I love the lens so far. Great and sharp picture. I like the sound of the focus too. LOL Anyways. I was taking a picture point upwards fully zoom and it started to unzoom itself. The lens can hold itself when its fully zoom in a horizontal stance, but when its in a vertical stance the lens will zoom but inverts itself. It cant hold itself at full zoom in the vertical position. Is this normal?

All three shot with the Sigma 17-70 DC, Handheld!



