The New T3i - Will digital zoom allow normal shooting without Aliasing and Moire.

Phil Bloom · March 7th, 2011, 03:56 PM

from my VERY brief T3i testing, only got it yesterday. It doesn't seem as sharp at 3x as the GH2 does in teleextender mode. Is the Gh2 directly sampling 1920x1080?

Jon Fairhurst · March 7th, 2011, 04:04 PM

I'm also curious about jello. Is the rolling shutter effect reduced in zoom mode?

Kin Lau · March 7th, 2011, 04:42 PM

For Phil & Ryan,

Does the zoom work in 720/60p mode? The manual seems to indicate that it's 1080p only.

Chris Barcellos · March 7th, 2011, 04:55 PM

Quote:

Originally Posted by Phil Bloom

from my VERY brief T3i testing, only got it yesterday. It doesn't seem as sharp at 3x as the GH2 does in teleextender mode. Is the Gh2 directly sampling 1920x1080?

Here is way I look at what Canon and GH2 are doing. Gh2'd have a smaller chip, that might have approximately the same properties of a similar size section of the Canon APC chip. When the Canon does its 3x, I think it is sampling a smaller portion of chip, than the GH2. Thus there should be even less line skipping, and better detail, or at least very similar. If that is so, may be see less aliasing and moire, and maybe less issue with rolling shutter jello.

I did down load Ryan's .mov original, but he even has had to put that through render because he added titling. So I am not sure how much that render has affected things. Would be nice to test GH2 and Canon side by side to see if Canon actually gave us two camera's in one-- a 4/3's or close and an APC.

Also, as I have posted in other posts, and at the Magic Lantern development web, if Canon's code is selecting an area of the chip and sampling only that, can we also possibly through a magic lantern manipulation, get the Canon only to read a letter box portion of the 16 x 9, decreasing line skipping for a 235 aperature.

Ryan Farnes · March 7th, 2011, 04:59 PM

Quote:

Originally Posted by Kin Lau

For Phil & Ryan,

Does the zoom work in 720/60p mode? The manual seems to indicate that it's 1080p only.

I haven't tried it myself, but I've read that 60p doesn't do the 3x zoom.

Ryan Farnes · March 7th, 2011, 05:20 PM

Quote:

Originally Posted by Phil Bloom

from my VERY brief T3i testing, only got it yesterday. It doesn't seem as sharp at 3x as the GH2 does in teleextender mode. Is the Gh2 directly sampling 1920x1080?

I haven't used the GH2, but that doesn't surprise me at all. I would expect its tele extender mode to be more robust. I think the T3i is cropping down to a little below 1080p and then digitally scaling back up. I think...

Hard enough to tell that I still find it a very worthwhile feature.

Stelios Christofides · March 10th, 2011, 07:24 AM

Does the Canon 60D have this x3 zoom feature? I have chosen to buy the 60D over the 600D for other reasons but this zoom feature is nice to have.

Stelios

Ryan Farnes · March 11th, 2011, 08:30 PM

No, the 60D doesn't. However, its body has a nicer feel to it, more like the 7D I hear. Also, you can manually set the white balance to a kelvin value.

It seems that Canon just keeps adding a little feature here and there is all. Some rumblings about the 5D III and an improved video codec...

Ryan Farnes · March 12th, 2011, 04:37 PM

Some direct comparison tests. Download original file at Vimeo.

March 7th, 2011, 03:56 PM	#31
Phil Bloom Trustee Join Date: Aug 2006 Location: London UK Posts: 1,939	Re: The New T3i - Will digital zoom allow normal shooting without Aliasing and Moir from my VERY brief T3i testing, only got it yesterday. It doesn't seem as sharp at 3x as the GH2 does in teleextender mode. Is the Gh2 directly sampling 1920x1080? __________________ Philip Bloom Cinematographer, Director, Filmmaker www.philipbloom.net

March 7th, 2011, 04:04 PM	#32
Jon Fairhurst Inner Circle Join Date: May 2006 Location: Camas, WA, USA Posts: 5,513	Re: The New T3i - Will digital zoom allow normal shooting without Aliasing and Moir I'm also curious about jello. Is the rolling shutter effect reduced in zoom mode? __________________ Jon Fairhurst

March 7th, 2011, 04:42 PM	#33
Kin Lau Major Player Join Date: Mar 2009 Location: Ottawa, ON Posts: 385	Re: The New T3i - Will digital zoom allow normal shooting without Aliasing and Moir For Phil & Ryan, Does the zoom work in 720/60p mode? The manual seems to indicate that it's 1080p only.

March 10th, 2011, 07:24 AM	#37
Stelios Christofides Trustee Join Date: Jul 2003 Location: Nicosia, CYPRUS Posts: 1,080	Re: The New T3i - Will digital zoom allow normal shooting without Aliasing and Moir Does the Canon 60D have this x3 zoom feature? I have chosen to buy the 60D over the 600D for other reasons but this zoom feature is nice to have. Stelios __________________ My Blog: http://steliosc.blogspot.com "I hope for nothing, I fear nothing, I am free" Nikos Kazantzakis

March 11th, 2011, 08:30 PM	#38
Ryan Farnes Major Player Join Date: Jul 2008 Location: Maryland, USA Posts: 220	Re: The New T3i - Will digital zoom allow normal shooting without Aliasing and Moir No, the 60D doesn't. However, its body has a nicer feel to it, more like the 7D I hear. Also, you can manually set the white balance to a kelvin value. It seems that Canon just keeps adding a little feature here and there is all. Some rumblings about the 5D III and an improved video codec... __________________ Vimeo Profile Maryland Wilderness Channel

March 12th, 2011, 04:37 PM	#39
Ryan Farnes Major Player Join Date: Jul 2008 Location: Maryland, USA Posts: 220	Re: The New T3i - Will digital zoom allow normal shooting without Aliasing and Moir Some direct comparison tests. Download original file at Vimeo. T3i Direct Comparisons on Vimeo __________________ Vimeo Profile Maryland Wilderness Channel