Canon EF-S 10-22mm f/3.5-4.5 USM Lens

Canon EF-S 10-22mm f/3.5-4.5 USM Lens 

Excellent super-wide solution for EF-S mount 

21 April 2007

By brainleek007  

This lens was created to fill the hole in Canon's range for a super wide angle lens for their range of EF-S mount DSLR's.

Fortunately, since it inhabits a unique position in the range, it is a superb lens and there is no real alternative (from Canon anyway) that covers the same focal lengths.

It's not an L lens so don't expect weather sealing and and lens pouches/lens hoods in the box. Do expect a very well built lens with excellent image quality.

The lens has a very close minimum focusing distance of 24 cm which can be useful for odd effects at the wide end of things. The zoom and focusing rings are smooth and well placed. The lens takes huge filters (77mm) which can add a lot to the purchase price but should be considered essential as the front element is very convex and should be protected. A useful tip - get the slimmest filters you can for this lens as the lens is so wide angle standard filters will cut off the corners a fraction in the frame.

Image quality is excellent. DOF is almost a non issue with this lens as even at minimum aperture and focusing distances greater than close range everything seems to be in focus. There is no appreciable increase in sharpness when stopping down either like you get with some lenses. I leave mine at around f5.6 all the time because I read somewhere that this is the sweet spot for the lens (it's all sweet but apparently this is marginally sweeter). There is a little bit of colour fringing that can creep in for backlit subjects but nothing that can't be edited out and it's par for the course for a lens of this type. What is probably better than normal in terms of performance is the lens' control of flare which is very good. I haven't had flare in my shots even with the sun in the frame. There is no noticeable pincusion/barrel effect either. Solid performance all round.

So if you have an EF-S mount Canon there really are not many choices out there for a super wide lens. It's not the cheapest but it probably is the best out there right now

  Click to>>>>>>>>>>>Canon Min. Focal Length : 7-15 mm

Camcorder Vs Digital Camera

Camcorder Vs Digital Camera
By Manuel Zerna

58mm Flower Petal Camera Lens Hood for Canon EOS EFS 18-55mm EFS 55-250mm EF 70-300mm EF 50mm Lens

Good Lens: As others have noted this petal design is not suitable for the 18-55mm kit lens. Canon's own hood for this lens is round, not petal shaped, as in inherently required for lens with a rotating front element.

I'm not sure if its suitable for the others the seller lists either. A hood needs to be matched to the focal length (or range of lengths for a zoom), not just physically fit. Using a hood designed for the wrong focal length will either result in vignetting (dark corners) or not be as effective as it should be at reducing flare. Do yourself a favour, look up the correct hood as recommended by Canon for your lens. If you don't want to pay Canon's prices then use the model number to find a cheaper clone, just make sure its actually the correct shape, not just physically fits






Digital cameras made impressive advancement in the video recording world. Now you can buy still digital cameras, even DSLR cameras that feature HD recording. Therefore, you might be asking yourself why you need to use a camcorder by any means.
Besides keeping me hired, there are many good reasons why a camcorder remains the better option for recording in every life's reminiscences in movement.

Video Quality
Many digital cameras are featuring the 720p resolution, but few smaller ones will complement the much higher quality of 1080p recorded by average camcorders. If you wish that your kid's first step to appear sharp throughout the years (or otherwise till HDTVs are changed with something much better), you cannot surpass a devoted camcorder.
Even in the normal definition of video, the gulf in value could be essential. Standard definition camcorders can shoot video in a better bit rate compared to a conventional digital camera.
Lenses
The lens of the camcorder can give you a more powerful zoom, delivering better magnification. Even though there are numerous cameras that have long zooms available on the market, they cannot surpass the 30x or 60x lenses on a few camcorders.
Oftentimes, still digital camera lenses don't even work in recording a video. When they do, they won't work quietly, just like the lenses of a camcorder. When you are zooming and filming using a still digital camera, it is possible to remove the noises in the zoom in the course of recording.


Media Options
Still digital cameras record their video clips using memory cards. Camcorders also record to flash memory cards, however, they also can record to built-in hard disks that provide additional recording compared to your biggest space storage device. You can even save your video clips right to any DVD media for your ease of playback on the DVD players.

Audio
The built-in mics employed by camcorders are better than those on still digital cameras. You can find even more complex sound recording choices on camcorders also, like the power to zoom to the origin of a sound immediately. Several camcorders can also record multichannel audio sound.


Video Controls
Several sophisticated camcorders allow you to modify the viewpoint, the speed of the shutter and also the white balance to adjust the image. However, you cannot implement the same thing when recording videos using a still digital camera: It is just a point and a shoot and shoot gadget.
For more information and best deals on the best camcorder, visit this amazing website at bestcamcordersreview.com Read their latest review which is the Sony HDR-CX110 High Definition Handycam Camcorder Review.
Article Source: http://EzineArticles.com/?expert=Manuel_Zerna
http://EzineArticles.com/?Camcorder-Vs-Digital-Camera&id=5918994


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