The lens is stuck. It feels like it is locked, yet the release button doesn't release it. It will not turn, and will not function. I came to Amazon to ask for product support and find warranty information, as it should still be under the manufacturer's warranty.

The Zuiko 9-18mm provides dramatic ultra-wide angle performance at an affordable price. The lens is compact, light and seems sturdy. Images are sharp with vivid colors.

Great at capturing wide angle images, landscapes, and even portraits with somewhat unusual angles; It is very lightweight and portable and works well with the E-520

Perhaps not quite as sharp as some of the higher end lenses but more than acceptable for the price; Images tend to show barrell distortion at the widest angle; Sometimes difficult to use with a flash indoors at the widest end as shadows caused by on camera flash are visible.

If you like wideangles, go for it, you won't regret it.

small (unbelievably so); flexible; good quality and good picture quality

No lens hood; slight chromatic aberration; minimum aperture

Very nice and compact wide-angle, but the price, moderate f-stop and focus distance limits this to specialty users who need wide-angle for scenery or architectural shots outdoor during the day.

Easily Interchangeable; Fast / accurate auto-focus; Strong Construction

Poor in Low Light

I purchased another copy of this lens in 2011 & had it for about a year when it was stolen when I lived in Uruguay. I love this lens! If you like wide angle lenses & have a micro 4/3 camera you will not be disappointed. I don't know why I waited so long to replace it.

Yes, I would recommend this to a friend

Lightweight

Poor in Low Light; Slow Focus

Under no circumstances buy this! I was tempted by a "cashback" offer which requires a receipt. Needless to say, no receipt was included and in the weeks that have followed, none has been forthcoming. If the offer ever existed, I assume the receipt has been stolen.

I have just purchased this product and have carried out some test shots. I am delighted with the results. The sharpness is incredible and the colour rendition is very good.I have attached it to my Olympus Pen E-P3 and it matches up perfectly to the camera.

Easily Interchangeable; Lightweight; Quick Focus; Sharp Focus

I purchased this lens to round out my selection of lenses. For the value, this lens has provided me a great option for those situation where a wide angle lens is needed to capture that image and include the background or to capture that up close image yet

Following the micro 4/3 philosophy, is a lightweight wideangle zoom, an angle of view comparable with a 18-36 equivalent in 135 mm or full frame. The cost difference is much wider than the quality diference, comparing with other micro 4/3 wide zoom as Panasonic too.