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Canon EF 70-300mm f/4-5.6L IS USM Hands-on Review
What makes canon lenses produce a very high quality images
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Canon lenses are the ef lenses, which stands for "electro-focus".They were introduced in 1987 on canon film lenses. Ef lenses have a motor in the lens body to help assist with focusing. They are compatible with all of the current generation of canon digital slrs. Most canon lenses have similar controls. They have a focus ring to help the photographer focus the lens manually,a switch to choose autofocus or manual focus, for the focus mode Image-stabilized lenses allow the photographer to turn the stabilizer on or off as well as select different modes of stabilization for different modes of, one for normal use and one for panning. Zoom lenses have a zoom ring to choose the zoom range. The lenses also have a focus distance switch for the focal distance, which can help reduce autofocus time.Canon lenses are well-corrected for distortion, and have excellent color fidelity and contrast. In addition, they are characterized by superior lens construction. Canon lenses are adjusted through the camera body with no on-lens control. All modern canon lenses focus with a motor in the lens. If you are near-sighted, this is an especially nice feature since it is difficult to focus manually if you wear glasses.
Canon lenses are certainly a good investment, they will last you for years and will most likely be compatible with all new canon dslrs.Canon lenses are designed and manufactured to produce the highest quality images, constrains of technology, manufacturing and cost mean that some minimal aberrations still exist in the lenses. This new addition to dpp aims to correct these minor aberrations and produce even higher quality images. The adjustments available correct four factors in the images. Otherwise known as corner-shading or vignetting. Digital cameras are very susceptible to light not striking the sensor at the correct angle, and with some lenses it is possible to see a slight fall-off in the corners of the image where it looks darker than the rest of the frame. This adjustment aims to even out the lighting across the frame. With wide-angle lenses, it is possible to see distortion around the edge of the lens - straight lines become curved, and subjects at the edge of the frame are distorted. This adjustment ensures straight lines are straight.Canon lenses are the choice of many imaging professionals the world over.
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Benamara has been writing articles online for years now.This author specialize in electronics and photography,you can check out his latest website on canon lenses , You can also check out bose speakers and harmony remote
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Frequently Asked Questions...
for a canon EF mount, what is a the best 300mm telephoto lens?
can be any manufacturer- so long as it fits EF/ EF-S canon mount.
zoom preferable though not necessary.
it doesnt have to be 300mm, just a decent focal range telephoto.
Ive done loads of research but cant make up my mind- just want to hear peoples experiences...
thanks lads / ladies
Answer:
If you are stating EF-s then I'm guessing you are using a cropped sensor body such as a rebel or x0D series.
If so this is good news.
How do you fancy a 320mm equivalent L series lens with f2.8 max aperture and lightening fast AF with superlative image quality (2nd best only to the 135mm f2L in canons range)?
Look at the 200mm f2.8 L II.
Not inexpensive, but a great great great lens for any price, let alone surprisingly low price it's available for.
I have one and it's my favourite lens.
The lack of a zoom makes it far easier to operate, you set the centre spot for AF, you select Ai Servo, you set the advance rate to continous, then you track and shoot.
If you were using a full frame camera you would need to spend 5x the amount to get a comparable optic.
If you are serious about sports then its the way to go on a cropped sensor.
The Max f2.8 aperture brings the AF on all canon EOS cameras to life, but on a rebel it turns the centre AF spot into a cross axis sensor. Without getting all dull and techy, this makes it almost a match for camera /lens combos costing thousands more.
Check out the reviews (www.photozone.de) do a google.
Good luck.




















































































