NikonGear'23

Images => Nature, Flora, Fauna & Landscapes => Topic started by: bobfriedman on July 18, 2020, 01:19:15

Title: Stargazar
Post by: bobfriedman 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
(https://pbase.com/bobfriedman/image/170882339/original.jpg)

Nikon D850 ,Macro-Symmar SR 5.6/80 0023
1/50s f/5.6 at 80.0mm iso200 20-stack
(https://pbase.com/bobfriedman/image/170882602/original.jpg)

Nikon D850 ,Macro-Symmar SR 5.6/80 0023
1/50s f/5.6 at 80.0mm iso250 35-stack, 3.75 mag
(https://pbase.com/bobfriedman/image/170882712/original.jpg)

Title: Re: Stargazar
Post by: John Geerts on July 18, 2020, 08:11:33

What a details Bob !  Looks like Calcite marble

Title: Re: Stargazar
Post by: Birna Rørslett on July 18, 2020, 11:59:33

Marvellous and so delicate.

Title: Re: Stargazar
Post by: bobfriedman 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.

Title: Re: Stargazar
Post by: 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.

Title: Re: Stargazar
Post by: bobfriedman 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

Title: Re: Stargazar
Post by: PeterN on July 19, 2020, 09:20:51

Very impressive! Looks indeed like a gemstone with awo derail background.
Thanks for sharing

Title: Re: Stargazar
Post by: golunvolo on July 19, 2020, 16:33:03

Impressive. Ole!

Title: Re: Stargazar
Post by: bobfriedman on July 19, 2020, 20:21:52

I found this page which list the range of the Makro-Symmar 5.6/80-0023 up to 4x

https://translate.google.com/translate?hl=en&sl=auto&tl=en&u=http%3A%2F%2Fwww.nowa.com.tw%2FprodDetail_print.asp%3Fid%3D34

Title: Re: Stargazar
Post by: rosko on July 19, 2020, 21:29:43

Superb flower shot. the black background and the framing make it even more esthetic.
Bravo !

Title: Re: Stargazar
Post by: Thomas Stellwag on July 20, 2020, 21:20:19

great work