Nikon's old 105mm f/2.8 micro-Nikkor showing its age

On Mon, 20 Apr 2020 12:42:55 -0700 (PDT), RichA
wrote:

The other lenses are clearly better. The Sony looks like the best here.

https://petapixel.com/2020/04/20/ult...ikon-z-mounts/

Here is an example from 2008 using a Nikon 'AF Micro Nikkor 105mm
1:2.8' mounted on a D70

https://www.dropbox.com/s/vue55mbm8h...C0623.jpg?dl=0 and a
cropped detail at
https://www.dropbox.com/s/op2wtjhsc0...crop2.jpg?dl=0

Some of the mottled appearance is likely to be noise but in fact the
camera has cropped the metallurgical grain structure of the coin. I am
sure it would do better on the D750 but the lens's internal electrical
have recently died and cannot be repaired. A pity. For a 25 year old
lens it does very well.
--

Regards,

Eric Stevens

On Tue, 21 Apr 2020 16:02:40 +1200, Eric Stevens
wrote:

On Mon, 20 Apr 2020 12:42:55 -0700 (PDT), RichA
wrote:

The other lenses are clearly better. The Sony looks like the best here.

https://petapixel.com/2020/04/20/ult...ikon-z-mounts/

Here is an example from 2008 using a Nikon 'AF Micro Nikkor 105mm
1:2.8' mounted on a D70

https://www.dropbox.com/s/vue55mbm8h...C0623.jpg?dl=0 and a
cropped detail at
https://www.dropbox.com/s/op2wtjhsc0...crop2.jpg?dl=0

Some of the mottled appearance is likely to be noise but in fact the
camera has cropped the metallurgical grain structure of the coin. I am
sure it would do better on the D750 but the lens's internal electrical
have recently died and cannot be repaired. A pity. For a 25 year old
lens it does very well.

"Cropped"? No, 'captured'.
--

Regards,

Eric Stevens

On Tue, 21 Apr 2020 09:12:57 -0700 (PDT), RichA
wrote:

On Tuesday, 21 April 2020 00:02:22 UTC-4, Eric Stevens wrote:
On Mon, 20 Apr 2020 12:42:55 -0700 (PDT), RichA
wrote:

The other lenses are clearly better. The Sony looks like the best here.

https://petapixel.com/2020/04/20/ult...ikon-z-mounts/

Here is an example from 2008 using a Nikon 'AF Micro Nikkor 105mm
1:2.8' mounted on a D70

https://www.dropbox.com/s/vue55mbm8h...C0623.jpg?dl=0 and a
cropped detail at
https://www.dropbox.com/s/op2wtjhsc0...crop2.jpg?dl=0

Some of the mottled appearance is likely to be noise but in fact the
camera has cropped the metallurgical grain structure of the coin. I am
sure it would do better on the D750 but the lens's internal electrical
have recently died and cannot be repaired. A pity. For a 25 year old
lens it does very well.
--

Regards,

Eric Stevens

Once you get down to the crystalline structure in the metal, it begins to break up light into its component colours, like a prism or reflection grating.
Here is a shot using Nikon's 60mm macro, quite a decent lens for the price:
https://pbase.com/andersonrm/image/113999802

Depth of focus is the problem. That's why I went for the 105mm.
--

Regards,

Eric Stevens