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Thread: Nikon D70s + Sigma 8mm Fisheye + Bracketing

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vinuncio

Posts: 2
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Registered: 29 Sep 2009
Nikon D70s + Sigma 8mm Fisheye + Bracketing
Posted: 29 Sep 2009 at 10:08 GMT
Hi all, I'm new here.
Anyone knows how to setup a Nikon D70s for shooting full spherical HDR panos using Sigma 8mm lens? I would like to let camera do as much things as possible in auto. thank you.
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badders

Posts: 384
Location: East Kilbride, United Kingdom
Registered: 5 Dec 2007
Re: Nikon D70s + Sigma 8mm Fisheye + Bracketing
Posted: 29 Sep 2009 at 12:52 GMT
Step 1: Turn OFF anything AUTO!...

1. Set Camera to MANUAL MODE
2. Set Aperture to f/8
3. Turn OFF Auto-focus
4. Set Lens focus to 1m
5. Set ISO to 200
6. Set White Balance according to conditions
7. Adjust Shutter speed to suit most prominent feature in scene

Take all shots for this panorama at same settings.

Andrew Baddeley
www.360tacticalvr.com
Immersive Imaging Solutions
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vinuncio

Posts: 2
Location:
Registered: 29 Sep 2009
Re: Nikon D70s + Sigma 8mm Fisheye + Bracketing
Posted: 29 Sep 2009 at 15:05 GMT
thank you for the quick answer.
So I can't use the Auto-focus property of my lens?
Is not possible to use Nikon's Auto Multi Program (P)?
thank you again
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Doug Aurand

Posts: 3282
Location: Albuquerque, NM, United States
Registered: 2 Jan 2008
Re: Nikon D70s + Sigma 8mm Fisheye + Bracketing
Posted: 29 Sep 2009 at 17:28 GMT
J
At F8 or higher your Depth of Field/Focus will be so deep that the Auto Focus may screw it up if there is something closer than the rest of the photo. Manual at 1m is pretty much the accepted setting for a Sigma 8mm

If you're shooting indoor scenes, I suggest getting and ExpoDisc. I'm using one for a series of hotel virtual tours shoots and its great how it helps get the White Balance set up in low lighting and with mixed lite sources

Doug Aurand
Albuquerque, NM
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virts_ru

Posts: 13
Location: Novosibirsk, Russian Federation
Registered: 22 Oct 2009
Re: Nikon D70s + Sigma 8mm Fisheye + Bracketing
Posted: 22 Oct 2009 at 16:16 GMT
Why the focus set at 1 m, and not to infinity? Explain!?



spasibo!
www.virts.ru
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John Houghton

Posts: 3487
Location: Hitchin, United Kingdom
Registered: 17 Jan 2005
Re: Nikon D70s + Sigma 8mm Fisheye + Bracketing
Posted: 22 Oct 2009 at 16:29 GMT

virts_ru said:

Why the focus set at 1 m, and not to infinity? Explain!?

You get a greater depth of field when you focus on 1m. See this article: www.nikonians.org/html/resources/guides/dof/hyper... . There's a link to a useful hyperfocal distance calculator.

John
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virts_ru

Posts: 13
Location: Novosibirsk, Russian Federation
Registered: 22 Oct 2009
Re: Nikon D70s + Sigma 8mm Fisheye + Bracketing
Posted: 22 Oct 2009 at 16:36 GMT
Thank you! So I'm very much mistaken, you will need to review and alter their work ...

"live and learn"
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badders

Posts: 384
Location: East Kilbride, United Kingdom
Registered: 5 Dec 2007
Re: Nikon D70s + Sigma 8mm Fisheye + Bracketing
Posted: 22 Oct 2009 at 16:48 GMT
I think we're being "botted"...
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Wayne

Posts: 97
Location: Derbyshire, United Kingdom
Registered: 5 May 2004
Re: Nikon D70s + Sigma 8mm Fisheye + Bracketing
Posted: 22 Oct 2009 at 23:30 GMT
botted?
I will try the new "one meter rule" I must admit that my pans were starting to look o.o.f. on infinity. will use 1M
JH saves the day...again!
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Hans Nyberg

Posts: 2791
Location: Denmark
Registered: 28 Aug 2005
Re: Nikon D70s + Sigma 8mm Fisheye + Bracketing
Posted: 23 Oct 2009 at 8:14 GMT

Wayne said:

botted?
I will try the new "one meter rule" I must admit that my pans were starting to look o.o.f. on infinity. will use 1M
JH saves the day...again!


NEW
I hope that was ment to be a joke.

If you search the forum for DOF or focusing you will find hundreds of posts about the importance of using the depth of field and about not using automatic focus.

The trouble with many fisheyes is also that you can not always trust the focus scale on them or the scale does not have any way of setting the focus properly at the best hyperfocal distance.
For example the Nikkor 10.5mm and the Tokina 10-17 has a scale starting at 0.5m and there is nothing between 0,5 and infinity.
Also remember that almost all lenses including the Sigma 8mm can focus behind the infinity. You can focus "behind" infinity which happens if you just turn focus all the way to stop.
The reason for this is that the focus may change with temperature.
See my test here www.panoramas.dk/technics/focus.html

Hyperfocal means the distance that gives you a sharp image from infinity to the closest point at a given aperture.

With the 8mm DOF is not a large problem as it is extreme even at full aperture. However I would not trust that the scale is giving you the distance it actually says as the precision for a short lens like 8mm has to be extreme.
Best is always to take a couple of test shots.

You can find the DOF easy with this table.
www.dofmaster.com/dofjs.html

Another problem with fisheyes is that focusplane is flat which means that the distance to an infinity subject at the edge of the circle is just 10-20 cm


Hans
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