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Old September 4th, 2006, 03:24 AM   #1
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Sony CMOS Sensor Discussion

Who here is shocked to find that all current Sony AVCHD High-Def cam's CMOS sensor is only 1434K effective pixels in AVCHD recording?

All this means to me: Lower Quality. Sony could've raised it to the HC1's 1983K effective pixels. Even the HC3 has only 1493K effective pixels! What's going on here?
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I wait for the day cost-efficient global shutter 60fps capable CMOS sensors emerge for use on major manufacturers' cameras. (Sony, Canon, etc.) Rolling Shutters are a plague.
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Old September 4th, 2006, 06:15 AM   #2
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What's going on here?
Um, consumer cameras? Seems that hanging your hopes on consumer market cameras to ALWAYS go onward and upward as far as specs might not be wise sport.
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Old September 4th, 2006, 05:57 PM   #3
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^Sure it's not but the average joe doesn't even have money to rent a Z1 for one day!

Most people don't have $7000 to spend.
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I wait for the day cost-efficient global shutter 60fps capable CMOS sensors emerge for use on major manufacturers' cameras. (Sony, Canon, etc.) Rolling Shutters are a plague.
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Old September 13th, 2006, 10:09 AM   #4
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The HC3 looks pretty good so I have hopes for this camera. Though the HV10 has better detail.

Last edited by Wes Vasher; September 13th, 2006 at 11:04 AM.
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Old October 6th, 2006, 03:34 AM   #5
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Bayer vs 3CCD (pixelshift ?)

Ops, see next post.

(I got an error message while posting and posted it again ... bad decision:-(


/Henrik

Last edited by Henrik Andersson; October 6th, 2006 at 05:46 AM.
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Old October 6th, 2006, 03:36 AM   #6
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Bayer color filter arrays vs 3CCD or Foveon X3 'full color' sampling.

Hello,

I've been thinking of the difference in resolution between a great consumer 3CCD videocamera vs the cheap color filter single chip HDV/AVCHD-cameras.

It seems to me that it wouldn't be that much higher resolution in the first generation of single chip HDV/AVCHD cameras.

Assuming a sampling of fullcolors per pixel (without pixelshift etc) would give about 0.5MP in an PAL widescreen camera ?

The Sony HC1 and HC3 have a 1440x1080 CFA based sampling which should give a luminance resolution of 0.75MP and lower chrominance resolution.

The Canon would be aroung 1MP lumince resolution with its 1920x1080 based image.

(Please note that I've not lowered the resolution due to interlace or any other effect here. I just assume that they don't downscale the image to 1920/1440x1080, it's a crop of the sensors full resolution.)

Some other posts I've made:
http://forums.dpreview.com/forums/re...ssage=19720658
http://forums.dpreview.com/forums/re...ssage=19462155

/Henrik
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Old October 6th, 2006, 03:12 PM   #7
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Originally Posted by Henrik Andersson
The Sony HC1 and HC3 have a 1440x1080 CFA based sampling which should give a luminance resolution of 0.75MP and lower chrominance resolution.
HC1 has a full 1920x1440 sensor.
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Old October 6th, 2006, 06:45 PM   #8
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The only time the HC1 uses the full sensor to media is with digital stills. It's crops top and bottom for video.
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Old October 7th, 2006, 06:47 PM   #9
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Yes but the sensor itself is a full sensor in the same sense as the hv10.
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