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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 05 Mar 2015 (Thursday) 11:53
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Sigma EF 24-105 f/4 OSS weird buzzing noise on Canon 5D mk2

 
Faroutandup
Hatchling
9 posts
Joined Nov 2011
Location: Norway
Post edited over 6 years ago by Faroutandup.
     
Mar 05, 2015 11:53 |  #1

I have the Sigma EF mount 24-105 and i use it on a Metabones adapter on Sony FS700 videocamera. For 4K video, its amazingly sharp, and i am very pleased.

While my Canon EF 24-105 which i use on my 5D for stills was at service, i tried the Sigma 24-105 on the Canon 5D and that gave me some weird experiences.

Firstly, i did some photos today and all of them are seriously back focused. Lucky it was just sea landscapes with boats and islands, and on each of my motifs i did a f/8-11 front focus to play around with the focus a little. Only on the photos where i front focused on the sea did my motifs come in proper focus. When i got home i tested this issue some more, but found no more back focusing. Now focus is spot on.

Now, it does belong to the story that when i inserted the memory card back into my 5D with the Sigma mounted, it would not boot up. Instead, the lens made this weird humming noise. Seriously loud too. Much louder and smoother noise than the OSS, or even the auto focus motor and system. I flipped the 5D off again, and the noise went away. Back on, and its normal for a few seconds, but soon starts to buzz again. I put on live view to see if its OSS or something, but no. With autofocus and live view on, its perfectly silent and working great.

I just got my Canon 24-105 back, so i put that on the 5D. No sounds. Works like a charm. But the IS do sounds alot noisier than the OSS!

Has anyone else had this sort of VRRRRRR sound from their Sigma 24-105 Art lenses? Ive sent an email to the dealership asking for help, and at the same time ordered the Sigma USB Dock since i also own the Art 35 and Art 50. Maybe its a firmware issue with the 5D mk2, maybe not.




  
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felixshmak
Mostly Lurking
17 posts
Joined Jun 2013
Location: Hong Kong SAR
     
Mar 06, 2015 23:01 |  #2

Is that the image stabilizor sound?




  
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Faroutandup
THREAD ­ STARTER
Hatchling
9 posts
Joined Nov 2011
Location: Norway
Post edited over 6 years ago by Faroutandup.
     
Mar 12, 2015 05:10 as a reply to  @ felixshmak's post |  #3

No, the IS (OSS) sound is barely noticable.

This is more like the servo motor on a RC plane!

Incredibly weird.

Im also annoyed that most of my pictures from that day is backfocused to the extreme extent.

I have bought the Sigma USB dock and i have updated all my Sigma Art lenses. Hopefully Sigma has some bug fixes in the 1.01 firmware. They do not include bugfixes in their firmware notes however, so who knows. At least the 6D + GPS = bug is fixed in the 1.01 firmware.




  
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Calvinator5d3
Hatchling
1 post
Joined Apr 2016
     
Apr 01, 2016 23:54 as a reply to  @ Faroutandup's post |  #4

I have similar noises coming out of the back of my 5d-3. I also have a pretty serious back focusing issue. I ran some tests with a 2' ruler, focusing at 12". 11 was fuzzy as hell, 13 wasn't sharp but wasn't NEARLY as fuzzy as 11... not scientific but not 'nuthin' either. I'm considering returning the lens, this is a little too weird for my tastes. I've had my camera since they came out, it occupies the pillow next to me; I love it.
What were the results of the USB dock if you don't mind my asking? Have adjustments been made to the firmware and are you satisfied with your Sigma equipment overall (now.)
Thanks




  
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Sigma EF 24-105 f/4 OSS weird buzzing noise on Canon 5D mk2
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
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