Announcement

Collapse
No announcement yet.
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Sigma 150-600 stability on the OS element without power on long exposures for astro

    The Optical Stabilization (OS) relies on an internal optic element that is moved with a motor to adjust for handheld motion. If there is no power to the lens, is that OS optical element able to shift or move? How is it held in place with no power? It seems I am getting some very small movement- 10 px/min when the mount is guiding/tracking the lens. The drift on 5-30 min exposures is a problem.

    #2
    Following you!

    Comment

    Working...
    X