Fisheye Lens Question

[snowman0384]

hello,

i am interested in purchasing a fisheye lens for my Fuji S5100. i was just curious about the numbers associated with the lenses. for example, the one i have my eye on says, ".22x Fisheye", and another one says, ".42x Fisheye". what is the difference the numbers cause? any help would be great!! thanks!

 

[Rob]

Multiply your widest aperture by this number and you'll see the new focal length. Basically it's the amount it changes the lens:

(assuming your widest setting on the camera is 28mm equivilent)

28mm x .22 = 6mm (very fisheye)
28mm x .42 = 12mm (not quite fisheye, more super-wide)

Does this help?

Rob