Shadow

My DA16-45 lens has recently begun showing a half-moon shadow at the bottom of photos when at the 16 & 18 magnification & then gradually becomes smaller & fainter until it disappears at 28. There are no issues with my other lenses so it must be something with this particular one.
Has anyone encountered this before or have any idea what it might be?
This is a photo - see middle bottom link
Thanks.

Looks like the lens hood is restricting the on board flash and causing a shadow. (presuming the cameras flash was used)

Regards

George

I agree with George. You could try avoiding it by taking off the lenshood, or it could be fixed altogether by using a flashgun in the hotshoe (i.e. a bit more elevated than the onboard flash) or using off-camera flash or alternative lighting. As an issue it is most pronounced at wide angles (hence you've seen it at 16 and 18mm), as the wide angle of view means that those areas where the flashlight is interrupted by the protruding lens are in the shot - it shouldn't be such an issue as you zoom onto longer focal lengths.

Regards

It's mentioned in the little instruction book that sometimes comes with the lenses. The 16-45mm lens hood will cause vignetting with the built in flash at wider focal lengths.

With the 16-45 it is the lens barrel itself from about 30mm and wider, not just the hood that blocks the on-board flash. Its the only downside of this otherwise brilliant lens that I have found.