Strange Red Banding in HQ at DVinfo.net

Tyler Smith · July 11th, 2009, 12:03 AM

I just shot about 30 hours of vision on my new EX3. I'm really happy with all the footage, bar one clip.

Here is a link to it: Strange EX3 red banding.. on Vimeo

I noticed the red banding whilst recording and sure enough it turns up when the focus hits the water.

The sun was setting at the time, could it be some sort of IR issue?

This was the only time this happened, so I'm not too stressed about this occurring regularly, just curious.

Cheers,

Tyler

Gavin Rawlings · July 11th, 2009, 02:03 AM

What the hell... Thats pretty strange... I've never seen that before...

Vincent Oliver · July 11th, 2009, 02:51 AM

It looks like Moire to me or flicker due to the shutter. What shutter speed did you use.

Leonard Levy · July 11th, 2009, 01:58 PM

Could it possibly be a reflection of the sunset that only showed up where you were in focus?

Tyler Smith · July 12th, 2009, 05:24 PM

The shutter speed was set at 1/50. It could be moire, with some sort of interaction with the orange of the setting sun.

Leonard Levy · July 12th, 2009, 06:01 PM

Was the sun directly in front of you?
If so when out of focus the mix of reddish orange and the blue from blue sky at another part of the surface waves might have mixed to create the yellow. Then as you focused in the two color areas might have become distinct yielding the red/orange banding next to blue sky with every thin wave. That's my bet!

Tyler Smith · July 13th, 2009, 06:16 PM

Hi Leonard, the Sun was directly in front of me, so that could be what's happening. Pity it's not a more attractive effect!

Thanks for your help.

Matthew Hurley · July 14th, 2009, 07:36 AM

Quote:

Originally Posted by Tyler Smith

Hi Leonard, the Sun was directly in front of me, so that could be what's happening. Pity it's not a more attractive effect!

Thanks for your help.

WoW! I think maybe the laws of physic,s could come into play here. Could the horizontal ripple effect of the water caused a refraction of the sun,s light wave lengths? Kind of like a prismatic effect?

You know like when you take a prism, then let sun light shine thru it, you break the sun,s light into its visible bands. Red,green and blue.

Did you have any sort of filtration on the cameras lens? Whatever it was,it looked very unusual.

I actually was hoping to see the Loch Ness monster or a UFO in the shot. LOL.

Tyler Smith · July 14th, 2009, 09:19 PM

There was a UV filter on the lens, but nothing else.

A friend of mine mentioned that it might be some form of Chromatic Aberration, due to the fact that I was shooting almost wide open ~f2.4

July 11th, 2009, 12:03 AM	#1
Tyler Smith New Boot Join Date: Jul 2004 Location: Sydney, NSW Australia Posts: 24	Strange Red Banding in HQ I just shot about 30 hours of vision on my new EX3. I'm really happy with all the footage, bar one clip. Here is a link to it: Strange EX3 red banding.. on Vimeo I noticed the red banding whilst recording and sure enough it turns up when the focus hits the water. The sun was setting at the time, could it be some sort of IR issue? This was the only time this happened, so I'm not too stressed about this occurring regularly, just curious. Cheers, Tyler __________________ www.free-range.tv

July 11th, 2009, 02:51 AM	#3
Vincent Oliver Trustee Join Date: Sep 2004 Location: Chislehurst, London Posts: 1,724	It looks like Moire to me or flicker due to the shutter. What shutter speed did you use. __________________ Eyes are a deaf man’s ears. Ears are a blind man’s eyes

July 12th, 2009, 05:24 PM	#5
Tyler Smith New Boot Join Date: Jul 2004 Location: Sydney, NSW Australia Posts: 24	The shutter speed was set at 1/50. It could be moire, with some sort of interaction with the orange of the setting sun. __________________ www.free-range.tv

July 13th, 2009, 06:16 PM	#7
Tyler Smith New Boot Join Date: Jul 2004 Location: Sydney, NSW Australia Posts: 24	Hi Leonard, the Sun was directly in front of me, so that could be what's happening. Pity it's not a more attractive effect! Thanks for your help. __________________ www.free-range.tv

July 14th, 2009, 09:19 PM	#9
Tyler Smith New Boot Join Date: Jul 2004 Location: Sydney, NSW Australia Posts: 24	There was a UV filter on the lens, but nothing else. A friend of mine mentioned that it might be some form of Chromatic Aberration, due to the fact that I was shooting almost wide open ~f2.4 __________________ www.free-range.tv

July 11th, 2009, 02:03 AM	#2
Gavin Rawlings Regular Crew Join Date: Feb 2009 Location: Sydney, NSW, Australia Posts: 40	What the hell... Thats pretty strange... I've never seen that before...

July 11th, 2009, 01:58 PM	#4
Leonard Levy Trustee Join Date: Feb 2006 Location: USA Posts: 1,684	Could it possibly be a reflection of the sunset that only showed up where you were in focus?

July 12th, 2009, 06:01 PM	#6
Leonard Levy Trustee Join Date: Feb 2006 Location: USA Posts: 1,684	Was the sun directly in front of you? If so when out of focus the mix of reddish orange and the blue from blue sky at another part of the surface waves might have mixed to create the yellow. Then as you focused in the two color areas might have become distinct yielding the red/orange banding next to blue sky with every thin wave. That's my bet!