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Author Topic: Stargazar  (Read 1747 times)

bobfriedman

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Stargazar
« on: July 18, 2020, 01:19:15 »
Nikon D850 ,Macro-Symmar SR 5.6/120 0080
1/160s f/5.6 at 120.0mm iso100 45-stack


Nikon D850 ,Macro-Symmar SR 5.6/80 0023
1/50s f/5.6 at 80.0mm iso200 20-stack


Nikon D850 ,Macro-Symmar SR 5.6/80 0023
1/50s f/5.6 at 80.0mm iso250 35-stack, 3.75 mag
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Robert L Friedman, Massachusetts, USA
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John Geerts

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Re: Stargazar
« Reply #1 on: July 18, 2020, 08:11:33 »
What a details Bob !  Looks like Calcite marble
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Birna Rørslett

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Re: Stargazar
« Reply #2 on: July 18, 2020, 11:59:33 »
Marvellous and so delicate.
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bobfriedman

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Re: Stargazar
« Reply #3 on: July 18, 2020, 12:34:56 »
 the Macro-Symmar SR 5.6/80 0023 fixed aperture machine vision lens is rated for 1.2 mag max. so that last image 3.75X mag is quite a long way from the design specification.  so this was a real push.
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Robert L Friedman, Massachusetts, USA
www.pbase.com/bobfriedman

Birna Rørslett

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Re: Stargazar
« Reply #4 on: July 18, 2020, 12:37:22 »
If the optics are symmetric, they can stand better being pushed outside their optimised magnification domain.
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bobfriedman

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Re: Stargazar
« Reply #5 on: July 18, 2020, 17:13:48 »
Quote from: Birna Rørslett on July 18, 2020, 12:37:22
If the optics are symmetric, they can stand better being pushed outside their optimised magnification domain.

turns out the Makro-Symmar SR 5.6/80 looks pretty symmetric to me. 6 elements, 4 groups
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Robert L Friedman, Massachusetts, USA
www.pbase.com/bobfriedman

PeterN

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Re: Stargazar
« Reply #6 on: July 19, 2020, 09:20:51 »
Very impressive! Looks indeed like a gemstone with awo derail background.
Thanks for sharing
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Peter

golunvolo

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Re: Stargazar
« Reply #7 on: July 19, 2020, 16:33:03 »
Impressive. Ole!
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bobfriedman

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Re: Stargazar
« Reply #8 on: July 19, 2020, 20:21:52 »
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Robert L Friedman, Massachusetts, USA
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rosko

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Re: Stargazar
« Reply #9 on: July 19, 2020, 21:29:43 »
Superb flower shot. the black background and the framing make it even more esthetic.
Bravo !
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Francis Devrainne

Thomas Stellwag

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Re: Stargazar
« Reply #10 on: July 20, 2020, 21:20:19 »
great work
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Thomas Stellwag
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