mawyatt2002

mawyatt2002

Lives in United States Clearwater, United States
Works as a Electrical Engineer Analog, RF & MW & Chip Design
Joined on Aug 27, 2004
About me:

Hobbies are Tennis, Sports Cars (Porsche 911s) & Photography
30 Issued US Patents, more pending

Comments

Total: 5, showing: 1 – 5
On article Incredible microscopic close-ups of a peacock feather (80 comments in total)
In reply to:

ktjones: For those interested in high-magnification macrophotography, including focus-stacking and the use of microscope objectives, the photomacrography.net website is a good source of information.

There are numerous forums on this site, including the following:

Images: www.photomacrography.net/forum/viewforum.php?f=27

Technique: www.photomacrography.net/forum/viewforum.php?f=8

Another good resource is Johan's Extreme Macro site.

Link | Posted on Sep 25, 2017 at 14:31 UTC
On article Incredible microscopic close-ups of a peacock feather (80 comments in total)
In reply to:

(unknown member): I don't get what's so special with these shots? Get some extension tubes and do the same thing.

Pancho,

The Nikon and Mitutoyo lens are special infinite corrected microscope objectives. They are designed to work with another lens called a tube lens. The only way to focus is by moving the camera/lens or subject. In camera focus stacking uses the lens internal focus mechanism, the mentioned objective lenses have no such means.

If you research some you will find many reasons in image stacking for moving from in-lens focus to camera/lens to subject movement as a means to focus. The latter is generally preferred after passing 1~2X magnification.

Link | Posted on Sep 25, 2017 at 14:28 UTC
On article Incredible microscopic close-ups of a peacock feather (80 comments in total)
In reply to:

ktjones: For those interested in high-magnification macrophotography, including focus-stacking and the use of microscope objectives, the photomacrography.net website is a good source of information.

There are numerous forums on this site, including the following:

Images: www.photomacrography.net/forum/viewforum.php?f=27

Technique: www.photomacrography.net/forum/viewforum.php?f=8

A great resource for those that like this level of detail and precision. Caution though, as this can become additive!! I know, I'm a junkie that shoots chip (IC) images.

Link | Posted on Sep 24, 2017 at 13:17 UTC
On article Incredible microscopic close-ups of a peacock feather (80 comments in total)
In reply to:

(unknown member): I don't get what's so special with these shots? Get some extension tubes and do the same thing.

These lenses are microscope objectives, the Nikon and Mitutoyo require another "tube lens" in the optical path to function properly, so simple extension doesn't work with these lenses. The Nikon has a depth of in focus area (DoF as mentioned by neilt3), actually a thin ribbon, of only 7 microns. To render a final in focus image requires multiple images where either the focus point is shifted or the lens/camera (or subject) is moved. Many images are required to slide the thin ribbion in focus area across the subject. Can utilizes a Wemacro stepper motor driven focus rail to move the lens/camera in precise incremental steps, this is controlled by a special controller and uses a computer or smart phone for a user interface.

Link | Posted on Sep 24, 2017 at 13:12 UTC
On article Incredible microscopic close-ups of a peacock feather (80 comments in total)
In reply to:

sh10453: Wondering what stacking software Tuncer uses.

Zerene I believe. The automated focus rail is from Wemacro.

Link | Posted on Sep 21, 2017 at 17:59 UTC
Total: 5, showing: 1 – 5