Sigma 150-600 OS - Questions for users.

gramps

gramps

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I confess to being a bit puzzled by the OS (image stabilising system) on my Sigma 150-600 Sport, on my Nikon 200-500 there is a noticeable visual and light audible response to the VR kicking in and dropping out.
The Sigma lens recently went to Sigma for re-calibration but while they had it they fitted a new OS system, obviously they found the original to be faulty.
When it came back I didn't notice any difference in the operation of the OS to when it went away if I'm honest but a few days later I noticed a very responsive 'clunk', when the OS dropped out after the AF button was released. This change was a bit puzzling but I thought no more of it until a few days later when the 'clunk' disappeared!
I now find myself thinking, was it working okay when I got it back from Sigma, or was it working only when I heard the 'clunk' and so is it now not working again ... or was the 'clunk' an indication of a fault?

So I guess I am asking a couple of questions of those who have had experience of using the Sigma 150-600 Sport or Contemporary.

1. What experience, visual or audible do/did you get when the OS is activated with AF?

2. When using customised settings C1 or C2, what position did you use the 'OS Switch' in (Off, 1 or 2)?

3. Does using C1 or C2 over-ride the 'OS Switch', or vice versa, or do they work together in some way?

I have the Sigma manual but it does not seem to address any of the questions I have.
 
I can't comment on C switch as I don't have the dock, but I can confirm my OS is silent and no visual clues in modes OS1 and OS2.
 
Os on mine is silent also im pretty sure you can customise so the image freezes but im away from mine but will update when home
 
Only had the C version but without changing the setting with the dock i found it difficult to see any change, making the dock adjustment made it obvious, cant remember about a clunck
 
Update from previous post
When OS in standard mode (no customization) there is a barely noticeable shift of frame down and to the left when OS disengages.
When C1 set to moderate there is a more noticeable shift in frame down and to left when OS disengages
When C2 set to dynamic there is a very noticeable shift down and to the left when OS disengages
I haven't noticed any shift of frame when OS engages in any setting.
There is however a noise not a clunk when OS engages but its so quiet I only heard it because I was indoors and listening for it.
This was on a C version
I hope this helps
 
Wandering star said:
Update from previous post
When OS in standard mode (no customization) there is a barely noticeable shift of frame down and to the left when OS disengages.
When C1 set to moderate there is a more noticeable shift in frame down and to left when OS disengages
When C2 set to dynamic there is a very noticeable shift down and to the left when OS disengages
I haven't noticed any shift of frame when OS engages in any setting.
There is however a noise not a clunk when OS engages but its so quiet I only heard it because I was indoors and listening for it.
This was on a C version
I hope this helps
Click to expand...
Many thanks Gary, I'll do some more thorough checks. (y)
 
gramps said:
3. Does using C1 or C2 over-ride the 'OS Switch', or vice versa, or do they work together in some way?
Click to expand...
The OFF/C1/C2 modes modify the OS if set to do so with the dock. I.e. I have my 60-600S set to C1- Fast AF/Dynamic OS; C2- Smooth AF/Moderate OS; and OFF returns everything to standard/defaults. When OS is set to OFF the Custom switch only affects the AF mode. With OS set to mode 1 (general) I have the three OS mode options available via the custom settings switch, and the same three options when OS is set to mode 2 (linear).
 
sk66 said:
When OS is set to OFF the Custom switch only affects the AF mode. With OS set to mode 1 (general) I have the three OS mode options available via the custom settings switch, and the same three options when OS is set to mode 2 (linear).
Click to expand...

That's brilliant, thanks Steven. :)
 
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