Saturday, 13 November 2010

Sigma 18-125mm f/3.8-5.6 DC OS HSM


Today will be about the lens I've got. I'm suppose to get it on Tuesday but due to some people not being able to read my name properly, I got it on Friday. Whatever. I guess the saying 'Stupidity comes in all forms' does fit the situation.

Enough with all chitchat. Lets get to the point. The lens that I've got here is the Sigma 18-125mm f/3.8-5.6 DC OS HSM. In case you guys didn't know what DC OS HSM is, click here to know it. Here are some key features of it.

- High zoom ratio lens designed exclusively for digital SLR.
- Incorporate Sigma's OS (Optical Stabilizer)
- SLD glass and Aspherical lenses provide high image quality throughout the entire zoom range.
- Super multi-layer coating reduces flare and ghosting.
- Compact construction of 88.5mm (3.5”) in length and 74mm (2.9”) in diameter.
- Minimum focusing distance of 35cm (13.8") and maximum magnification of 1:3.8, making it ideal for close-up photography.
- HSM ensures quiet and high speed autofocus.

It can fit Sigma, Nikon and Canon nicely with all functions can be used. However, for Pentax users, the camera body must support HSM or else, the function won't work and your will be stuck with manual focus. And also the OS is not available for Sony and Pentax mount mainly because they has built it stabilization in the camera body.

The Advantage of this lens are as follows:
- Excellent for capturing small objects with a minimum focusing distance of 13.8 at all focal lengths & produces a maximum magnification ratio of 1:3.8
- HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus
- Offers Sigma’s OS System (Optical Stabilization) allowing handheld photography even in low-light situations. It offers the equivalent of using a shutter speed approximately 4 stops faster.
- Cheap
- Really nice focal length range. Really nice-sized lens. It seems solid and well-built with nearly no wobble in the components.

The lens also comes free with disadvantage such as;
- Barrel distortion is apparent at 18mm (this is no surprise), but pincushion distortion quickly sets in over the rest of the focal length range. Pincushion distortion is especially strong between 35 and 60mm and again in the low 70s.
- This is not a real sharp lens even stopped down.

Here is the picture of my lens mounted on my Canon EOS 1000D with its hood on.

And here is a sample of photo taken with this lens.

The main reason I get this lens is because its a very good travel lens which suit a normal travelling needs from wide angle to telephoto. And also because its cheap and the DSLR body that I bought didn't come with a lens. This lens can replace your kitlens but it will not fit your normal bag you use for your kitlens. Why? Its bigger and longer.

Hope that will help you. Thanks for reading.

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