[miro]

[quote name='Brightcolours' timestamp='1298044328' post='6227']

It is normal to NOT take photos with VC/IS enabled on tripods. Unless the lens has tripod detection that will turn off the image stabilization, you will get nasty effects from the VC feeding back to itself, and if I understand you correctly, this is your problem.



So.. VC is only for handheld. Monopod might work, try. Handheld with you leaning against something should be ok. Lens on top of something, also turn off VC.



You just only need VC when handheld, and then only when the exposuretimes get to be too long. On tripod, turn it off.

[/quote]





Thanks for the quick response.

My experiance at F=300mm is

1. handheld images bellow s=1/320sec are sharper with VC-off.

2. At monopod, backback or holded agians three the border is S=1/100sec.

3. For tripod I have NEVER EVER tried to use VC. I know that theoretical is impossible to make high performance handhold VC that can work on stable tripod. I can prove that with mathematical equation.



Do you know what is the rule to switch off the VC?

Is there some rule like 1/F or 1/(2*F)?



Greetings

Miro