NEW CANON DSLR FOCUSES ON SMOOTH VIDEO
By John P. Mello Jr.
07/03/13 12:23 PM PT
Advanced pledge photographers increasingly wish inclination which can do both stills and video with commercial-quality results. Canon’s new EOS 70D includes a CMOS sensor written to dramatically urge a autofocus opening when sharpened video. Pixels upon a new sensor perform still imaging and phase-detection AF simultaneously. It’s “faster and some-more precise,” pronounced Creative Director David Busch.
Canon took a step brazen Tuesday in elucidate a complaint that’s been plaguing DSLR videographers for a prolonged time: progressing well-spoken video with a camera’s autofocusing complement .
The Canon EOS 70D
With Canon’s new 20.2 megapixel EOS 70D, photographers will be means to fire video tighten to a peculiarity of video shot with a camcorder, according to a company. The tip to a 70D’s softened focusing opening is a newly written CMOS sensor, which contains pixels which perform both imaging and focusing functions.
Pixels upon a new sensor perform still imaging and phase-detection AF simultaneously, dramatically mending AF opening over pick EOS cameras during Live View sharpened and when sharpened video, Canon said.
Live View is used to fire stills regulating a DSLR’s LCD instead of a viewfinder. The new sensor additionally improves component shots when regulating Live View in a 70D.
Better Live View Focusing
Dual Pixel CMOS AF achieves shorter focusing times, well-developed tracking performance, and smoother autofocusing during video shooting, a association said. Because Live View sharpened can be used in a demeanour identical to regulating a camera’s viewfinder, a quick and well-spoken AF opening allows users to mix some-more courtesy upon a theme and combination of a print when shooting, a association said.
An combined reward of a new focusing complement is a await of some-more than 1000 EF lenses.
Imaging and focusing upon required DSLRs have been achieved in opposite areas of a camera. The focusing sensor is customarily located upon a building of a camera and uses light from a camera’s counterpart to operate. The counterpart in a DSLR is what allows we to see in a viewfinder what your lens sees.
When sharpened video or stills in Live Screen mode, a DSLV’s counterpart is up so a focusing sensor doesn’t have a light it needs to function.
To residence which problem, DSLVs typically use an pick focusing process called “contrast detection.” It uses changes in a contrariety in a shot to establish optimal focus.
“That’s really slow,” David D. Busch, beautiful executive for a David Busch photography guides, told TechNewsWorld.
“The process is tighten and takes longer,” he added.
“What Canon and a small pick vendors have been starting to do right away is embody special pixels in a sensor used for phase-detection focusing. It’s similar to putting a second auto-focusing sensor in a camera,” Busch explained.
“That’s faster and some-more precise,” he said.
Canon is a initial DSLR builder to pierce focusing wholly to a sensor. There have been a small hybrid systems in a marketplace which mix focusing pixels with their phase-detection subsystems, with churned results.
Those systems use a focusing pixels to tighten in upon a concentration indicate though use contrast-detection to close in a last point.
“You still get a small back-and-forth, similar to a jiggle, to a focusing action,” Philip Ryan, record editor during Popular Photography, told TechNewsWorld.
An wholly opposite proceed was taken by Sony in a SLT cameras.
“They have a counterpart that’s translucent,” Terry Sullivan, join forces with editor for digital cameras and imaging for Consumer Reports, told TechNewsWorld.
“Unlike an SLR, where a counterpart flips up, Sony’s stays in place so we can autofocus for still photos and video,” he said. “It’s a most appropriate of both worlds.
That approach, however, does eat up about a third of an f-stop of light.
“It’s an additional square of potion in a visual path,” Popular Photography’s Ryan noted. “Canon doesn’t need that.”
Pricey for Typical Consumer
The 70D will interest to imagesmiths who wish to fire blurb peculiarity video with a still camera, Busch predicted.
“This new focusing complement will have modernized video shooters even happier,” he said.
“This turn of camera is directed during a modernized amateur,” celebrated Ryan.
At a referred to sell cost of $ 1,199, a section is a bit pricey for most consumers, remarkable Consumer Reports’ Sullivan.
Convergence has been a clever direction in a market, he added, with consumers embracing inclination which can do both stills and video.
“Camcorder sales have been tanking,” Sullivan said. “It’s not which consumers have been shopping DSLRs. They have a smartphone which they feel is great enough.”
In further to a new autofocusing system, a 70D’s facilities embody a following: