Add-On Fisheye lens

[Raymond TSE]

Dear all,

There have been some previous talk over DIY Sky Camera.

I have a Sony IP colour webcam with built-in F1.4 lens (37mm filter ring) and autofocus but the FOV is about 90 degree only.

Is fisheye add-on lens a lens reducer (with greater FOV) ?

Will the aperture be improved to wider than F1.4 ?

Comments and feedbacks are welcome.

Raymond Tse

[社長]

我之前用的Nikon Fisheye convertor，出射是平衡光線，即後面要加一個以無限遠對焦的小鏡頭才成：

viewtopic.php?f=20&t=1389&start=0

後來發現還是Fujinon的魚眼鏡好用些，質量又好些，所以剛9月初去西藏時也換了。