billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

Nikon does produce their own blanks, and only one other company in the world does that.
So what is your point?
You don't even know the only other optical company in the world that makes their OWN blanks.
Hint, it's not located in Japan.
Good luck and keep on shooting until the end.
And yes, I can keep this up ALL day.

Bbarn Loc: Ohio

Silicon as in semiconductors, as in electronics that are in modern lenses.

Nikon has outsourced some of their recent lens efforts to Tamron.

Nikon, like most other companies, isn't what it once was.

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

AHHHHHHHHHHHH. No kidding. So what is your point, you have not made it yet. You keep posting the obvious.

Bbarn Loc: Ohio

I made the point but you apparently missed it, and still don't get it.

Your statement that Nikon manufactures all of the parts used in their lenses is not true. By your own admission above.

gwilliams6

Exactly correct User ID, not making the blanks of the bare glass or some parts doesn't mean ANYTHING. These companies like Sigma, Tamron, Sony, Panasonic, Fuji, Olympus, Canon, etc. DO source top quality bare glass, and then mold, press, grind, polish and coat them to their exact design specs and fully assemble them in their own plants with many parts they manufacture in-house, and that is what matters, the final product.

Nothing about Nikon making their own blanks makes their lenses superior to the best lenses from any other lens makers, nothing.

What product today from the most expensive cars, electronics, appliances, even airplanes ,etc. with hundreds and even thousands of parts is TOTALLY made from scratch with all in-house made and/or sourced parts , probably none.

Nikon cameras are not totally made with in-house built parts, the sensors are made by Sony BTW. And I bet there are some electronics and other parts inside Nikon cameras that may have been designed by Nikon, but aren't made by Nikon.

You are free to have your own personal preferences and biases, we all do, but dont try to sell anyone else on your fake facts about Sigma only using lowest bid glass blanks, and lowest bid lens parts . LOL

No one is buying it Bill, sorry. And yes you can "keep this up all day". but you are just making yourself look very juvenile, sad.

Cheers and best to you.

gwilliams6

FYI, here is a thorough overview of Sigma's approach to manufacturing, including its lens making processes:

https://www.sigma-global.com/en/about/craftsmanship/

As you see, Sigma REJECTS the "global procurement" of sourcing the cheapest components: This is the reality Bill, not your fake assumptions of Sigma only buying the cheapest glass blanks and buying the cheapest lens parts. LOL

QUOTE:
"Head office and manufacturing base in close contact: the merits of a closely-linked business chain.
SIGMA’s production system is completely based in Japan: our compact supply chain is concentrated in the Tohoku region and almost all manufacturing, processing and assembly takes place at our manufacturing base in Aizu. This is an extraordinary setup in an industry that mostly favors “global procurement”, in other words sourcing the cheapest parts from around the world. Why do we insist on manufacturing domestically, despite higher costs? Because we believe such a domestic system to be an essential factor for creating unique and high-quality products.
The direct, face-to-face communication made possible by having our manufacturing site, our head office and our supply chain based in one single country also enables a speedy and meticulous product development. And because the same people are consistently involved in our manufacturing processes, they are able to accumulate a wealth of experience, knowledge and know-how from which new ideas and innovations can spring.
These are merits that cannot be acquired with money alone, and we believe them to be our greatest asset. That is why a domestic, fully integrated production system is so important to us."

Cheers and best to you all. And Bill, I can keep up with supplying the facts, not fiction, all day, lol

gwilliams6

Here is some of what DPReview had to say about Sigma:

"Quick info
Global website: www.sigma-photo.co.jp
US website: www.sigmaphoto.com
Established: 1961
Country: Japan
First digital camera: SD9, 2002
UK website: www.sigma-imaging-uk.com
The world's leading supplier of third-party lenses, Sigma has been offering a more affordable alternative to the camera manufacturers’ own lenses for over four decades. In 2002 Sigma launched its first digital SLR, the SD-9, using Foveon’s unique X3 sensor and its own lens mount. In late 2008 Sigma acquired Foveon. in 2012 Sigma announced the launch of a new 'Global Vision' lens lineup. Featuring a range of exceptionally high-performance primes and zoom lenses, the 'Art' series especially has helped elevate Sigma's reputation among enthusiast and professional photographers worldwide. In late 2018, Sigma announced that it was joining the 'L-mount alliance' alongside Panasonic and Leica, to develop a new range of full-frame mirrorless cameras and lenses."

Cheers and best to you all.

gwilliams6

Here is DPreview's listing of Sigma lens releases from 2023, going back to 2004, with more new lenses to be released this year, including those three Z-mount Sigma lenses:

https://www.dpreview.com/products/sigma/lenses?subcategoryId=lenses&page=1

"Do professional photographers use Sigma lenses?
However, though Sigma lenses are third-party, the brand is trusted by many professional photographers worldwide. The quality of a Sigma lens (especially the Art line) is often equal to or even better than well-known camera brands. Oct 3, 2022 "

Cheers and best to you all.

User ID

40 years and learned what ? One version of one way to build a widget.

40 years on the inside, but the real action is all on the outside.

gwilliams6

You got it correct User ID

gwilliams6

More new Sigma Lenses that Shine on the Silver Screen:
Purpose-built for filmmakers, the 65mm T1.5 and T2.5 Classic bring a traditional cinema focal length to the SIGMA CINE line. Available in Canon EF, Sony E, and PL mounts and compatible with full-frame and Super 35 sensors.

https://blog.sigmaphoto.com/2023/first-look-sigma-cine-lens-65mm-primes/?mc_cid=6997fe9693&mc_eid=674abb088b

Cheers and best to you all.

SuperflyTNT Loc: Manassas VA

Nikon makes the equipment that makes the chips! 😜🤪

Bbarn Loc: Ohio

Yes, they do make lithography equipment used in chip manufacturing.

gwilliams6

Some videos:

"Made in Aizu" 2018｜SIGMA
https://www.youtube.com/watch?v=HsYfkUnclLQ&t=307s

A SIGMA Factory Tour - cinema5D Exclusive, 2019
https://www.youtube.com/watch?v=ecsOrRUbNjU

Sigma Factory Tour, including some of the lens making processes, 2020
https://www.youtube.com/watch?v=V3yyOmqN-OI&list=RDCMUC53K-kVPM4wMeHO6ng3DXEg&index=1

SIGMA Factory Tour - SIGMA fp Camera, new 35mm Lens and Soba, 2020
https://www.youtube.com/watch?v=8SlCpyj5CnA

SIGMA CINE LENSーHigh Speed Zoom Line, 2017
https://www.youtube.com/watch?v=gNDsd23KjTU&list=RDCMUCB0JW9gFBGczQ0RmkkDVhwQ&index=8

SIGMA 18-35mm T2: Shooting an Indie Feature Film with One Lens!, 2020
https://www.youtube.com/watch?v=tDUmk35OvC0

Cheers and best to you all.

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

DPReview is certainly a great place to compare lenses. The only problem is that these tests take place in a controlled environment where everything is pre planned.
When that same lens is taken out into the real world and used by individuals who vary in skill level the results are much different.
Most lenses produced today can deliver great image quality. Results are driven more by individual ability rather than by the lens itself.
Excellent results can be gotten by Tamron and Sigma. Lens choice is a personal matter. Some photographers like the color and IQ from third party lenses and some photographers like the color and IQ from OEM glass.
I prefer OEM glass, it is a personal thing derived from years of professional photography. Others are free to choice what ever they like based on personal preferences.
Good luck and keep on shooting until the end.