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Old Dec 14, 2007, 6:31 PM   #1
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I noticed that to shoot video in 1280x720 you have to back up quite a bit from your subject to get it completely in the frame compared to shooting in 640x480. Here are two screencaps of the same wall in the different modes. It looks like they're cropping the 640x480 video and enlarging it to the HD resolution. Any ideas?

Here's a small side-by-side to fit them on the screen together, large ones are below.


1280x720 (reduced to 640x360 to post here)


and, keeping the camera in the exact position, 640x480 mode

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Old Dec 14, 2007, 6:48 PM   #2
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my guess

style="BACKGROUND-COLOR: #000000"you have to accomodate for widescreen and that iswherecropping is neededfor 4:3 of640x480 widescreen are 740 1280 etc
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Old Dec 14, 2007, 9:02 PM   #3
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Wouldn't you think that a HD camcorder would record in the HD format by default, then crop it for the 4x3 video? Why would a 4x3 video show more information both in width and height than a 16x9 video when shot on a 16x9 camera? Are there two sensors in this recorder? Is this a reason that Amazon has been putting these down to $300-$350 recently?
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Old Dec 15, 2007, 12:14 AM   #4
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That may be a sneaky way to keep the bits per second within the camera's capabilities. I trust you know that digital image stabilization will do the same thing. Will the camera use IS in both modes?
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Old Dec 15, 2007, 8:04 PM   #5
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Just got home...it has been a long Friday/Saturday. Charging the battery a bit and will take another clip/screencap without IS on. I never even thought about how much that may affect it.
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Old Dec 15, 2007, 9:13 PM   #6
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OK, I made sure IS was disabled for both of the following and it doesn't seem to make a bit of difference....






Is there such a thing as a "widescreen" image sensor? When buying a HD camcorder, shouldn't I expect it to record to whatever WS size by default (here being the 1280x720) and crop that to get the 640x480 version?

I just don't see why when recoding 4x3 I have more information at ALL SIDES of the frame than when recording 16x9.
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