Monday, 11 June 2012

18MP Canon 650D dSLR launched, with contrast and phase detection

         Today, almost as if responding to this week’s rumors, Canon officially announced the Rebel T4i digital SLR and the 40mm f/2.8 “pancake” lens. The new, standout features on the T4i body include Canon’s first use of a multitouch screen, a new hybrid CMOS sensor, and the Movie Servo AF, which offers quiet continuous autofocus while taking video.

The camera’s vitals include an 18 megapixel sensor, DIGIC 5 image processor, up to ISO 25600 sensitivity (extended, 12800 otherwise), 5 frames per second shooting, a 3-inch display, and 1080p30 video (as well as 25p, 24p, and 720p60/50p.

            The changes from Canon’s highly regarded T3i are not tremendous, but they are more considerable than the past few updates. The effect of the new hybrid CMOS sensor remains to be seen and only testing will let users know how they feel about the touchscreen but, past those, the important back-of-the-box changes are limited to one stop higher ISO and 5 fps shooting over 3.7 fps. So, ultimately, the notable upgrades on this body won’t be able to be sussed out from the specs alone.
With the T4i expected to be available for purchase at the end of June, the release comes about at year and a half after the February 2007 unveiling of the Rebel T3i and a little over a year after its April release date. That turn around time is pretty much standard in the cutthroat consumer digicam market.
Canon 40mm               Along with the new body Canon announced their new line of STM (stepping motor) lenses. These are quiet lenses optimized for use with continuous autofocus systems — so that the sound of the lens adjusting itself is not picked up by the microphone and the focusing is as smooth as possible (unlike your 50mm f/1.8).
The lenses include the  EF-S 18-135mm f/3.5-5.6 IS STM  and the 40mm f/2.8 STM. The latter is the more exciting of the two, as it’s Canon’s first pancake-style lens. The two will sell for $549 and $199 and also be available at the end of June.

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