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Wednesday, December 17, 2008

Sigma 18-200mm f/3.5-6.3 DC Lens for Canon Digital SLR Cameras

Marketing description is not available.
Customer Review: Great All Around General Purpose Lens
This lens provides adequate telephoto and a nice wide angle in one package. I've used it on both the Canon XT and XSi and it works great. It is the one lens I just leave on.
Customer Review: An OK lens for the price; autofocus is hit and miss - and noisy.
I received one of these for Christmas...so I've had it for 6 months now. I've taken thousands of shots with it, on both a Canon Digital Rebel XT (350d) and a Canon EOS 20d. The bottom line...I like the lens - but the focus is not that great. Abour 35% of your shots are blurry due to inaccurate auto-focus. Specifics... 1) At 200MM (Max telephoto), you will see some blur if you don't use a high shutter speed and hold it steady. This means that just placing your camera on the green "point and shoot" mode, or even "P" mode may not give you a fast enough shutter speed to keep from having blur unless you are in bright daylight. So....here's my technique: at 200MM you may want to bump up your ISO (film) speed to 400 or 800, then use Tv mode (Canon settings I'm talking about - manual shutter speed control) to get a fast shutter speed. I also hold the end of the lens (the petal filter) with my left hand and lean against a solid object or have a good foot stance - or use a tripod. All of this is not any sort of lens defect; rather, it is typical of using a long tele lens that does not have Image Stabilization (IS). You can get IS from Canon, but be ready to lay down some $$$ and carry multiple lenses...more on that later. 2) Noisy autofocus. Yeah, true, it is louder than other lenses, but so what. It is not any louder than the fake autowinder sound my Rebel XT makes. I find its focus quick and only sometimes accurate - except in low light. Although, I will say my 20d does much better than my 350d did with this lens in low light. But, honestly, I don't think the low light autofocus is any worse than the Canon 18-55 kit lens I initially ised. It hunted a lot too in low light, and often would not lock - necessitating manual focus. The manual focus on the Sigma works great in low light, or, to keep autofocus, you can use an external flash for IR focus assist and it locks right up - but it is not always accurate. Other than the Tamron, you WILL NOT find as versatile a lens as this one, especially at this price point. Optical quality is great on my lens. You can do better - but with two lenses. My solution to have this kind of range if $$$ was no object would be the Canon EF-S 17-85MM f4-5.6 IS USM and the Canon EF 70-300mm f/4.5-5.6 DO IS USM...this would add image stabilization and 100MMs more range, but at much more cost, and you would have to carry two lenses. I specifically bought this lens to have a compact, one lens solution. If you read all the reviews you can find, the general consensus is that the Sigma is better than the Tamron 18-200. Plus, the end barrel does not rotate, so you can use a circular polarizer. Show me a lens that has better bang for the buck in a one lens solution, and I'll buy it. Update: I got sick of the blur with the Sigma. The focus is just not reliable enough. I bit the bullet and bought a Canon 28-70 F2.8L USM. Yeah, it is moe than double the cost of this lens and it is huge and weighs a ton, but the quality of the image is unbelievable.


The continuing advances in digital photography make it possible for everyone to capture moments of their lives with more detail and accuracy than ever. Improvements in photo resolution and shutter speed make it easy for both professional photographers and beginners to take great pictures. And even if a photo is not perfect when it is taken, sophisticated editing software can transform it into a work of art.

Experienced photographers say that timing is the most important factor for getting a good picture. There is only a small, limited opportunity to capture a great shot. Whether you are trying to get the perfect sunset photo or get a picture of the winners as they cross the finish line, you must have a good sense of timing and the intuition that lets you know exactly when to press that shutter button. It is this factor that makes photography an art form.

Most people never quite realize the dream of getting a perfect shot. Maybe your picture is framed well, but the lighting is not quite right. Maybe youve got the lighting just right, but you forget to use the flash or red-eye reduction option. In cases like these, digital photography offers an excellent way to get just the look you want in a photo.

Any picture you take with a digital camera can be edited to reach its full potential. Digital photos can be automatically enhanced to improve their color; they can be zoomed or cropped to their optimal size. And, of course, the red-eye reduction capability can improve any portrait. These editing options can all be completed within minutes, giving you the chance to have the most wonderful photos youve ever taken.

With a good digital camera and photo editing software, you can accomplish great things. The capabilities built into your camera represent only the beginning of the editing potential. Software programs really help you make the most of the photos you have. You can use editing software to change the images in any way you desire.

Local or online retailers can provide you with the equipment, software, and information you need to take great digital photos. When selecting a digital camera, you should be sure you buy one that has the features you need and want. You should look for a model that gives great pictures and that also has simple docking methods for downloading the photos from the camera to the printer or computer. Good photo editing software that will let you alter your digital pictures includes products like Kodak Picture, and Corel Photo Album.

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Tuesday, December 16, 2008

Canon LA-DC58F Conversion Lens Adapter for PowerShot A640, A630, A620 and A610 Digital Cameras

Canon is a leader in professional business and consumer imaging equipment and information systems. By developing innovative, high-quality business solutions Canon makes it easy to create, manage, and share images and information better, faster, and more efficiently.
Customer Review: Conversion Lens adapter for Canon Powershot A640
I think the real problem will come if you change constantly the lenses for the camera. I hope i explain well it: i feel this adapter as weak (the camera is for amateur photographers), the adapter is small and has an screw to connect each lens.
Customer Review: Not Worth It
I thought a lens attachment for my camera would really help, but the lenses offered aren't that great. I don't think it's worth the money for this plus any additional lenses.


HP the pioneers in computer manufacturers and specialists in laptops have come out with yet another revolutionary laptop. When the company manufactures goods of extreme high quality, then they are always held up such that the customers expect the most out of them. In addition, it is really hard to satisfy everyone every time. However, we will have to wonder as to how HP makes it possible every time with every one! They beat their own records by producing their wide range of laptops with varied features. In the same record breaking sequence, they have designed the HP Pavilion DV9830US 17 " laptops.

These are one of those "entertainment centric" laptops of HP. They have a wide range screen of 17 inch that can be even compared to the existing desktops. These laptops are available in the most stylish high - gloss finish with wave imprints on them. They have a very high quality multimedia performance. The most notable features of these model laptops are that of their 1.83 GHz Core 2 duo processor. They have a most noticeable RAM of 4GB that will make the laptop function with an incredible speed and efficiency. They are also designed to have a hard drive of 320 GB, which can accommodate large volume of multimedia files and folders. One can perform various tasks such as photo editing, playing high graphic games, burn a DVD simultaneously. Even then, the system would not face any disturbance of the fact that it is designed in such a way to handle effective multitasking.

This notebook has is amazingly bright and it is designed in such a way that it looks bright even in direct day light. The processor is the specialized feature of this laptop. This Intel processor offers a higher performance of over 20% and thereby it also reduces the power consumption. The HP launch quick play buttons help us to access the music or the movies very fast. This model notebook computer is also provided with a remote that you can operate with a wider range. This laptop has so many other notable aspects featuring Nvidia GeForce 800M GS inbuilt graphics card. There are amazing networking features, which can help out the customers in numerous ways.

These model laptops have incredible 4 USB ports and also 1 Fire Wire, which can connect our system to numerous other peripherals. They can also be connected using the HDMI output to get connected to the other peripherals. There is also an added advantage of an IR receiver in this model Apart from this there is a 5 in 1 memory card reader and an inbuilt modem. This laptop model is packed up with so many other preloaded software, which will benefit the user's needs.

The best aspect is the Windows vista premium software that is been provided with this laptop. This OS can satisfy even the users with advance needs. In addition, the battery of this laptop can come up to 2.5hours. This entire package comes for the minimal price of $1249 in amazon.com wherein one can save up to 29%, which is really huge and attractive. What else does any customer need to drive them to get these trendy laptops?

The author is a regular contributor to Best Laptop reviews blog. For reviews of the best laptops visit: http://www.best-laptop.org/

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