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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 26 Aug 2011 (Friday) 05:19
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Sigma 8-16MM vs Sigma 10MM fisheye?

 
BaghdadFred
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Aug 26, 2011 05:19 |  #1

I am taking indoor shots with my ultra wide Sigma 8-16MM. At 8MM things are sharp but close by items are of course bring on a lot distortion same as would a fisheye lens. The 8-16MM is NOT billed as fisheye lens.

I am also interested in the 10MM Sigma fisheye lens. My only concern is that the type of creative distorted images you would get with this lens would look nearly identical to the the ones I can get on my Sigma at 8MM.

Not concerned about the distortion on either. Just wondering if the 10MM fisheye will give me any significant difference in appearance.

Anyone care to comment?


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mike ­ cabilangan
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Aug 26, 2011 16:14 |  #2

for one, the fisheye would give you a lot wider view even compared to the 8mm.

and the distortion on the fisheye would definitely give a different appearance.


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The ­ Devil
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Aug 26, 2011 17:02 |  #3

The 8-16 isn't billed as a fisheye, because it isn't one. Fisheyes distort FAR more than it does.
And no, a 10mm lens wont give a wider view than a 8mm does. That just doesn't make sense.
Keep using your 8-16 and use PS to get rid of the distortions, shouldn't be that hard to fix.
Also, give us a sample of the "fisheye" distortion you're seeing.


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TheRisingArms
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Aug 26, 2011 18:03 |  #4

The Devil wrote in post #13005539 (external link)
And no, a 10mm lens wont give a wider view than a 8mm does. That just doesn't make sense.

Actually no, a 10mm fisheye gives an 180 degree field of view diagonally, whereas a 8mm rectillinear lens gives much less than that.


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mike ­ cabilangan
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Aug 27, 2011 09:22 |  #5

TheRisingArms wrote in post #13005745 (external link)
Actually no, a 10mm fisheye gives an 180 degree field of view diagonally, whereas a 8mm rectillinear lens gives much less than that.

and the 8-16 only produces 114.5° diagonally at it's widest for 1.5 crops ... should be less than that for 1.6 crops like canon.

the 10mm fisheye does produce 180° diagonally, but only for Nikon 1.5 crops. for canon it's 167° (still a lot wider than ANY mainstream UWA lens either on full frame or crop)


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The ­ Devil
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Aug 27, 2011 14:20 |  #6

I see... that's interesting. Guess one learns something new every day.
In any case, I wouldn't use a fisheye to take interior shots. Distorts way too much. But if you're fine with that, I guess you could effectively use one.
I'd imagine the distortion you're seeing is the typical UWA distortion not the fisheye distortion. Sample images would help.


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Sigma 8-16MM vs Sigma 10MM fisheye?
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