70D, Old Tech?

Started Jul 4, 2013 | Discussions
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Linzthom Regular Member • Posts: 193
70D, Old Tech?

Hasn't Sony been doing this for years with their SLTs ??

Canon EOS 70D
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Keith Z Leonard Veteran Member • Posts: 5,383
Re: 70D, Old Tech?
1

The SLT design is to have a semi translucent mirror so that light will hit the autofocus array and the sensor, but this does reduce light on the sensor.  The Canon design is built into the sensor, it's different.  In the end yeah, they both do AF in video, but it's new tech.

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007peter
007peter Forum Pro • Posts: 10,314
SLT lose up to 1/3 stop of light! Sony is abandoning SLT for 100% mirrorless
1

Keith Z Leonard wrote:

The SLT design is to have a semi translucent mirror so that light will hit the autofocus array and the sensor, but this does reduce light on the sensor. The Canon design is built into the sensor, it's different. In the end yeah, they both do AF in video, but it's new tech.

Keep in mind that SLT lose 1/3 stop of light.  Not a problem when your outdoor, but what happen when you shoot indoor in low light?  SLT receive 1/3 stop less light, which in turn, create more noise, and more noise induce more NR (noise reduction) = more blurry smudgy photos.

Not only is Canon a New Tech, but Sony is also abandoning its SLT for a 100% mirrorless design.  Rumor has it that it also a Hybrid PDAF/CDAF sensor, much like the Canon 70D.

Hybrid Sensor with PDAF is the future or all camera makers now.  Nikon has already done it with V1, Fuji is doing it, Canon is doing it now with a 70D, and soon Sony will join the fray.

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Linzthom OP Regular Member • Posts: 193
Re: SLT lose up to 1/3 stop of light! Sony is abandoning SLT for 100% mirrorless

Sonys already there with their NEX system. And 'loseing' 1/3rd of a stop has had no real effect at all.

Lajos Hajdu Senior Member • Posts: 1,590
Re: 70D, Old Tech?
2

Linzthom wrote:

Hasn't Sony been doing this for years with their SLTs ??

Claiming that this is "old tech"indicates total, willful ignorance. Apparently you haven't even bothered to read the analysis of the technology. If you want to know, read this:

http://www.imaging-resource.com/PRODS/canon-70d/canon-70dA.HTM

Karl Gnter Wnsch Forum Pro • Posts: 11,408
Re: SLT lose up to 1/3 stop of light! Sony is abandoning SLT for 100% mirrorless

007peter wrote:

Hybrid Sensor with PDAF is the future or all camera makers now.

Hybrid Sensor PD-AF is only a valid supplement to the classic PD-AF via separate sensor. It's usability and capabilities is still not (and probably never will be) even close to the required level to replace the full fledged PD-AF, the reason is that to detect more than a little defocusing where an edge is blurred a little there is a need for optical elements in the light path to get the necessary detection. So there is no benefit for Sony unless they want to screw their users as much as Olympus has by going mirrorless all the way.

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Thorbard Contributing Member • Posts: 688
Re: 70D, Old Tech?

Linzthom wrote:

Hasn't Sony been doing this for years with their SLTs ??

New technology with new potential behind it, even if the end result is something someone else is already doing with a different technology.

The nature of technology in general, not just cameras, is that one manufacturer is ahead, another behind. Sometimes they swap places.

It remains to be seen whether the 70D will put Canon ahead or not. Personally, I'm glad I bought a new 7D a couple of months back.

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4thnebula Senior Member • Posts: 1,977
Sony Will Be Coming Out With Their Sensor Phase Detect in 2014

I have read "rumours" that Sony is working on similar sensor phase detection along with Olympus.  I undersand the likelihood of seeing a Sony PDsensor is in 2014 with the A58.  I expect (hope) the technology will be out with the new Olympus OMD EM6 this fall.

Bottom line here though is-looks like Canon is leading in sensor phase detection at least for now.

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photosen Veteran Member • Posts: 4,233
Nope
1

Read the specs.

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Peace On Earth Contributing Member • Posts: 699
Re: 70D, Old Tech?

Thorbard wrote:

Linzthom wrote:

Hasn't Sony been doing this for years with their SLTs ??

New technology with new potential behind it, even if the end result is something someone else is already doing with a different technology.

The nature of technology in general, not just cameras, is that one manufacturer is ahead, another behind. Sometimes they swap places.

It remains to be seen whether the 70D will put Canon ahead or not. Personally, I'm glad I bought a new 7D a couple of months back.

by the time, they produce a camera specs, it is already old :D, they are not making a new technology as we speak for the next model already

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