What's the difference between the fisheyes?

[Top]

Nikon has a 16mm fisheye

Canon has a 15mm fisheye

What's the difference between the two different focal lengths? Don't all fisheyes have a viewing angle of 180°?

[kiwi]

1mm

I dont believe all have 180 degree at all

[Tannin]

Don't all fisheyes have a viewing angle of 180°?

No. Never have had. Hell, my beautiful little Tokina 10-17 fish is a zoom!

[Watchamacallit]

Isn't the tokina 10-17mm the only zoom fisheye? How does it compare to the other "primes" (aka, say a Canon 15mm?)

I'm also kind of curious why the comparison between two different brand lens fisheyes?

[bigdazzler]

Nikon has a 16mm

Canon has a 15mm

What's the difference between the two different focal lengths?

1mm

I knew youd do it ..

[Tricky]

Isn't the tokina 10-17mm the only zoom fisheye? How does it compare to the other "primes" (aka, say a Canon 15mm?)

I'm also kind of curious why the comparison between two different brand lens fisheyes?

On a cropped sensor, the 15mm and 16mm primes would hardly be "fishy" at all, ie these prime fisheyes would only really give the intended effect on a full frame sensor. The Tokina 10-17 is intended for a cropped sensor and gives a "full-frame equivalent" of 16mm. At the 10mm end it is very fishy; at 17mm, it is almost rectilinear.

[Watchamacallit]

On a cropped sensor, the 15mm and 16mm primes would hardly be "fishy" at all, ie these prime fisheyes would only really give the intended effect on a full frame sensor. The Tokina 10-17 is intended for a cropped sensor and gives a "full-frame equivalent" of 16mm. At the 10mm end it is very fishy; at 17mm, it is almost rectilinear.

I had a squiz through Tannin's thread on the 10-17mm and noticed what you mentioned. Haven't really looked at fisheyes myself (no current need for the effect) but something I'll keep in mind for the future.

[soulman]

There is a good article on fisheye lenses on Wikipedia. It explains that early fisheyes were circular and all 180˚.