Canon, nuovo EF 70-200mm F2.8 L IS II USM - [BLOG]

[MAN]

Canon EF 70-200mm F2.8 L IS II USM - Click per ingrandire


UPDATE (17:58): il prezzo è di 300.000Yen, corrispondenti a circa 2.250Euro. Aggiunti i grafici MTF e lo schema ottico.

Canon presenta il rinnovato zoom EF 70-200mm F2,8 IS II USM della linea professionale L, forse uno degli obiettivi più popolari, tra i professionisti e non, ed uno dei motivi dello scontro eterno con la rivale di sempre, Nikon. Completamente tropicalizzato, con un barilotto in metallo e layout di anelli e tasti ottimizzato,* il 70-200/2,8 presenta uno schema ottico piuttosto sofisticato e al tempo stesso raffinato che, almeno sulla carta, dovrebbe consentirgli di porsi al top in termini di resa. 23 elementi sono raccolti in 19 gruppi; 5 di essi sono di tipo UD mentre un elemento è trattato alla fluorite nell'intento di contrastare il fenomeno dell'aberrazione cromatica ai bordi del fotogramma, ben visibile con i corpi full-frame da 20+ Mpixel. La distanza minima di messa a fuoco è di 1,2 metri a 200mm; compatibilità garantita con gli Extender EF 1,4x II/2x II e gli Extension Tube EF12 II/ EF 25 II.


Canon EF 70-200mm F2.8 L IS II USM - Click per ingrandire




Schema ottico: in verde gli elementi UD (5 in totale); in blu l'elemento con trattamento alla fluorite; evidenziato in rosso il gruppo stabilizzato.


La nuova generazione del sistema di stabilizzazione ottica IS II garantisce, secondo il produttore, un guadagno di ben 4 stop. Il diaframma è composto da 8 lamelle arrotondate per un morbido sfuocato. Peso di 1.490 grammi e dimensioni di 200 millimetri in lunghezza per 89 in diametro. La ghiera porta-filtri è standard da 77mm.* In dotazione con il 70-200mm, l'immancabile paraluce a petalo (ET-87), i tappi ant/post, l'anello per il montaggio su treppiede e la custodia LZ1326. Prezzo e disponibilità ancora sconosciuti.

Grafici MTF a F2,8 a 70 e 200mm


Press release ufficiale(lingua inglese)

The new EF 70-200mm f/2.8L IS II USM – Canon’s essential, high-quality, telephoto zoom lens for professionals


5th January 2010 – Canon today adds to its acclaimed L-series with the launch of the new EF 70-200mm f/2.8L IS II USM telephoto zoom lens. The lens launches as the successor to the immensely popular EF 70-200mm f/2.8L IS USM, offering improved performance in every area.

True to the L-series’ heritage, the EF 70-200mm f/2.8L IS II USM delivers optical excellence in the most challenging situations. As well as a revamp of the internal optical system, the lens has also been structurally re-developed as a direct result of user feedback, making it as robust and reliable as it is optically advanced.

“Reuters’ photographers have used the EF 70-200mm f/2.8L IS USM*for a number of years and it allows photographers a great level of flexibility,” said Reuters Production Editor Kevin Coombs.*“The focal length, fast aperture and Image Stabilizer all contribute to it being a workhorse lens and you’ll find it in many professional photographers’ camera bags. I’m very much looking forward to seeing the improvements offered by the EF 70-200mm f/2.8L IS II USM.”

Premium quality, premium performance

The EF 70-200mm f/2.8L IS II USM features a re-designed optical system, consisting of 23 elements in 19 groups to deliver truly impressive results. A high-performance fluorite element is used at the heart of the lens path, coupled with no fewer than five ultra-low dispersion (UD) elements, drastically reducing chromatic aberration throughout the zoom range to produce high contrast images with edge-to-edge definition.

A high-speed Auto Focus (AF) system perfectly matches the abilities of the recently-launched EOS-1D Mark IV and EOS 7D Digital SLR (DSLR) cameras. The new model also features a ring-type USM AF motor, which combines with a new high-speed CPU and an optimised AF algorithm to make auto focusing both faster and quieter.

A reduced minimum focusing distance of 1.2 metres (3.9 ft) and improved 0.21x magnification will allow photographers to get closer to subjects without needing to swap lenses – greatly benefitting time-pressured news and events photographers who require flexibility. An updated Image Stabilizer mechanism also offers a shutter speed advantage equivalent to four-stops, reducing the effect of image blur resulting from camera shake in busy shooting environments.

Enhanced design, exceptional ease of use

As well as an update to the internal construction, the EF 70-200mm f/2.8L IS II USM features an enhanced external appearance to improve lens operation. The thickness of protruding exterior parts and switches has been significantly reduced, guarding against accidental switching and creating an improved overall look. The rubber focusing grip has also been redesigned and widened; with finely-patterned grooves making it easier to manually focus.

Being an L-series lens, the EF 70-200mm f/2.8L IS II USM is fully weatherproof, making it ideal for use in all weather conditions. The mount, focus mode switch and focusing ring all feature a completely dust and drip-proof structure, preventing dust or water from getting inside the camera and lens when used with accompanying weatherproof EOS bodies. The lens has been designed to stand up to the daily wear and tear of professional usage, making it a highly durable, reliable lens for use day-to-day by professional photographers.

High quality L-series accessories

The EF 70-200mm f/2.8L IS II USM is supplied with several accessories, including the new ET-87 Lens Hood and the Ring-Type Tripod Collar B (W). A brand new Lens Case LZ1326 is also included as standard, offering quick and easy access when users need to switch lenses in time-pressured situations.

Compatibility with a range of optional Canon accessories also allows users to pair the EF 70-200mm f/2.8L IS II USM with the Lens Extender EF 1.4x II, Lens Extender EF 2x II, Extension Tube EF 12 II, Extension Tube EF 25 II, and 77mm filters.