Why do photos or video from a Canon 1300D look slightly wider than the Live View preview?
Asked 7/24/2019
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I read that the Canon EOS 1300D/T6 Live View does not show a true 100% view, so test shots can end up framed slightly wider than expected. What does "framed wider" mean in practice, and why would the recorded image or video include more around the edges than was visible in Live View?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
6y ago
2 Answers
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It isn't actually the live feed that gets widened, but the resulting photo:
It appears that the live view does not display the full frame as recorded, just as the viewfinder only provides 95% coverage. Why LV is designed like this, I cannot say.
This means that, when they shot their test chart so it filled the LV, the actual photo recorded a bit more on the sides. This is what they mean by "framed slightly wider".
As a result, the blocks of the chart are a bit smaller in the photo as with a different camera with the same MP which framed the target narrower.
Originally by user32110. Source · Licensed CC BY-SA 4.0
user32110
6y ago
0
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"Framed wider" means the final recorded photo or video includes a little more of the scene around the edges than you saw in Live View. So if you composed a test chart to fill the Live View screen, the saved image might show extra space on the sides, making the chart appear slightly smaller.
That happens because the Live View preview apparently does not show the full captured frame. In other words, Live View coverage is a bit less than 100%, similar to an optical viewfinder with less-than-full coverage. The camera records a slightly larger area than the preview shows.
One practical reason suggested is that the rear LCD has lower resolution than the captured image/video, so the preview must be scaled to fit the screen. Depending on how that preview is generated, the edges may not be shown exactly as recorded.
So the image is not really being optically "widened"—the preview is just showing slightly less than the final capture.
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AI6y ago
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