubtedly popular with fans of street photography francs and voyeurs.

Canon EOS 30D 8.2MP Digital SLR Camera Kit with EF-S 18-55mm f/3.5 ...

There are probably many people out there who are thinking about buying this camera to upgrade. If you own a 10D then the choice is pretty easy, as you get extra MP plus new features. However, what if you own the XT, is this a worthwhile upgrade? The answer is that it depends if you need the new features. Based on my personal experience, however, the answer is a resonating yes! IMAGE PARAMETER: is awesome! I know how to set parameters on my XT to suit the shooting situation (portrait vs. nature for example). However, many of my friends who own the XT don't bother to make any changes. With the 30D, however, changing the parameters is as easy as dialing in what you are shooting. You set it on portrait and no more over saturated pictures of your friends! This new feature makes the professional level 30D extra friendly for amateurs. Aside from those four great improvements there are few nice features here and there. As for all other aspects of photography, like auto focus and light metering for example, this camera will not disappoint you. It beat my XT in every aspect, except price! Therefore, if you are comfortable making the investment get this camera, it rocks! PS. ABOUT THE KIT LENS: I personally don't like the kit lens because it focuses slowly, renders colors poorly, and produces marginally sharp pictures. I say marginaly because it's a shame to couple the awesome 30D with such a low performance lens. Instead I would buy the body only and invest few hundred dollars in an excellent prime or a decent zoom. If you are new to photography, however, and not sure what to buy instead of the kit lens consider buying the 50 1.8 Canon lens along with the kit lens. That lens will serve as a good reference point for what you are missing by using the kit lens. Furthermore, the 50 mm lens goes for only $70 new. Use both lenses, learn the difference, and from there decide if it's worth it for you to buy different lenses. Good luck either way. UPDATE APRIL 6: The 30D auto focus is superior to the Rebel XT. Generally speaking when I am out shooting in the forest preserve I make sure I take few exposures of the same scene without changing the composition. I do that because very often the camera would focus on the wrong object and render my pictures useless. The 30D on the other hand is better it focuses on the right object more often. It's just "smarter" in focusing, which mean that now I can take pictures of more scenes with my 512MB memory card.

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