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Old Jan 19, 2009, 10:27 AM   #1
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Hello:

Other that dimensions, is there a reason I wouldn't shoot 16x9 if the camera can do it natively?

Is the 4x3 setting just cropping the edges - which is something I could do myself?

Thanks for your help. I am an amatuer with a DMC-LX1

Saki
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Old Jan 19, 2009, 12:22 PM   #2
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saksirisan wrote:
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Is the 4x3 setting just cropping the edges - which is something I could do myself?
Yes. That's it. The 16:9 aspect ratio image has the same horizontal resolution as the 4:3 image, but less vertical resolution. Basically, the 16:9 imageis the 4:3 image with the top and bottom chopped off.
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Old Jan 19, 2009, 12:54 PM   #3
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TCav wrote:
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saksirisan wrote:
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Is the 4x3 setting just cropping the edges - which is something I could do myself?
Yes. That's it. The 16:9 aspect ratio image has the same horizontal resolution as the 4:3 image, but less vertical resolution. Basically, the 16:9 imageis the 4:3 image with the top and bottom chopped off.


In most cases, but not all.

There are digicams where the 16:9 format IS really wider. The Panasonic TZ5 and LX series, INCLUDING THEORIGINAL POSTER'SLX-1,have real 16:9 format capture vs. just cropping the sensor like mostall other models do.

Using a TZ5, I can toggle through the formats while watching the LCDand see more image area on the wide sidesas you move from 4:3 to 16:9. The lesser TZ model, the TZ4, just crops the sensor as already said.

TZ5 image specs:

4:3 3456 x 2592

3:2 3552 x 2368

16:93712 x 2088

LX3 specs:

4:3 3648 x 2736
3:2 3776 x 2520

16:9 3968 x 2232




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Old Jan 19, 2009, 1:38 PM   #4
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Thank you, Greg Chappell, for correcting me. So in some digicams, the horizontal resolution of a 16:9 image is wider than a 4:3 image.

But that raises another issue. The outer edges of a 16:9 image are going to be captured by the outer edges of the lens where it is most likely to be flawed. The digicams you're talking about use Leica lenses, so they are less likely to be adversely affected by this, but it's still something I would be concerned about with any other camera.
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Old Jan 19, 2009, 1:46 PM   #5
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TCav wrote:
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But that raises another issue. The outer edges of a 16:9 image are going to be captured by the outer edges of the lens where it is most likely to be flawed. The digicams you're talking about use Leica lenses, so they are less likely to be adversely affected by this, but it's still something I would be concerned about with any other camera.
This is probably why most, including all of Panasonic's other digicam models, simply crop the sensor to do a fake 16:9 format. Even with the TZ and LX series, Panasonic is using in-camera corrections in addition tothe great opticsto get the results they do.

You'd never really know with the TZ series since it has no RAW capture capability, but there's been plenty of discussion over in the Panasonic forum at DPReviewregarding the LX3 and software corrections Panasonic is applying to even the RAW files and the situation they had with Adobe before they finally started supporting the LX3.
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Old Jan 20, 2009, 3:05 AM   #6
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Thanks y'all. I just read the specs:

• 3840 x 2160 (16:9)
• 3072 x 1728 (16:9)
• 1920 x 1080 (16:9)
• 3248 x 2160 (3:2)
• 2560 x 1712 (3:2)
• 2048 x 1360 (3:2)
• 2880 x 2160 (4:3)
• 2304 x 1728 (4:3)
• 2048 x 1536 (4:3)
• 1600 x 1200 (4:3)
• 1280 x 960 (4:3)

So should I conclude that shooting 16x9 captures everything and if I wanted any other dimensions, I could just crop afterwards? In other words, there's not any advantage to using other settings?
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Old Jan 20, 2009, 6:24 AM   #7
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On your camera, the maximum vertical resolution of the image sensor is 2160, and the different aspect ratios are acheived by varying the horizontal resolution. The image sensor has a native aspect ratio of 16:9 and any other aspect ratio is a cropped version of that.

So, yes.
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