Büchse der Pandora in Aluminium

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Guppy
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Büchse der Pandora in Aluminium

Post by Guppy »

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


Image
Last edited by Guppy on Mon Feb 24, 2014 8:39 am, edited 1 time in total.

rjlittlefield
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Re: Büchse der Pandora in Aluminium

Post by rjlittlefield »

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

dolmadis
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Post by dolmadis »

Hi Kurt

Can you share the details of the tube you used please?

Thanks

John

Guppy
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Post by Guppy »

Hi John

looking at the following address:
http://www.photomacrography.net/forum/v ... hp?t=22725
This Time the tube is in aluminum and not in PVC, without a second tube.

Kurt

dolmadis
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Post by dolmadis »

Thank you, Kurt.

John

baro-nite
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Post by baro-nite »

Extraordinarily beautiful work, and an inventive and elegant technique.
--
Jeff S

abpho
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Post by abpho »

Beautiful image.
I'm in Canada! Isn't that weird?

RogelioMoreno
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Post by RogelioMoreno »

Beautiful picture!

Rogelio

abpho
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Post by abpho »

Congrats Kurt.
I'm in Canada! Isn't that weird?

jazzper
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Post by jazzper »

This is an absolutely brilliant idea! And the result is beautiful as well - great work!
Jesper - Flickr

Yousef Alhabshi
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Post by Yousef Alhabshi »

Superb.. amazing sharpness at this level of magnification.

Congrats

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