Stabilizer Noise at DVinfo.net

Harry Simpson · August 29th, 2010, 08:57 PM

I usually shoot video with my 24-105 F4L but shot some acoustic music with my 70-200 F4L. Even though it was on a tripod I didn't turn off the stabilizer (IS) for the shoot. I'd literally never heard noise from it before in my videos. I used a RODE SVM mic attached to the hotshoe of the camera.

Is the 70-200 F4L notorious for loud IS noise or perhaps my lens needs repair. I can turn on IS on the 24-105 and barely hear it but I can definitely hear it on the 70-200.

Second part of my question is how the heck I get that noise out of my audio - I have Sony Vegas Studio 10 HD with the NewBlue sound filters.....

TIA
Harry

Andy Wilkinson · August 30th, 2010, 02:39 AM

Canon 70-200 F4 IS is a terrific lens but when I first got mine I thought there was something wrong with it (as the IS was so much louder than my Canon 17-55 F2.8 IS, which is basically whisper quiet). I posted about it on here a while back, see post 4 onwards in this thread for details.

http://www.dvinfo.net/forum/canon-eo...ilization.html

A web search I did at the time found lots of posts (mostly on photographic sites) about the noise of this lens compared to a few other Canon lenses so I came to the conclusion that mine is "normal" and have since grown to love this lens for it's optics (for stills and video). I must say I'm surprised you've never noticed the IS noise before but I suspect yours is just fine - maybe it was doing overtime because you had it on a tripod without switching it off, or the music was much quieter/further away from your on camera mic than you usually have the luxury of so your Rode SVM and the 5DMkIIs (AGC on, or ML hacked?) worked overtime.

As far as removing the IS noise you'll have some big issues unless (and I suspect I know the answer...) you did the much recommended double system sound (DSS) and have an audio track you can sync to. In Sountrack Pro, (I'm FCS/Mac mostly, just using Vegas 9/Win 7 for other stuff) I sometimes get successful results with subtracting room tone/aircon noise from spoken dialogue but I've never tried it with the more "grinding gears" noise my 70-200 F4 IS makes. Others may have suggestions...maybe post a specific question on the well supported All Things Audio section as some of the sound gurus that read that bit might be able to help you.

Good luck - and consider getting yourself a digital audio recorder for DSS (ideally off camera and up close and personal to the music, if possible) next time!

Harry Simpson · August 30th, 2010, 05:30 AM

Thanks Andy

I think the lower noise of the 24-105 gave me a false sense of it's ok since I'm using the RODE SVM.
I now know better the hard way. Lesson well learned. If I could get the mic farther off the cam....think i saw someone mention a bracket that aided. but yes the RODE SVM actually suggests that its a fairly short range mic though i've used it for over a year in larger spaces but usually for amped louder music.

I'll post this over in the Audio group...

thanks

Doug Bailey · August 31st, 2010, 05:04 PM

Hi Harry,
I pick up some noise from the IS on an EF100-400 lens and also have a camera mic, so I know the problem. Now I switch the IS off when using a tripod.

I shoot nature, but the problem is the same. I found an Audition tutorial on Youtube and downloaded the trial version. You find an area of (in my case) a bid calling, quiet and calling again. Using Audition I was able to isolate and remove the traffic and IS noise fairly easily. Had to buy Soundbooth though, as Audition is not 64 bit. There are other good standalone programs out there for this sort of problem.

Hope this helps and best of luck.

Regards,
Doug.

August 29th, 2010, 08:57 PM	#1
Harry Simpson Major Player Join Date: Aug 2009 Location: Nashville, TN. Posts: 581	Stabilizer Noise I usually shoot video with my 24-105 F4L but shot some acoustic music with my 70-200 F4L. Even though it was on a tripod I didn't turn off the stabilizer (IS) for the shoot. I'd literally never heard noise from it before in my videos. I used a RODE SVM mic attached to the hotshoe of the camera. Is the 70-200 F4L notorious for loud IS noise or perhaps my lens needs repair. I can turn on IS on the 24-105 and barely hear it but I can definitely hear it on the 70-200. Second part of my question is how the heck I get that noise out of my audio - I have Sony Vegas Studio 10 HD with the NewBlue sound filters..... TIA Harry __________________ Nashville TN using Canon 5D MK3, Canon 550D, RODE SVM mic, 70-200 f2.8L II IS, 24-105 f4L IS, 50 and 85 f/1.8, Vegas Pro 11, Zoom H4n, Blackbird, Lilliput Monitor, Lightroom

August 30th, 2010, 02:39 AM	#2
Andy Wilkinson Inner Circle Join Date: Sep 2007 Location: Cambridge UK Posts: 2,853	Canon 70-200 F4 IS is a terrific lens but when I first got mine I thought there was something wrong with it (as the IS was so much louder than my Canon 17-55 F2.8 IS, which is basically whisper quiet). I posted about it on here a while back, see post 4 onwards in this thread for details. http://www.dvinfo.net/forum/canon-eo...ilization.html A web search I did at the time found lots of posts (mostly on photographic sites) about the noise of this lens compared to a few other Canon lenses so I came to the conclusion that mine is "normal" and have since grown to love this lens for it's optics (for stills and video). I must say I'm surprised you've never noticed the IS noise before but I suspect yours is just fine - maybe it was doing overtime because you had it on a tripod without switching it off, or the music was much quieter/further away from your on camera mic than you usually have the luxury of so your Rode SVM and the 5DMkIIs (AGC on, or ML hacked?) worked overtime. As far as removing the IS noise you'll have some big issues unless (and I suspect I know the answer...) you did the much recommended double system sound (DSS) and have an audio track you can sync to. In Sountrack Pro, (I'm FCS/Mac mostly, just using Vegas 9/Win 7 for other stuff) I sometimes get successful results with subtracting room tone/aircon noise from spoken dialogue but I've never tried it with the more "grinding gears" noise my 70-200 F4 IS makes. Others may have suggestions...maybe post a specific question on the well supported All Things Audio section as some of the sound gurus that read that bit might be able to help you. Good luck - and consider getting yourself a digital audio recorder for DSS (ideally off camera and up close and personal to the music, if possible) next time! __________________ Andy K Wilkinson - https://www.shootingimage.co.uk Cambridge (UK) Corporate Video Production

August 30th, 2010, 05:30 AM	#3
Harry Simpson Major Player Join Date: Aug 2009 Location: Nashville, TN. Posts: 581	Thanks Andy I think the lower noise of the 24-105 gave me a false sense of it's ok since I'm using the RODE SVM. I now know better the hard way. Lesson well learned. If I could get the mic farther off the cam....think i saw someone mention a bracket that aided. but yes the RODE SVM actually suggests that its a fairly short range mic though i've used it for over a year in larger spaces but usually for amped louder music. I'll post this over in the Audio group... thanks __________________ Nashville TN using Canon 5D MK3, Canon 550D, RODE SVM mic, 70-200 f2.8L II IS, 24-105 f4L IS, 50 and 85 f/1.8, Vegas Pro 11, Zoom H4n, Blackbird, Lilliput Monitor, Lightroom

August 31st, 2010, 05:04 PM	#4
Doug Bailey Regular Crew Join Date: Mar 2010 Location: Jupiter, FL Posts: 164	Hi Harry, I pick up some noise from the IS on an EF100-400 lens and also have a camera mic, so I know the problem. Now I switch the IS off when using a tripod. I shoot nature, but the problem is the same. I found an Audition tutorial on Youtube and downloaded the trial version. You find an area of (in my case) a bid calling, quiet and calling again. Using Audition I was able to isolate and remove the traffic and IS noise fairly easily. Had to buy Soundbooth though, as Audition is not 64 bit. There are other good standalone programs out there for this sort of problem. Hope this helps and best of luck. Regards, Doug.