03-13-2014, 01:09 AM
Handholding the camera, turning on the VC, and shooting a still object at 1/25 second (about 3-stop slower than 1/180 sec) and see if you can get a sharp image. If it is hard to get a sharp image, then I would say the VC doesn't work (for the 90mm lens).
The still object should not be too close to the camera, other wise VC won't be effective. A 5-10m distance would be all right for the 90mm lens, I think.
The still object should not be too close to the camera, other wise VC won't be effective. A 5-10m distance would be all right for the 90mm lens, I think.