Snow Crystals

This area is for the discussion of what's new, what's on your mind, and general photographic topics. A place to meet, make comments on this site, and get the latest community news.

Moderators: ChrisR, Chris S., Pau, rjlittlefield

Saul
Posts: 1667
Joined: Mon Jan 31, 2011 11:59 am
Location: Naperville, IL USA
Contact:

Snow Crystals

Post by Saul »


RobertOToole
Posts: 1617
Joined: Thu Jan 17, 2013 9:34 pm
Location: United States
Contact:

Post by RobertOToole »

The Nikon Museum is always worth a visit. The place is only a 5-10 min walk from the train station and its free. They are constantly updating the museum and adding new industrial technology. I plan to visit there again in February.

Looks like I am going to make the snowflake show but will miss this one:

Special Exhibition “Prototype Lenses — Fascinating Images Captured by the Nikon Z 7 Mirrorless Camera” In this exhibition, Nikon will exhibit approximately 60 prototypes of interchangeable lenses for SLR cameras produced from the 1950’s to the 1980’s.

People should realize that the museum is a wonderful place for any photographer regardless of what brand they shoot, most people say well why would I go to the Nikon Museum when I shoot Canon? I don't own a Nikon Ultra Micro Nikkor lens but I think the technology and history is very interesting.

Robert

lonepal
Posts: 320
Joined: Sat Jan 28, 2017 12:26 pm
Location: Turkey

Post by lonepal »

Regards.
Omer

rjlittlefield
Site Admin
Posts: 20987
Joined: Tue Aug 01, 2006 8:34 am
Location: Richland, Washington State, USA
Contact:

Re: Snow Crystals

Post by rjlittlefield »

Following this link, I found what seemed to be a really helpful handle for finding descriptions of technique (emphasis added):
Rokuro Yoshida ... developed the "single light source, dual-color illumination method", which is the standard illumination method for shooting snow crystals in color today.
But to my surprise, when I issued a Google query on the quoted string, I got "No results found" -- not even the nikon.com page! DuckDuckGo did a little better. It did find the nikon.com page, but nothing else.

Does anybody here know a good reference for Yoshida's specific technique?

(Poking around, I found http://www.its.caltech.edu/~atomic/snow ... photo2.htm, which I suspect gives a basis for the answer, but I'd rather see something more specific to Yoshida's work.)

--Rik

RobertOToole
Posts: 1617
Joined: Thu Jan 17, 2013 9:34 pm
Location: United States
Contact:

Post by RobertOToole »

At the museum they cover the history of the ultra-micro-nikkors and litho lenses on display in Japan.

This is one from 1960s, 1260 lines per mm. Japan's first microlithograpy lens. The current lenses are 13,000 lines per mm.

Image

RobertOToole
Posts: 1617
Joined: Thu Jan 17, 2013 9:34 pm
Location: United States
Contact:

Re: Snow Crystals

Post by RobertOToole »

rjlittlefield wrote:
Following this link, I found what seemed to be a really helpful handle for finding descriptions of technique (emphasis added):
Rokuro Yoshida ... developed the "single light source, dual-color illumination method", which is the standard illumination method for shooting snow crystals in color today.
But to my surprise, when I issued a Google query on the quoted string, I got "No results found" -- not even the nikon.com page! DuckDuckGo did a little better. It did find the nikon.com page, but nothing else.

Does anybody here know a good reference for Yoshida's specific technique?

(Poking around, I found http://www.its.caltech.edu/~atomic/snow ... photo2.htm, which I suspect gives a basis for the answer, but I'd rather see something more specific to Yoshida's work.)

--Rik
Well if no one figures it out I'll take photos and post a report once I'm back from Japan. :D

Robert

mawyatt
Posts: 2479
Joined: Thu Aug 22, 2013 6:54 pm
Location: Clearwater

Post by mawyatt »

RobertOToole wrote:At the museum they cover the history of the ultra-micro-nikkors and litho lenses on display in Japan.

This is one from 1960s, 1260 lines per mm. Japan's first microlithograpy lens. The current lenses are 13,000 lines per mm.

Image
Robert,

The setups/lenses used today for semiconductor work may be even better than 13000 lines per mm (~77nm) since chips are being produced with 7nm features. I don't believe Nikon is actually leading in this area anymore, as they were awhile back.

I would love to visit the museum someday, but that's probably not going to happen. Please take a bunch of photos for us, and use your D850 :D

Best,
Research is like a treasure hunt, you don't know where to look or what you'll find!
~Mike

RobertOToole
Posts: 1617
Joined: Thu Jan 17, 2013 9:34 pm
Location: United States
Contact:

Post by RobertOToole »

mawyatt wrote:
Robert,

The setups/lenses used today for semiconductor work may be even better than 13000 lines per mm (~77nm) since chips are being produced with 7nm features. I don't believe Nikon is actually leading in this area anymore, as they were awhile back.

I would love to visit the museum someday, but that's probably not going to happen. Please take a bunch of photos for us, and use your D850 :D

Best,
Hi Mike,

I'm sure you are right about the resolution, heck I was impressed with the 1200 lpmm.

They have a few big displays on litho technology even a motorized step and repeat set up and a few huge lenses, one is a giant cutaway. Last year they had a display about LED TV panel imaging, they go over the tech behind it with multiple lenses and when you step back they outline the imaging area on the carpet and its huge! They are imaging something like 6 TV panels at once.

Will be sure to post something when I am back in March.

Robert

Post Reply Previous topicNext topic