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News: Discuss Canon EF 70-200mm f/4L IS USM...Canon today announces the EF 70-200mm f/4L IS USM, Canonís first interchangeable lens with 4 stop Image Stabilizer. This allows ...
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Old 24-08-2006, 18:34   #1 (permalink)
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Canon EF 70-200mm f/4L IS USM

Canon today announces the EF 70-200mm f/4L IS USM, Canonís first interchangeable lens with 4 stop Image Stabilizer. This allows hand held photography with no perceptible image blur at shutter speeds up to 4 steps slower than otherwise possible Ė ideal for low light shooting without tripod or flash.
Dust and moisture resistant, compact, manoeuvrable, and incorporating Canonís finest standards of precision optics, Canonís latest professional L-series lens is expected to be popular for travel, expedition and wildlife assignments where there is a requirement to travel light without compromising image quality.


The EF 70-200mm f/4L IS USM features
  • Compact lightweight body - 760g, 172mm length
  • 4 stop Image Stabilizer with 2 modes
  • 1 x Fluorite and 2 x UD lens elements for superior optical performance
  • Ring type USM auto focus with full time manual override
  • Circular aperture diaphragm for even background blur
  • Environmental seals for dust and moisture resistance
  • Super Spectra coatings to suppress ghosting and flare
  • 1.2m minimum focus distance
  • Lens hood and soft pouch
The EF 70-200mm f/4L IS USM offers a lightweight alternative to the renowned EF 70-200mm f/2.8L IS USM, complementing Canonís other professional L-series lightweight zooms such as the EF 17-40 f/4L USM and EF 24-105L IS USM. f/4L lenses are designed for professional photographers requiring a light zoom lens with a fixed aperture throughout the zoom range. The lens adds Canonís proven Image Stabilizer technology to the popular EF 70-200mm f/4L USM while maintaining that lensí compact size.


Image Stabilizer
4 step Image Stabilizer (IS) extends low light options to previously unimaginable levels. Photographers normally shooting handheld at 1/250 sec can switch on IS to obtain a similarly steady and blur-free result with a shutter speed of just 1/15 second.
IS reduces dramatically the image blur caused by camera shake. Gyro sensors detect unwanted vibrations, triggering the corresponding movement of a correcting lens group perpendicular to the optical axis. This alters the light path, returning the image to its correct position on the sensor or film plane.
For shooting immobile subjects, Mode 1 corrects for movement in the image along both the horizontal and vertical axes. For shooting while panning horizontally to follow a moving subject, Mode 2 turns off vertical correction and prevents the effect of dragging the subject back through the frame.
IS switches off automatically when the camera is mounted on a tripod, thus preventing feedback loops between the IS sensor and internal motor vibrations.


Superb autofocus
The lensí Ring-type USM employs ultra-sonic frequency vibrations to drive auto focus with unrivalled speed and near-silent operation. A powerful CPU and improved AF algorithm contribute to speed performance. Good holding torque stops the lens with precision and accuracy, the instant it arrives at the correct focus point and without overshoot. Photographers can switch to manual focus instantly and at any time simply by moving the manual focus ring without first having to switch out of auto focus mode.


f/4 from 70 to 200mm
The EF 70-200mm f/4L IS USM offers the highest possible optical quality with no change in aperture over the full focal range of the lens. This allows photographers to set exposure at the widest aperture and zoom all the way through to 200mm without having to decrease shutter speed. Lens length does not alter during zooming and the front lens element does not rotate during zooming or focusing. The lens employs an almost perfectly circular barrel aperture, helping create attractive, even background blur.


Image quality
A newly designed optical system limits lens size and improves image clarity over the total image area. 1 x Fluorite element and 2 x Ultra-Low Dispersion glass elements are used to eliminate the secondary chromatic aberrations that otherwise reduce sharpness and introduce colour fringing. By optimising Super Spectra lens coatings and lens element shaping, Canonís engineers have been effective in suppressing flare and ghosting Ė more prone to occur with digital cameras due to reflection off the image sensor. By increasing light absorption, coatings reduce reflections off lens element surfaces to deliver crisp, undistorted images with natural colour balance.


EOS system integration
The EF 70-200mm f/4L IS USM includes distance metering information, providing compatibility with the E-TTL II flash system of late model cameras such as the EOS-1D Mark II, EOS-1Ds Mark II, EOS 5D and EOS 400D. When used in conjunction with Canonís range of EX Speedlite flash units, the lens passes distance information to the flash algorithm for markedly improved flash exposure metering. To match the weather resistance afforded by EOS-1 pro camera bodies, an O-ring seals the lens against the lens mount to prevent the ingress of dust and moisture.
AF Mode and IS switches have been reshaped, making them less susceptible to being engaged or disengaged accidentally.
The EF 70-200mm f/4L IS USM comes with a lens hood and lens pouch.
In keeping with Canonís Kyosei philosophy of living in harmony with the environment, the lens features only lead-free glass.



Availability The EF 70-200mm lens will be priced around £689.99 RRP VAT INC (Ä1429.99) and available late September.
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Old 24-08-2006, 18:41   #2 (permalink)
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Re: Canon EF 70-200mm f/4L IS USM

This is a perfect medium range zoom lens and now with the inclusion on 4 stop Image stabilizer I can see this fast becoming a must have lense.

I love my non is version and up until they released this I would never have concidered changing.
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Old 24-08-2006, 19:00   #3 (permalink)
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Re: Canon EF 70-200mm f/4L IS USM

Have you seen our classified section Steve
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Old 24-08-2006, 19:36   #4 (permalink)
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Re: Canon EF 70-200mm f/4L IS USM

What, we have a classified section?
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Old 30-08-2006, 00:34   #5 (permalink)
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Re: Canon EF 70-200mm f/4L IS USM

Anyone know if this has the same glass as the non IS version, just wondering if it retains the image quality of the original?
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Old 30-08-2006, 00:53   #6 (permalink)
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Re: Canon EF 70-200mm f/4L IS USM

Quote:
Originally Posted by Steve View Post
The EF 70-200mm lens will be priced around £689.99 RRP VAT INC (Ä1429.99) and available late September.
I revieved an email from "EOS-Magazine" stating:-
Quote:
Canon has sent us a correction to the price of the EF 70-200mm f4L IS USM lens. The RRP of this will be £989.99, not £689.99. We are updating our website.
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Old 30-08-2006, 01:50   #7 (permalink)
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Re: Canon EF 70-200mm f/4L IS USM

Depending on what the RRP is of the non IS f4 lens as a bench mark I would say that this isnt worth it, prices should fall pretty quick once its released, but as it is at the moment I dont think paying twice of the 70-200 f4 "non" IS is worth it, most people would prefer to hunt for the 2.8 non IS or perhaps even pay another £100 to £300 for the 2.8 IS (where funds allow).

All IMHO but I think Canon are screwing with a lense in which the clincher is the fact its high quality at low price, IS is worth alot, but I doubt its worth £500 more.

However I suspect the first price (£689.99) will be more in line with what this lens will settle at, alot like the newly released 17-55 f2 IS which was quoted at a grand+ I beleive when first available, and is now going for less than £700.

Excuse the rambling
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