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Thread: Please take a look at this Nadir patch

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John Houghton

Posts: 3935
Location: Hitchin, United Kingdom
Registered: 17 Jan 2005
Re: Please take a look at this Nadir patch
Posted: 9 May 2013 at 9:14 GMT

vrbali said:

... but at very small apertures, you will lose sharpness due to diffraction.

A few days ago, I came across this depth of field calculator: stegmann.dk/mikkel/barnack/ , which includes information about the size of the diffraction spot.

John
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iam360Texas

Posts: 327
Location: Fort Worth, Texas, United States
Registered: 12 Jul 2006
Re: Please take a look at this Nadir patch
Posted: 9 May 2013 at 15:51 GMT
I just downloaded it ! Looks easy enough.
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vrbali

Posts: 197
Location: Bali, Indonesia
Registered: 12 Feb 2010
Re: Please take a look at this Nadir patch
Posted: 9 May 2013 at 19:25 GMT

John Houghton said:

A few days ago, I came across this depth of field calculator


Had "Barnack" on my old PC, but doesn't work on OSx.
An alternative for the diffraction part is; www.cambridgeincolour.com/tutorials/diffraction-p...

VRBali
www.virtualvisitbali.com
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MetroRuss

Posts: 58
Location: Vancouver, Canada
Registered: 6 Mar 2013
Re: Please take a look at this Nadir patch
Posted: 10 May 2013 at 23:01 GMT
Hi John,

Iirc this screen shot was taken from a botched nadir align layers attempt.

Have a nice weekend John

John Houghton said:

Russ, There's not a lot wrong with the setup of your head according to the nadir image. However, I'm a little concerned about the stitching errors in the floor. It's possible that the saw tooth errors in the panohead may be in part due to the stitching. Can you make the camera images available so the stitching can be investigated? I noticed some stitching errors in the spherical panoramas you posted, but I doubt that the head setup had anything to do with those.

John
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MetroRuss

Posts: 58
Location: Vancouver, Canada
Registered: 6 Mar 2013
Re: Please take a look at this Nadir patch
Posted: 10 May 2013 at 23:12 GMT
Dennis said..If, after doing all of this, you point your camera straight down and see that the center of the rotator is not centered in the screen, do not worry.

Thanks so much for telling this to me. This is where I was hung up so long the other day before my photo shoot.

I took 9 single row panos the other day and now I've got to turn it into a tour smile
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MetroRuss

Posts: 58
Location: Vancouver, Canada
Registered: 6 Mar 2013
Re: Please take a look at this Nadir patch
Posted: 10 May 2013 at 23:15 GMT
Hi vrbali,

Thanks for the tip regarding aperture.
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