Editing Leica Camera (section)

== Cooperation ==
{{main|L-Mount Alliance|Lumix#Leica model crossover}}
[[file:Insta360 ONE RS 1-Inch 360.png|thumb|[[Insta360]] ONE RS 1-Inch 360 co-engineered with Leica]]
[[file:Huawei P9 main camera.jpg|thumb|[[Huawei P9]] was the first [[smartphone]] to be co-engineered with a Leica camera.]]
[[file:The back of Xiaomi 12SU.jpg|thumb|[[Xiaomi 12|Xiaomi 12S Ultra]] featured a "Leica Summicron 1:1.9-4.1 / 13-120 ASPH camera system"]]
[[file:Valbray-Leica-EL1 black.jpg|thumb|[[Valbray]] EL1 limited edition in black for 100th anniversary of Leica camera panorama]]

During the 2018 Photokina in Cologne, Leica announced that [[Sigma Corporation|Sigma]] and [[Panasonic]] had become licensed for the L-mount platform. The three companies would form a strategic and technical alliance, yet remain independent.<ref>{{cite web |url=http://www.l-mount.com/ |title=Home |website=l-mount.com}}</ref>

Leica-branded lenses, such as some [[Nocticron]], Elmarit and Summilux lenses, have been used on many [[Panasonic]] (Matsushita) digital cameras ([[Lumix]]) and video recorders since 1995. Panasonic/Leica models were the first to incorporate optical [[image stabilization]] in their digital cameras.<ref>"[http://www.overgaard.dk/leica_history.html 1995: Matsushita (Panasonic) started making all their cameras with Leica lenses]", Thorsten Overgaard.</ref> Several Panasonic/Leica lenses have been produced for the [[Micro Four Thirds]] mount, including the 12&nbsp;mm {{f/|1.4}} Summilux, 15&nbsp;mm {{f/|1.7}} Summilux and 25&nbsp;mm {{f/|1.4}} Summilux prime lenses, and zooms including a 12–60&nbsp;mm {{f/|2.8–4}} and 100–400&nbsp;mm {{f/|4–6.3}}.

Leica and Minolta signed a technical cooperation agreement in June 1972.<ref>Year and month: Francesch, p.&nbsp;49.</ref>

* Minolta XE chassis became the basis for the Leica R3 SLR – cooperative development with Copal on the 'Copal-Leitz Square' electronic shutter module, with advanced gear train and self-timer. 
* Minolta XD chassis and microelectronics became the basis for the Leica R4 SLR.
** Several lenses for the above cameras including the MC/MD 24mm F2.8 (Leica Elmarit-R, glass by Minolta but case Made In Germany); the (1983) MD Zoom 35–70 F3.5 (Vario-Elmar-R); (1978) Minolta MD 75–200 F4.5.
* Leica 'Leitz-Minolta' CL and CLE (Compact Leica Electronic)
** Minolta co-designed and produced the following lenses for the above cameras: 
*** '''M-Rokkor 40mm F2''' (''Summicron-C'' – Made in Germany); 
*** '''M-Rokkor 90mm F4''' 'Made by Leitz in Germany' (''Elmar-C'' – Made in Germany and later in Japan by Minolta). This lens was solely designed by Minolta, being remarkable for one of a few Japanese lenses to be made in Germany. The lens elements were produced by Minolta in Japan. 
*** '''M-Rokkor 28mm F2.8'''. This lens is not the same as any of the Leica M 28mm F2.8's, being a 7 element, 5 group design<ref>{{cite web |last1=Waloszek |first1=Gerd |title=Leica M (Typ 240): Minolta Rokkor 28mm f/2.8 |url=http://www.waloszek.de/m240_mr28_e.php |website=waloszek.de |access-date=6 November 2018}}</ref> while contemporary Leicas were 8e/6g (Elmarit II '72–'79 and Elmarit-M III '79–'93). The M-Rokkor was sold for about less than half the price – however Modern Photography tests indicated that performance was as good as the Leica equivalent. This is supported by user experiences and modern tests.<ref>{{cite web |author=al_kaplan |title=Question about an M-Rokkor 28mm f2.8 (Minolta) |url=https://www.photo.net/discuss/threads/question-about-an-m-rokkor-28mm-f2-8-minolta.129294/ |website=photo.net |date=October 15, 2004 |access-date=6 November 2018}}</ref><ref>{{cite web |author=Jesse |title=Minolta M Rokkkor 28mm f2.8 |url=http://www.jumboprawn.net/jesse/cams/gear-profiles/m-rokkor-28mm/m-rokkor-28mm.html |website=jumboprawn.net |access-date=6 November 2018 |archive-date=March 5, 2019 |archive-url=https://web.archive.org/web/20190305025225/http://www.jumboprawn.net/jesse/cams/gear-profiles/m-rokkor-28mm/m-rokkor-28mm.html |url-status=dead }}</ref>

In 2020, Leica entered a strategic partnership with [[Insta360]] to help produce the ONE R 1-Inch Edition.<ref>{{Cite web|title=Leica Camera AG and Insta360 Announce Strategic Partnership to Reinvent the Action Cam // 2020 // Press Releases // Press Centre // Company - Leica Camera AG|url=https://us.leica-camera.com/Company/Press-Centre/Press-Releases/2020/Press-Release-Leica-Camera-AG-and-Insta360-Announce-Strategic-Partnership-to-Reinvent-the-Action-Cam|access-date=2020-12-31|website=us.leica-camera.com}}</ref> Since then, ONE R has been recognised as one of TIME magazine's best inventions of 2020.<ref>{{Cite magazine|title=Insta360 One R: The 100 Best Inventions of 2020|url=https://time.com/collection/best-inventions-2020/5911341/insta360-one-r/|access-date=2021-01-04|magazine=Time}}</ref>

Since 2016, Leica has established partnership with the Chinese telecommunications company [[Huawei]], and Leica cameras will be co-engineered into Huawei [[smartphones]], including the [[Huawei P series|P series]] and [[Huawei Mate series|Mate series]]. The first smartphone to be co-engineered with a Leica camera was the [[Huawei P9]].<ref>{{cite press release |url=https://en.leica-camera.com/Company/Press-Centre/Press-Releases/Press-Releases-2016/Press-Release-HUAWEI-and-Leica-Camera-announce-long-term-technology-partnership-for-the-reinvention-of-smartphone-photography |title=Huawei and Leica Camera announce long-term technology partnership for the reinvention of smartphone photography |website=Leica Camera}}</ref> The partnership ended with the [[Huawei P50|Huawei P50 series]] in 2021.<ref>{{Cite web |date=2022-05-23 |title=After Xiaomi/Leica deal, Huawei confirms end of Leica partnership |url=https://www.androidauthority.com/huawei-leica-partnership-ending-3167928/ |access-date=2022-06-30 |website=Android Authority |language=en}}</ref>

In 2021, Leica has established technology partnership with [[Sharp Corporation]], and Leica cameras will be co-engineered into Sharp smartphones for the Japanese market only. The first smartphone to be co-engineered with a Leica camera was the AQUOS R6 with 1-inch-sensor camera.<ref>{{Cite web |year=2021 |title=Leica Camera AG and Sharp Corporation announce technology partnership in the smartphone photography segment for the Japanese market |url=https://us.leica-camera.com/Company/Press-Centre/Press-Releases/2021/Press-Release-Leica-Camera-AG-and-Sharp-Corporation-announce-technology-partnership-in-the-smartphone-photography-segment-for-the-Japanese-market |access-date=2021-06-28 |website=Leica}}</ref> Then Leica with the [[SoftBank Group|SoftBank]] introduced the smartphone Leitz Phone 1 which have same specifications as AQUOS R6 but different design.<ref>{{Cite web|title=Leitz Phone 1 is a Leica-branded phone exclusive to Japan|url=https://www.gsmarena.com/leitz_phone_1_is_a_leicabranded_phone_exclusive_to_japan-news-49632.php|access-date=2021-06-28|website=GSMArena.com|language=en-US}}</ref>

In 2022, Leica entered a strategic partnership with [[Xiaomi]] to jointly develop Leica cameras to be used in Xiaomi flagship smartphones, succeeding the partnership between Huawei and Leica. The first flagship smartphones under this new partnership were the [[Xiaomi 12|Xiaomi 12S Ultra]] and [[Xiaomi MIX Fold 2]], launched in July and August 2022, respectively.<ref>{{Cite web |title=Mi Global Home |url=https://www.mi.com/global/discover/article?id=2708 |access-date=2022-05-23 |website=Mi Global Home |language=en}}</ref>

In 2014, to commemorate Leica camera's 100th anniversary, they partnered with Swiss watch manufacture [[Valbray]] to develop a limited edition chronograph wristwatch with Valbray's signature Leica aperture inspired dial.<ref>{{cite web | last=Doerr | first=Elizabeth | title=Leica's Very Special Limited Edition EL 1 Chrono With Valbray | publisher=Quill & Pad | date=27 May 2014 | url=https://quillandpad.com/2014/05/27/leicas-very-special-limited-edition-el-1-chrono-with-valbray/}}</ref>