Canon EOS 70D, autofocus is the protagonist - Tom's Hardware Guide

Into Canon has presented this morning to the press his new EOS 70D , giving us the opportunity to see first hand what is being heralded as one of the most significant innovations in the field of SLR for some time now . We talk about the new CMOS sensor APS-C 20.2 MP with autofocus technology Dual Pixel CMOS AF .

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Into It is a technology-based AF phase detection sensors, designed to provide a smooth and fast focus when shooting video and a fast autofocus when shooting in Live View mode. The heart of this technology is the sensor, whose 20.2 million pixels are made up of two photodiodes each, for a total of 40.3 million photodiodes . These photodiodes can be read simultaneously, to constitute a pixel of the final image, but also separately to get an autofocus in which the position of the lenses is calculated beforehand according to the phase difference of the two images in parallax.

Into Because each individual pixel is made 2 photodiodes, the focus phase detection is potentially available throughout the frame, Canon, qualitative issues related to the incidence of light at high angles to the edge of the frame, has decided not to actually use the whole area but a still impressive 80%.

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Each pixel in the sensor of the EOS 70D is made up of 2 separate photodiodes. This allows the photographer to have a focus on phase detection in LiveView mode on almost all the captured area (about 80%).

Into The first taste of this technology, in the few minutes available, it was really impressive. Canon has virtually bridged the gap between focus in “viewfinder mode” and Live View , with the latter – unless you deliberately go looking for the situation “impossible” out of uniform items – hooks up with great speed and security . It is worth noting also that this technology is compatible with most Kit EOS: 103, to date, the EF / EF-S lenses can be used.

Into even the most classical phase-detection AF system to be used with the mirror down has been overlooked. Far from it. For the first time on an EOS body we find a 2-digit 19-point AF system, all cross , distributed over a reasonably wide of the frame. A handy dedicated button next to the shutter button allows you to scroll through the modes AF without taking his eyes from the viewfinder.

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Operating diagram of the focus phase detection in LiveView mode. From the signals from the two photodiodes that make up the single pixel, the camera obtains the distance to the subject and moves the lens without fail, without trial and “focheggiamenti” typical of the system focus on contrast detection.

Into Many other aspects are then been improved compared to the 60D. The processor 14-bit DIGIC 5 + allows you to get up to ISO 12,800 natives (was 6400 for the 60D) with the possibility to extend the range up to ISO 25,600, and to shoot at 7 fps up to a maximum of 65 JPEG or 16 RAW , which is not bad for a body that arises under 1200 Euros List. So it seems that the 70D may be a great choice for those who want a versatile body for all kinds of photography, sports and nature including, without going to the cost of dedicated professional bodies.

Into The viewfinder was also improved compared to 60D, even if not yet cover 100% of the field of view: one stops in this case to 98%, with a magnification of 0.95x. Like the 60D, the display 3.0 “LCD is adjustable and offers, in addition to a resolution of 1,040,000 points, touch-screen functionality . Submitted addition, the Wi-Fi integrated , more and more appreciated by users of all kinds and, with regard to access, there is also a wireless Speedlite transmitter built-in for remote control of external flashes.

Into Finally, were included in the 70D (or enhanced) functions purely as a consumer HDR in-camera creative filters and with the recent possibilities of visualization effect when shooting in LiveView mode.

Into The movies are, of course, Full HD 1080p with a choice of frame rates selectable between 30, 25 or 24 fps, and 60 and 50 fps at 720p. Built-in stereo microphone.

Into In our opinion, the EOS 70D is a successful mix of advanced features and consumer , which has been able to bring most of the features for which it is appreciated the EOS 7D in a lower price range, including in the while all of the features most appreciated by the audience’s consumer 60D (swivel display) and some welcome another new (Wi-Fi). With a list price of 1,184 Euros, it seems that Canon has made the center.