Only a quick test (ie only tried once as darkness fell) I set up my black-painted cylinder with fluoro-pink vertical stripe atop a dismantled air-cooler fan, synced to 78 rpm using strobe disk and a domestic power dimmer (don't try this at home)...

Both tests 720P 1/250 320 ISO. Lens 1 Som Berthiot Tele-Cinor 1:1.25 f75 Lens 2 Schneider-Kreuznach Xenon 1:1.5/25

Don't pay much attention to results. I want to do some modifications; ie a narrower stripe.

@Roberto No, I already tested it a lot. In the real world. It's obvious is skews less in ETC.

@balazer Yes, my testing will conform to scientific rigour. Capturing images at the same phase is easy, because the images match. Both camera and barrel apparatus are locked-off and level . In post, images must show little overlap.

"Cherry picking"... You will be under the utmost scrutiny, guaranteed .....haha

@balazer

I find a very good way of double-checking the speed of objects crossing the screen is to count the frames in the time line. This way, I can reject all my samples which don't comply.

@mpgxsvcd

With your truck shots, All of trucks 1 to 3 have their bumpers crossing right to left in 8 frames. Truck 4 (white) at 3:004 with "Fine Printing Paper" marked on its trailer takes a full 15 frames. Red truck 6 at 05:007 through to truck 9 (blue & white front) at 8:005 are all 8 frames. After that everybody slows down.

As for the 24fps stuff, I cannot view it correctly because of the 24-30 fps pull-down; too many re-doubled frames. But your original 24 fps mts can be tested.

It looks like you're pretty right about truck speeds being consistent enough for skewv testing (that 8 frame-crossing at 30 fps) but you'll also have to time them and select like I wil.

Their measurements seem to be correct. I read the topic more carefully and what I tested was 1080 while Roberto's focused on 720. Hence the difference in test results.

I just read the firmware 1.1 notes, "You can set to [EX. TELE CONV.] when recording still pictures or motion pictures." For a minute there I hoped it might mean while recording. [Afraid not]..

-But wouldn't it be fantastic to be able to suddenly pull wide? I film dance a lot. When a camera pulls in tight I know instinctively there'll be trouble as soon as the dancers move.

But imagine a one-button ETC-OFF and wham! Instant wide shot.

Is this already on a wish-list?

@jansson

Yes that is normal with high ISOs. You might want to check the original with streamparser and make sure that it doesn't have a dip in bit rate during that segment. I see that a lot when I shoot the moon. Having a highly detailed and bright portion of the scene with a mostly dark border will show that affect.

Try lowering the ISO, make sure Intelligent Dynamic range is off, and try different color modes. Smooth and Nostalgic boost the dark areas just like Intelligent dynamic range does. That is why most people think that they offer more dynamic range.

Cinema is the only color mode that doesn't boost the signal. It underexposes by about 1/3 to 1/2 a stop. It clips the highlights though.

B&W Smooth will boost the signal the least. It has contrast issues though.

you could try it again at iso 200 to get rid of that noise bug. Interested to see if it helps!

It seems to me that @Roberto 's pics say it all with there being a slightly smaller angle of skew using ETC.

@Walker In Roberto's pictures the slant was nearly identical, with any tiny variations (less than a few degrees) easily accounted for by different speeds of the trucks driving by. His modification and analysis of @zigizigi's images don't convince me in the other direction either; I have no idea what speeds those sliders were going at all.

@Walker Yeah, that's the one I was hoping to see him follow up on. But I don't see enough difference in ANYONE's test to justify the constant assertion (in this board and elsewhere) that shooting in ETC reduces Rolling Shutter.

Possibly a good test might be a spinning horizontal barrel with graph paper on it. It the barrel can spin at a constant rate, we can just measure the compression or expansion of the graph paper. Sort of measuring the jello instead of the skew. (Except that measuring an ANGLE in a vertical line/horizontal motion test seems to be easier to scale accurately -- the angle is the same no matter how much you zoom in or out).

And maybe instead of a barrel, using the @jdenkevitz idea of utilizing a computer screen showing a constant-velocity pattern, possibly?