Summary: The lens, as advertised, fit my camera. I was a bit surprised as I have an older, not so fancy Sealife. but the lens fit. And it does fisheye shots. There are black corners on the finished shot which can be cropped out if you remember this when setting the shot. the lens is quite heavy, so do recommend purchasing the holder attachment for the bottom of the camera housing.
Summary: I saw the previous comments and thought I'd add my two cent's worth. This is a good lens and provides for better photography, but check out Sea life's website before buying. This lens is NOT recommended for the DC1400 or DC800 cameras. The website says if you mount this lens on these cameras, the photos will vignette (darkening around the edges of the photos.) If you're looking to expand the photo angle, get the FISHEYE wide angle lens.
Summary: This lens is proprietary for Sealife cameras. It does increase your field of view by 50% and easily snaps on and off your Sealife camera underwater. This is critical, as you will get a blurry line of bubble if you don't release all the air between the lens and camera. On some of the Sealife models, there is a convenient `lens dock' where you can temporarily slide your lens into and keep it firmly attached.
Summary: It took me a while to figure out how to attach the lens to the camera. Once I did that I was surprised to see that pictures have rounded corners that require cropping. Maybe I'm not using the lens correctly but so far that's what I've discovered. I'm not an expert by any means.
Summary: It's a wide angle lens for Sealife cameras. It's well made, sturdy and does its job well. There are only two issues i have with it, 1. Sometimes when trying to capture sunbursts the inner lens reflects the writing on the camera aperture which is then ghosted onto the photos 2. the rubber ring around the outer lens doesn't seem to be all that well attached. It's still on, but seems to be coming loose. All in all it does exactly what it says on the tin.
Summary: If you are keen on underwater photography then this makes a great gimmick to buy for some really quality photographs. The only hassle is that the DC1000 has a quick option to point and shoot during setup but it is a lot more tricky when you have the add on of this wide angle lens.