Canon MarkII + PTGui + which lens for full 360 panorama

[mar lee]

I have a full frame canon markII . And the PTGui is coming to me now.

Which lens should I buy?

Canon 15mm(180 degree) or Sigma 8mm(180 degree) ?

I prefer to buy Canon. But Can I use the Canon 15mm for full 360
panorama images?

I saw many people use 8mm lens. Which one should I buy?

Hope I get an answer.

[Roger D Williams]

I use Nikon lenses, not Canon, but I assume they are of very similar quality. The Sigma 8mm I have is again of very similar quality. The main difference you will find is that the 15mm lens will require more shots to create a given panorama, perhaps 6 around plus a zenith and/or nadir shot. The Sigma will allow you to get away with four, or possibly even three (but better four for various reasons). The advantage of the 15mm lens is that the final panorama can have a higher pixel count, if you need it. If your panoramas are designed for viewing on the web, this difference is probably not a decisive factor.

Roger W.

[mar lee]

Thank you Roger.

It is a very helpful information.

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[Joergen Geerds]

The 8mm on a FF camera like the 5dm2 is a total waste of time and resources. all you get this tiny circle, and the resulting pano is maybe 6000x3000px (from 3 shots). I would rather look into the the canon 8-15 f4 (usable from 10-15mm), the tokina 10-17 (shaved edition), the (shaved) nikon 10.5 with adaptor or just stick with the canon 15mm.

joergen

newyorkpanorama.com

PS: this question would be better asked in other forums, since it doesn't really relate to ptgui (which basically works with any lens and focal length)

[mar lee]

I was still getting into the web to see the image difference from the two lenses. 

Oh I just checked your site. Congratulation for your show.

The Time Squre, is it around 15mm?

Thanks Joergen.

--

[Erik Krause]

Am 01.09.2011 05:55, schrieb Joergen Geerds:
> The 8mm on a FF camera like the 5dm2 is a total waste of time and
> resources. all you get this tiny circle, and the resulting pano is maybe
> 6000x3000px (from 3 shots). I would rather look into the the canon 8-15
> f4 (usable from 10-15mm), the tokina 10-17 (shaved edition), the
> (shaved) nikon 10.5 with adaptor or just stick with the canon 15mm.

If your budget is low there are a couple of alternatives: The Zenitar
16mm fisheye performs well if stopped down. You can try the Samyang 8mm
fisheye, which is very good and gives a slightly larger circle than the
Sigma one (more like a 10mm):
http://michel.thoby.free.fr/SAMYANG/Early%20test%20report.html
You can even use a 14mm rectilinear lens:
http://tinyurl.com/6ft8bfc
http://tinyurl.com/2u2judu

--
Erik Krause
http://www.erik-krause.de

[Ed]

Good Morning Mar Lee:
I have the Canon 15mm f2.8 fisheye and use it regularly on a EOS-1Ds
Mk2 to capture files for panoramas. I shoot 6-arounds + up & down and
PTGui blends these files masterfully most of the time. Love the lens
and recommend it highly. Might even be able to get one at a discount
now the Canon has abandoned it in favor of the "fisheye zoom"
mentioned elsewhere in this discussion. Whatever lens you do decide
on, I highly recommend downloading a rez chart and then shoot tests to
find your lens's best aperture. I was surprised to discover that f8 on
my lens is much sharper than f11 or f16. Your mileage may vary.

Ed

[mar lee]

Thanks. Ed.

I saw many people on Youtube was using 8mm for 360 panorama.

But for me, circle 8mm lens is only for 360 panorama images for business.

The one thing I don't like in the 360 panorama is that the images on the corner becomes exaggerated.

Is that a no choice? I think it's because of using circular fisheye lens.

Now I'm in btwn 8-15mm or just 15mm of Canon.

 The Nodal Ninja MKII with PTGui is on the way to me.

Thank you for your advise.

[Erik Krause]

Am 01.09.2011 18:47, schrieb mar lee:
> I saw many people on Youtube was using 8mm for 360 panorama.

A 8mm fisheye lens on an APS-C sized sensor gives about the same
coverage like a 10mm fisheye on a full frame camera. 10mm on APS-C is
roughly equivalent to 15mm on full frame.

> The one thing I don't like in the 360 panorama is that the images on the corner becomes exaggerated.
> Is that a no choice? I think it's because of using circular fisheye lens.

If you mean the panorama in the viewer: This is normal perspective
distortion and has nothing to do with the used lens. If it gets ugly you
have zoomed out too far.