English to Russian Tech/Engineering Photography/Imaging (& Graphic Arts)

This IS version is tripod sensing to prevent feedback loops between the IS sensor and stabilizer motor vibrations. The manual recommends turning IS off when tripod-mounting the lens (to save battery life) or when panning (panning mode IS is not available). Leave IS on when handholding or shooting from a monopod. The IS implementation on this lens is very well behaved - it is quiet and does not cause the image to jump when starting up.