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Old 06-08-2012, 11:10 AM   #1
SAWYER
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Default Canon T4i

http://www.theverge.com/2012/6/8/307...e-release-date
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Old 06-08-2012, 11:24 AM   #2
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major changes from t3i
- digic 5
- touch screen (pinch to zoom)
- iso boost up to 25600
- 5fps
- 9 af points (all cross type like 60d)
- continuous AF during video
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Old 06-08-2012, 03:22 PM   #3
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How can you have simultaneous phase detect and contrast detect autofocus without a translucent mirrror?
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Old 06-08-2012, 03:59 PM   #4
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ooo that 40mm pancake lens looks enticing. wish it was faster though
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Old 06-09-2012, 01:02 PM   #5
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Quote:
Originally Posted by Throckmorton View Post
How can you have simultaneous phase detect and contrast detect autofocus without a translucent mirrror?
Beside the traditional AF sensor, extra phase detect module is built right on the CMOS sensor itself.
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Old 06-12-2012, 11:36 PM   #6
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Quote:
Originally Posted by Aharami View Post
ooo that 40mm pancake lens looks enticing. wish it was faster though
QFT.

40mm, an interesting compromise. Long enough to be normal on FF, short enough to almost be normal on crop. I think I will probably end up with one... the price is certainly right. But f/2.8 is making me have to think about it. If it were even f/2.2, it would be a no-brainer.
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Old 06-13-2012, 02:29 AM   #7
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Canon doing pancake is great news for all, I do hope they introduce more.
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Old 06-13-2012, 02:47 AM   #8
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Quote:
Originally Posted by Cattykit View Post
Beside the traditional AF sensor, extra phase detect module is built right on the CMOS sensor itself.
Does it use the CMOS sensor's pixels or are there additional phase detecting pixels in there somewhere?
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Old 06-13-2012, 03:38 AM   #9
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Quote:
Originally Posted by Throckmorton View Post
Does it use the CMOS sensor's pixels or are there additional phase detecting pixels in there somewhere?
http://www.dpreview.com/previews/can...0d-rebel-t4i/3

Scroll down a bit.

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Old 06-13-2012, 04:33 AM   #10
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Quote:
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All they do is explain what it does. No shit, autofocus autofocuses...
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Old 06-13-2012, 05:44 PM   #11
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going to guess it works the same way as fuji's
http://www.dpreview.com/news/2010/8/5/fujifilmpd


pretty sure the regular AF motors were stepper motors. that these are quiet is the main change.
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Last edited by ElFenix; 06-13-2012 at 05:47 PM.
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Old 06-13-2012, 09:18 PM   #12
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Interesting... so some pixels are sacrificed (at least half of the pixel) to act as phase detectors
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