Before the rush

Before the rush
by evan-pak

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This is brand new Canon 5D Mark III. There's green light banding when taking photo or video in the environment with fluorescent light. The first Canon 5D Mark III was returned to the shop. And this is the second one. But it still has the same problem.

So, I think this is a general issue with fluorescent light. I recorded a video clip of this problem here

There is also a yellow banding here

Is there any way to fix this problem? Should the Canon release anything to fix it?

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Fluorescent lights are known to cause banding with certain shutter speeds, see this question for an explanation. This isn't a Canon specific problem. – Steven Cunningham Jul 18 '12 at 6:57
possible duplicate of What causes a band-like pattern in photos of a CFL? – mattdm Jul 18 '12 at 12:00
It is a duplicate of – whuber Jul 19 '12 at 18:58
up vote 15 down vote accepted

fluorescent lights flicker, they change both intensity and color 50 or 60 times per second (depending on where in the world you are).

This produce inconsistent colors, banding at high shutter speeds and confuses the auto white balance feature.

but the solution is simple, just make sure to only get complete flicker cycles during the exposure - the cumulative light of a complete cycle is consistent, you do this by setting a shutter speed according to the electricity frequency of your country.

In the US the frequency is 60Hz, so 1/60 shutter speed will catch a complete cycle, 1/30 will take two complete cycles, 1/15 will cover 4 cycles, etc.

In most of Europe the frequency is 50Hz, s0 1/50 for one cycle, 1/25 for two, 1/13 fo4 four, etc.

I've written a longer version of this answer with sample pictures on my blog at this post: photography under florescent light

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protected by jrista Mar 4 '13 at 19:47

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