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Canon XL H Series HDV Camcorders
Canon XL H1S (with SDI), Canon XL H1A (without SDI). Also XL H1.


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Old August 26th, 2006, 07:03 AM   #1
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Blurred Panoramic Images

Hi,

today I've used the Custom Presets for the first time. However, I noticed an annoying issue, some of the panoramic shootings were a bit blurred, I was shooting with the Iris at 9.5 so I shouldn't have seen such a result. Could it be because of the CP tunings? I pushed the Coring to +9 and the NR to High. Could this be the problem?

Thanks a lot guys.
Cheers

Christian
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Old August 26th, 2006, 07:29 AM   #2
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It would be the noise reduction which works by adding several frames together and taking the average. Thus any objects in motion will be smeared (leave a trail). Also I would think coring set that high would turn any textured surface to plastic but it shouldn't cause any blurring.
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Old August 26th, 2006, 11:18 AM   #3
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Christian,
Running the Iris on the standard lens at 9.5 could also be part of the problem. The Iris on this lens pretty much closes to black the next step after that. Many lenses get soft at the extreme ends of the Iris. The other comments about your settings also apply
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Old August 26th, 2006, 01:35 PM   #4
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Christian,
Try some test pictures at different apertures. I try to avoid 9.5 and instead use ND or decrease the exposure time if possible. You will see aperture from about 8 and up is not as good as the lower numbers.
These HD cameras are really living on the edge of the law physics, optics, electronics, lense design etc.
The resulting picture is stunning but a lot of things can degrade it here and there if you are not careful. Good luck! /Johan
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Old August 26th, 2006, 08:40 PM   #5
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Quote:
Originally Posted by Christian Bertolini
Hi,

today I've used the Custom Presets for the first time. However, I noticed an annoying issue, some of the panoramic shootings were a bit blurred, I was shooting with the Iris at 9.5 so I shouldn't have seen such a result. Could it be because of the CP tunings? I pushed the Coring to +9 and the NR to High. Could this be the problem?

Thanks a lot guys.
Cheers

Christian
Why did you make those adjustments? They will ALL soften the image and together will create a "worst case scenario" for sharpness... did some HVX fanboy give you that preset? LOL

In 1/3" CCD world try to not go more closed that F6 or so, and NEVER more than F8. Coring is an adjustment used to cover digital noise caused by oversaturated colors or increased gain, it can also be used to take the dancing out of tight patterns but it will overall soften the image. NR should never be on high unless you are doing static shots with no movement and in this case it should not be needed at all...



ash =o)
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Old August 27th, 2006, 02:25 PM   #6
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Quote:
Originally Posted by Ash Greyson
Why did you make those adjustments? They will ALL soften the image and together will create a "worst case scenario" for sharpness... did some HVX fanboy give you that preset? LOL
<snip>
I totally dig the HVX, but that gave me my first laugh of the day.
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Old August 27th, 2006, 05:56 PM   #7
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Thanks a lot guys, your help is much appreciated. I'm pretty new to Video and I'm trying to use the photgraphy rules that, obviously, don't work for video shootings.

Cheers
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Old August 28th, 2006, 11:43 AM   #8
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Quote:
Originally Posted by Christian Bertolini
Hi,

today I've used the Custom Presets for the first time. However, I noticed an annoying issue, some of the panoramic shootings were a bit blurred, I was shooting with the Iris at 9.5 so I shouldn't have seen such a result. Could it be because of the CP tunings? I pushed the Coring to +9 and the NR to High. Could this be the problem?

Thanks a lot guys.
Cheers

Christian
There are 2 Noise Reduction options - if you used NR1 and set it to High you will have significant blurring on any motion or panning in the shot. What we have found this setting useful for are very static or sloooooow smooth pans of night shots - recently we shot night time exterior casino and skyline shots with little or no motion with medium and high NR1. All the low light video white noise was removed from the black sky and other blacks -worked beautifully.

NR2 does not produce trails/blur but is far less aggressive with noise reduction but can be used with motion.
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Old August 28th, 2006, 03:51 PM   #9
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really you shouldn't stop down past 5.6, at that point the depth of field is pretty much endless and after that the 1/3" format begins to crack rather rapidly
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