[咨询]广角湿镜哪家强？求推荐

最近想给自己的RX100II配个广角镜，看老外的帖子大概就是以下几个镜头，
1.UFL-165AD/AD接口，需AD-M67转接环/最大角度165度
2.UWL-04/M52接口，需M52-M67转接环/0.42放大倍率--这个相当于大概多少度呢？
3.INON UWL-H100 28M67/M67接口，无需转接环/单镜最大角度100度，配合DOME可以到145度
4.INON UWL-100 28AD/28AD接口，需转接环/单镜最大角度100度，配合DOME后可达到150度
价格上1，2大概在3K左右，3和4也是要3K左右不过加DOME还要3K多。
不过还有些疑问麻烦知道的潜友解答下。
以上几个镜头不知道在28端是否会有暗角？
1和2有什么差别。。。
相比于1和2，3和4是否值得另外加3000块钱？另外对于AD接口转M67的转接环，哪里能买到？

Inon UFL-165 AD Fisheye Lens
This wet lens is your best choice for an underwater wide-angle wet lens, but only works with limited cameras that are 35mm at their widest, for example the Canon A570 or Canon SD990. The UFL-165 is a fisheye lens that will give you up to a 165 degree field of view. You can practically focus on the dome port of this lens. This lens is removable underwater, which means you can shoot macro and wide-angle on the same dive if you have the appropriate wet lenses. Many underwater photographers greatly enjoy this flexibility.

Inon UFL-165AD Fisheye Lens

Many photographers choose their camera based on whether it will accept this lens or not. This lens is the widest out there, and can take great wide-angle photos, allowing the underwater photographer to approach the subject very closely. Unfortunately, many recent point and shoot cameras will not work with this lens because they are too wide, and this lens is optimized to work with cameras that are 35mm wide, such as the Canon A570, Fuji F30, Canon SD990, Oly SP350, Fuji E900.

This lens only works with housings with an AD bayonet mount, hence the lens is called the UFL-165 AD fisheye lens. It does not work with the 28AD mount base.
最大只支持到35MM，看来可以放弃了