This is a modified lens, where I added a rear lens element to a fisheye lens that wasn't very strong, to increase the fisheye effect. It's not as strong as an Opteka, but I used it on a VX1000 before. (The second photo is an example of its use on the VX1000 I used to own.) Please understand that this is a used, modified item, so there may be dust or minor scratches (please check the condition in the photos). You can use it on a 72mm camera by removing the 52 step-up ring, but it will vignette quite a bit in 16:9, so it might work in 4:3... maybe... It's a quirky lens that I modified myself, but I'm not using it, so if anyone is interested, please buy it. No claims and no returns, please.