Gh2 skew

[ICD Films]

7D/t2i scewing can be controlled with shutter speed (ie action scenes), GH1 totally useless on this point. Looks like GH2 plays the same leauge, too bad.

 

[John Caballero]

Would there be less skew on 720p24 footage than 1080p24? I am wondering because the D7000 has 720p24.

 

[roei z]

7D/t2i scewing can be controlled with shutter speed (ie action scenes), GH1 totally useless on this point. Looks like GH2 plays the same leauge, too bad.

i didn't know that.. oh well, another thing to be careful about

 

[Barry_Green]

7D/t2i scewing can be controlled with shutter speed (ie action scenes)

No it can't. Shutter speed has zero effect on the amount of skew any rolling shutter camera exhibits.

And the Gh1 was directly comparable to the 7D (seeing as I owned both at the time and compared them, and in 24p they were extremely closely matched).

 

[Barry_Green]

Would there be less skew on 720p24 footage than 1080p24? I am wondering because the D7000 has 720p24.

It all depends on the sensor. On the AF100 the 720/24 and 1080/24 skew are identical. On the HPX300 the 720/24 was much less skewed than the 1080/24.

 

[Ben_B]

Here is GH1/2 Skew test. GH1 was on top of GH2, I did the best I could with that, hotshoe to 1/4" 20, couldn't get the shots exactly the same. GH1 had Nikkor 50mm and GH2 used 14-140mm at 50mm. Both lenses stopped down to f/5.6, GH1 was at ISO 800, GH2 at 1600. Both at 1/320th shutter. First shot is a superimposed test with two colors so you can see both at once, GH2 is in red, GH1 in blue. Second shot is same test, both cameras at same time. Last two shots are each shot one by one. Both cameras were shooting 1080/24p, and transcoded to ProRes 422 in post. Gh1 pulldown was removed in Compressor. Shots were synced with a clap on the audio track. Skew looks about the same to me. .MTS files could be up if really needed but I think downloading the vimeo should be fine.

WHOOPS HIT SUBMIT, VIDEO COMING SOON!

Uploading, 1.5 hours or so.

Weird glitch with vimeo, reuploading..

 

[Pietro Impagliazzo]

The same? That's nice.

Waiting for further tests.

 

[woodcarver]

About the same is great. Thanks very much for the work Ben.

 

[Ben_B]

I don't know why but Vimeo seems to be not working right now, my video uploads and never transcodes...I am going to reencode at a lower quality.

 

[ICD Films]

No it can't. Shutter speed has zero effect on the amount of skew any rolling shutter camera exhibits.

ok

everyone ignore my post then, it is a false and random statement

why would i bother sharing tips based on experience

 

[Ben_B]

Test is ready!

 

[roei z]

excellent test, thanks!

so ? what's your verdict ?
looks almost the same. not such a big difference. interesting test would be 7d

 

[farfromsubtle]

It seesm like the GH1 had a bit of vertical jello that I didn't see on the GH2 screen.

 

[Dazza]

I think someone already posted a test of the GH1 vs the 7D for skew

 

[roei z]

I think someone already posted a test of the GH1 vs the 7D for skew

correct, but the movements were very un-unified and not parallel enough to really tell.
Ben did a serious test.

 

[Peter J. DeCrescenzo]

Test is ready!

Hi Ben: Thanks very much for doing this test, and for doing it correctly!

Me thinks the GH2 & GH1 CMOS skew is essentially identical, for all practical purposes.

Warning: Kids, don't try this at home! ;-)

 

[timbook2]

Thanks for this excellent test Ben! Any idea how to get rid of this dizzyness now?

 

[Stephen Mick]

For a moment I thought Ben shot this at my house… I have both of the same grills he has on my porch!


Nice test, Ben!

 

[Ben_B]

Thanks guys!

Big Green Egg Stephen!!!!! This is my parents house, home for the holidays.

 

[Noel Evans]

Skew seems same, but GH2 seems a little hardier on the jello wobble from small shakes.