I see these choices but not sure what FL we get 70d being a 1.5x crop body
The 1.6x multiplier still applies to ultra wide angle lenses, both rectilinear and fisheye (though due to variances in design, the formula is only approximate).
1) Sigma 15mm f/2.8 EX DG Diagonal Fisheye Lens , about $600/
so would we get 22mm in 70d, then it wont be Fisheye at 22 mm
You'd get about 24mm. It'd still be classified as a fisheye though (due to its design, not its FOV).
2)Sigma 10mm f/2.8 EX DC HSM Fisheye Lens
This one, says it is designed for APSC, so should be 10mm
Means that it will only fit on a crop-sensor camera (not full frame). FOV equiv is about 16mm.
3) Canon EF 15mm f/2.8 Fisheye Lens - ONLY used for about $600-$750
same 22mm and fisheye ?
Use the multiplier here too.
3) Rokinon 8mm F2.8 but MF
Good bang for the buck, but it's bare bones. It's f/3.5 BTW. Get the updated lens with the removable hood (not the older model).
I have the aforementioned Sigma 10mm f/2.8 EX DC HSM Fisheye, and it is an excellent lens. AF is superb (70D), and it's very sharp wide open. Here are a couple of "fun" images...
[IMG width="400px" alt="Click "Original" to view larger images..."]
http://www.pbase.com/jekyll_and_hyde/image/155181644/original.jpg[/IMG]
Click "Original" to view larger images...
These are just to illustrate the IQ and AF potential. Do love this lens.
But you have to make sure you want the fisheye "look" for your group shots, scenics, architectural, etc. Otherwise mebbe look at the new 10-18 STM (rectilinear).
Happy hunting!
R2
--
Good judgment comes from experience.
Experience comes from bad judgment.
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