How long before 5D noise becomes an issue (on long shoots)?

echo · 2nd of February 2009 (Mon)

I am wondering if there is anyone who's been using the 5DmkII to record video for extended periods and have any comments about noise as the sensor warms up?

I'm wondering if it's a real issue or not - say for 1 hour plus?

Cheers!

Kagemaru · 3rd of February 2009 (Tue)

Well, I don't think you could record for an hour straight if that's what your asking.

echo · 3rd of February 2009 (Tue)

Quote:

Originally Posted by Kagemaru

Well, I don't think you could record for an hour straight if that's what your asking.

That from practical experience or just speculation?

Kagemaru · 3rd of February 2009 (Tue)

Quote:

Originally Posted by echo

That from practical experience or just speculation?

Well, I know there is a limit to file size when shooting continuously. I don't know what that number is but I'm sure it's well under an hour long. An 8 gig card can only hold 22 minutes from my experience.

oh, I found this:

(1080p max. 12 minutes, VGA max. 24 mins per file)

So you wouldn't be able to shoot for an hour even if you wanted to.

echo · 3rd of February 2009 (Tue)

No, I am running 32Gb cards, shooting in 12 minute segments. All that stuff is well understood, the question is; In practice does the noise become an issue over extended use? Someone who has done this can hopefully answer.

I've shot 30 mins nearly and saw no change. The reason I'm asking is that I'm off to do a series in a few weeks in the States and will be working this way. If it's likely to be a major problem I'll have to grab another 5D2 to enable running in relay. I'd rather not have to do that!

Kagemaru · 3rd of February 2009 (Tue)

Hmmm.. don't know then. I would suggest submitting your question on dvino.net, they have a dedicated forum for the 5D and some very knowledgeable people there.

Psychobiker · 3rd of February 2009 (Tue)

Depends vastly on ambient temperature. I know in microelectronics, when you heat a semiconductor, the noise floor increases. All the sensor is is a multitude of semiconductors, I'd wager phototransistors?

2nd of February 2009 (Mon)	#1
echo Senior Member Join Date: Sep 2005 Location: A recording studio somewhere in the UK or USA Posts: 1,957	How long before 5D noise becomes an issue (on long shoots)? I am wondering if there is anyone who's been using the 5DmkII to record video for extended periods and have any comments about noise as the sensor warms up? I'm wondering if it's a real issue or not - say for 1 hour plus? Cheers! __________________ http://www.RecordProduction.com http://www.facebook.com/RecordProduction

3rd of February 2009 (Tue)	#2
Kagemaru Goldmember Join Date: Dec 2005 Posts: 2,634	Re: How long before 5D noise becomes an issue (on long shoots)? Well, I don't think you could record for an hour straight if that's what your asking.

3rd of February 2009 (Tue)	#5
echo Senior Member Join Date: Sep 2005 Location: A recording studio somewhere in the UK or USA Posts: 1,957	Re: How long before 5D noise becomes an issue (on long shoots)? No, I am running 32Gb cards, shooting in 12 minute segments. All that stuff is well understood, the question is; In practice does the noise become an issue over extended use? Someone who has done this can hopefully answer. I've shot 30 mins nearly and saw no change. The reason I'm asking is that I'm off to do a series in a few weeks in the States and will be working this way. If it's likely to be a major problem I'll have to grab another 5D2 to enable running in relay. I'd rather not have to do that! __________________ http://www.RecordProduction.com http://www.facebook.com/RecordProduction

3rd of February 2009 (Tue)	#6
Kagemaru Goldmember Join Date: Dec 2005 Posts: 2,634	Re: How long before 5D noise becomes an issue (on long shoots)? Hmmm.. don't know then. I would suggest submitting your question on dvino.net, they have a dedicated forum for the 5D and some very knowledgeable people there.

3rd of February 2009 (Tue)	#7
Psychobiker Senior Member Join Date: Oct 2007 Location: Montréal, QC Posts: 1,515 IMAGE EDITING OK	Re: How long before 5D noise becomes an issue (on long shoots)? Depends vastly on ambient temperature. I know in microelectronics, when you heat a semiconductor, the noise floor increases. All the sensor is is a multitude of semiconductors, I'd wager phototransistors?

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