Okukhulu kuhambile, futhi ukuthi uMichihiro wayengumsunguli nomqondisi weSigma kusukela osukwini lwayo lokuqala, kodwa ngeshwa usishiyile.
I-Sigma yenze umphakathi waqaphela ngokusemthethweni ukuthi ngikushiya ngezansi -via DSLRMagazine-:
«Ngesikhathi uMichihiro Yamaki esungula iSigma Corporation ngoSepthemba 9, 1961, eneminyaka engama-27
Eminyakeni edlule, uSigma wayemncane kunabo bonke futhi omncane kunabo bonke kubakhiqizi bamalensi nabaguquli abangaphezu kwama-50 ababekhona ngaleso sikhathi eJapan. Isitayela sakhe sokuphatha kanye nentshisekelo yakhe kukhuthaze abalingani bakhe kanye nabasebenzi ngokufanayo, futhi lokhu, ngokuyinhloko, yikhona okwenza iSIGMA Corporation yaba uphawu oluhamba phambili ekwenziweni kwamalensi.
I-Yamaki yasungula iSigma Corporation ngoSepthemba 9, 1961 ngokwakhiwa kwesiguquli sokuqala selensi, noma i- "teleconverter." Ngaleso sikhathi, iningi labathwebuli bezithombe lalikholelwa ukuthi i-lens converter ingaba i-afocal kuphela, uhlobo olungabanjwa kuphela ngaphambili kwelensi yekhamera, nonjiniyela we-optical oneminyaka engu-27 ubudala, babeka umbono we-optical ubheke phansi. ISigma Corporation yagubha iminyaka engama-50 yasungulwa ngo-2011 noMnu Michihuro Yamaki esesenkampanini yenkampani.
Kuyo yonke iminyaka yakhe embonini yokuthwebula izithombe, u-Yamaki wagxila ekukhiqizeni ubuchwepheshe bezithombe ezisezingeni eliphakeme, elisebenza kakhulu ngamanani aphakathi. Inhloso yakhe yenkampani bekulokhu ukwenza isithombe sekhwalithi ephezulu sitholakale kubo bonke abathwebuli zithombe. Kuze kube manje, uphumelele ekukhuliseni iNkampani isuka enhlanganweni ephethwe ngumndeni iye kumhlinzeki wocwaningo ohamba phambili, unjiniyela, umkhiqizi kanye nomhlinzeki wesevisi wamalensi, amakhamera nokukhanya. Le nkampani manje yaziwa njengomkhiqizi omkhulu ozimele wamalensi ashintshashintshayo emhlabeni, njengamanje ekhiqiza amamodeli wamalensi angaphezu kwama-50 ahambisana nabakhiqizi abaningi, kufaka phakathi iSigma, Canon, Sony, Nikon, Olympus, Pentax ne-Sony.
Ngo-2008, ngaphansi kobuholi bukaMnu Michihuo Yamaki, iSigma Corporation ithenge iFoveon, inkampani ezinze eCalifornia eyaziwa ngokuthuthukisa ubuchwepheshe be-X3 image sensor, obudume ngokuthi "Foveon." Lobu buchwepheshe obunelungelo lobunikazi, obunezingqimba ezintathu enzwa yesithombe buthatha yonke imibala eyinhloko ye-RGB kwiphikseli ngayinye ehlelwe ngezendlalelo ezintathu - kunokuba iphethini yeBayer - ukuletha isinqumo esihle kakhulu, izithombe zencazelo ephezulu ezinemininingwane ehehayo enezinhlangothi ezintathu kanye ne-gradation ecebile. Ngonyaka odlule, inkampani yamemezela ukufika kwe-SD1, imodeli yezinguquko, enesithwebuli sithombe esiqondile esingu-46 megapixel, enikeza ama-megapixel amaningi kunanoma iyiphi enye i-digital SLR ekucushweni okungama-35mm njengamanje emakethe. I-Sigma Corporation iqhubekile nendikimba yayo yokubhekana nezikhala embonini kanye nezidingo zabathwebuli zithombe, yaqala ngo-2012 ngokwethulwa kochungechunge lwayo olusha lwe-Neo, i-digital (DN) oluvela kulayini we-CSC we-Micro Four Thirds kanye ne-Sony Montutra E.
Emcimbini wangoSepthemba owedlule eJapan wokugubha iminyaka engama-50 le nkampani, uMichihiro Yamaki uthathe leli thuba ukuzwakalisa ukubonga kubo bonke abenze le mpumelelo yaba khona.
UMichihiro Yamaki uchithe impilo yakhe yonke eNkampanini yakhe futhi wawuthanda umsebenzi wakhe. Ukuqamba okuningi embonini kungenxa yethonya layo. Ngonyaka odlule, wahlonishwa ngokuzinikela kwakhe embonini yezithombe nezithombe ngenaliti yegolide noma iphini. Ngaye silahlekelwe yiphayona lomkhakha wezithombe. Abasebenzi beSigma emhlabeni wonke i-SIGMA bakhala kumphathi wabo nomngani wabo abavela enkampanini.
Ngaphezu kwalokho, uMnu. Yamaki usebenzele amanye amaBhizinisi amaningi njenge: Japan Photographic Enterprises Association, Japan Machinery Design Center, Japan Optomechatronics Association, Photographic Society of Japan, kanye neJapan Camera Industry Institute. Wayehlonishwe ngezindondo ze- “Person of the Year” umklomelo ovela ku-The Photoimaging Manufacturers & Distributors Association (PMDA), kanye nomklomelo i- “Hall of Fame” ovela ku-International Photographic Council (IPC).