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February 19, 2019, 09:04:48 AM


Author Topic: Interesting little tid bit about the T3i  (Read 4064 times)

Offline Yank Inches

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Interesting little tid bit about the T3i
« on: February 27, 2011, 08:21:13 AM »
I didn't know about the optical zooming. That impresses me.
Canon EOS T3i Review Zoom Feature
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Offline Aluziel

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Re: Interesting little tid bit about the T3i
« Reply #1 on: February 27, 2011, 10:19:46 AM »
Looks interesting but still not enough to buy it.  I think i'll stick to the T2i for a long time now.
Canon 550D Canon EF-S 18-55mm 3.5-5.6, Canon 50mm 1.8 II, Tamron 17-50mm 2.8, Tamron 55-200mm 4-5.6, Aftermarket Batterygrip, Rode Videomic, Meike LCD-VF

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Offline drzenitram

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Re: Interesting little tid bit about the T3i
« Reply #2 on: February 27, 2011, 11:49:25 AM »
That guy misspeaks, it isn't optical but digital zoom. Since the optical sensor takes images at 5184x3456(18mp) you can most definitely only use the center 1920x1080 section, but at maximum (1080p) resolution, that's only 2.7x (5184/1920) zoom... which is still nice, but not 10x. At 640x480  though, you could go up to 8.1x zoom.

However, that would still change the 18-55mm kit lens to an effective 50mm-150mm for video. Pretty cool, but obviously this doesn't work for still images.
Bodies: T2i, 5D Mark ii | Lenses: Sigma 35mm f1.4, Helios 44-2 58mm f2, Sigma 85mm f1.4, Sigma 70-200mm f2.8 OS | Strobes: Canon 480ex II x2, Neewer 180 monolight x5

Sicarn

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Re: Interesting little tid bit about the T3i
« Reply #3 on: April 23, 2011, 02:56:08 PM »
I would think that if the cropped sensor function was used (aka digital zoom), it would also make the rolling shutter issue common on these cameras to be much less apparent.

The way I understood it, rolling shutter was caused by the scan lines on the sensor to be read individually from top to bottom, and as such the bottom line was scanned a fraction of a second after the first line. By reducing the number of lines scanned to begin with, the time between the first line and last line scanning would be much less.

Sounds like the T3i may have use as a good action camera...
« Last Edit: April 23, 2011, 03:03:05 PM by Sicarn »

Offline dookievizion

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Re: Interesting little tid bit about the T3i
« Reply #4 on: April 23, 2011, 09:02:06 PM »
yeah the only DSLR i've been interested in upgrading to is the GH2, that full time Auto Focus will come in handy at live events