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Guppy

Joined: 20 Dec 2010 Posts: 56 Location: Switzerland
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Posted: Fri Feb 14, 2014 2:45 pm Post subject: Büchse der Pandora in Aluminium |
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This time is Pandora's Box a Aluminium Tube.
I use the NIKON M Plan, 60/0.7 LWD, 210/0, with 60:1, Sharpness depth 1.1µm.
The picture width amounts 0.39mm.
These were 427 pictures, stack with Zerene.
The steps are 0.25 µm.
Kurt
 _________________ www.focus-stacking.ch
Last edited by Guppy on Mon Feb 24, 2014 8:39 am; edited 1 time in total |
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rjlittlefield Site Admin

Joined: 01 Aug 2006 Posts: 19546 Location: Richland, Washington State, USA
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Posted: Fri Feb 14, 2014 4:41 pm Post subject: Re: Büchse der Pandora in Aluminium |
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This is beautiful!
Guppy wrote: | I use the NIKON M Plan, 60/0.7 LWD, 210/0, with 60:1, Sharpness depth 0.6µm. |
To clarify... It looks like you're using a "sharpness depth" that is measured as maximum deviation from the point of sharpest focus. The total DOF is twice as much. The formula for total DOF is lambda/NA^2, which for green light at lambda=550nm would be 1.12 µm. Because this subject has a lot of blue in it, we might use lambda=450nm to give a tighter estimate of 0.92 µm.
In either case, your steps of 0.25 µm are certainly small enough to avoid focus banding.
--Rik |
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dolmadis
Joined: 07 Dec 2011 Posts: 549 Location: UK
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Posted: Sat Feb 15, 2014 1:45 am Post subject: |
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Hi Kurt
Can you share the details of the tube you used please?
Thanks
John |
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Guppy

Joined: 20 Dec 2010 Posts: 56 Location: Switzerland
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dolmadis
Joined: 07 Dec 2011 Posts: 549 Location: UK
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Posted: Sat Feb 15, 2014 5:03 am Post subject: |
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Thank you, Kurt.
John |
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baro-nite

Joined: 25 Feb 2013 Posts: 58 Location: North Carolina, USA
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Posted: Sat Feb 15, 2014 12:08 pm Post subject: |
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Extraordinarily beautiful work, and an inventive and elegant technique. _________________ --
Jeff S |
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abpho

Joined: 17 Aug 2011 Posts: 1426 Location: Earth
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Posted: Sun Feb 16, 2014 8:15 pm Post subject: |
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Beautiful image. _________________ I'm in Canada! Isn't that weird? |
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RogelioMoreno
Joined: 20 Nov 2009 Posts: 2959 Location: Panama
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Posted: Mon Feb 17, 2014 7:42 am Post subject: |
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Beautiful picture!
Rogelio |
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abpho

Joined: 17 Aug 2011 Posts: 1426 Location: Earth
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Posted: Sat Mar 01, 2014 4:35 pm Post subject: |
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Congrats Kurt. _________________ I'm in Canada! Isn't that weird? |
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jazzper
Joined: 29 Mar 2013 Posts: 145 Location: Copenhagen, Denmark
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Posted: Mon Mar 03, 2014 8:00 am Post subject: |
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This is an absolutely brilliant idea! And the result is beautiful as well - great work! _________________ Jesper - Flickr |
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Yousef Alhabshi

Joined: 04 Feb 2011 Posts: 168 Location: United Arab Emirates
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