Yini aI-Fisheye Lens? Ama-lens we-fisheye angabamba inkambu ebanzi kakhulu yokubuka, imvamisa kuze kube ngama-degree angama-180 noma ngaphezulu, okuvumela umthwebuli wezithombe ukuthi athwebule indawo enkulu kakhulu endaweni yesehlakalo.

I-fisheye lens

Ama-lens we-fisheye aqanjwe ngegama elihlukile lokuhlanekezela okuhlukile, okudala isithombe esiyindilinga noma esibunjwe umgqomo esingeqiswa yizethuli futhi zibunjiwe. Umphumela wokuhlanekezela ubangelwa indlela ama-lens akhanya ngayo lapho kudlula izinto zengilazi ezigobile zelensi. Lo mphumela ungasetshenziswa ngobuciko ngabathwebuli bezithombe ukudala izithombe ezihlukile nezinamandla, kepha futhi kungaba umkhawulo uma kufiswa isithombe esibukeka ngokwemvelo.

Amalensi we-Fisheye eza ngezinhlobonhlobo ezihlukene, kufaka phakathi amalensi we-fisheye ayindilinga, amalensi wezinkulungwane ozungelezile, kanye namalensi we-fisheye agcwele. Ngayinye yalezi zinhlobo zama-lens we-fisheye inezimpawu zayo ezihlukile futhi ilungele izinhlobo ezahlukene zezithombe.

Ngokungafani namalensi enziwe kabusha,amalensi we-fisheyeazibonakali ngokuphelele ngobude obugxile kanye nokwakheka wedwa. I-angle yokubuka, ububanzi besithombe, uhlobo lokuqagela, kanye nokumboza inzwa konke kuyahluka ngokuzimela kwalokhu.

Izinhlobo zokusebenzisa ifomethi

Amalensi we-fisheye ayindilinga

Uhlobo lokuqala lwamalensi we-fisheye athuthukiswe kwakuyi-"lens eyindilinga" engadala isithombe esiyindilinga nge-180-degree field. Banobude obufushane kakhulu bokugxila, ngokujwayelekile kusuka ku-7mm kuya ku-10mm, okubenza bakwazi ukubamba umbono obanzi kakhulu wesigameko.

Zungelezela ilensi ye-fisheye

Amalensi we-Fisheye eyindilinga aklanyelwe ukukhiqiza isithombe esiyindilinga senzwa yekhamera noma indiza yefilimu. Lokhu kusho ukuthi isithombe esiphumela sinesimo esiyindilinga esinemingcele emnyama ezungeze indawo eyindilinga, yakha umphumela oyingqayizivele we- "Fishbowl". Amakhona esithombe se-fisheye esiyindilinga azoba mnyama ngokuphelele. Lobumnyama buhlukile ekuvumeni kancane kancane kwamalensi e-rexilinear futhi usethe ngokushesha. Isithombe esiyindilinga singasetshenziswa ukudala izingoma ezithokozisayo nezinobuciko. Lokhu kunama-angle angu-180 ° °, avundlile kanye ne-diagonal. Kepha kungaba nomkhawulo uma umthwebuli wezithombe efuna isilinganiso esingunxande.

-Siyingiliziamalensi we-fisheyezivame ukusetshenziswa ezithombeni zokudala nangobuciko, njengasekuthwebula izithombe zokwakha, izithombe ezingenamsoco, kanye nezithombe ezedlulele zezemidlalo. Zingaphinde zisetshenziselwe izinhlelo zokusebenza zesayensi nezobuchwepheshe lapho kudingeka khona ukubuka okubanzi kwe-ang-angle, njengokuqonda kwezinkanyezi noma nge-microscopy.

I-Diagonal Fisheye Lens (AKA Uhlaka olugcwele noma unxande)

Njengoba amalensi we-fisheye athola ukuthandwa ethandweni elijwayelekile, izinkampani zekhamera zaqala ukukhiqiza ama-fisheye lens ngombuthano okhulisiwe wesithombe ukumboza lonke uhlaka lwamafilimu olungunxande. Zibizwa ngokuthi i-diagonal, noma kwesinye isikhathi "ngesixa" noma "ozimele" ezigcwele ", izinhlanzi.

Ama-lens we-Diagonal Fisheye aluhlobo lwelensi yezinhlanzi ezingadala ukubuka okubanzi kwe-ultra-velse ngesimo senkambu ye-diagonal yokubuka kwama-degree angama-180 kuya kwangama-190, kanti ama-engeli avundlile nawo amile ayoba mancane. Lawa ma-lens akhiqiza umbono ohlanekezelwe kakhulu futhi oweqisayo, kepha ngokungafani namalensi we-fisheye ayindilinga, agcwalisa lonke uhlobo lwezinzwa lwekhamera noma indiza yefilimu. Ukuthola umphumela ofanayo kumakhamera wedijithali anezinzwa ezincane, ubude bokugxila bufushane buyadingeka.

Umphumela wokuhlanekezela we-diagonalI-Fisheye LensKwakha ukubukeka okuyingqayizivele futhi okumangazayo okungasetshenziswa ngobuciko ngabathwebuli bezithombe ukuthwebula izithombe ezinamandla nezibanjwa iso. Umbono owedlulele ungadala umuzwa wokujula nokunyakaza endaweni yesehlakalo, futhi angasetshenziswa futhi ukudala izingoma ezingaqondakali kanye nezenhlaka.

I-Diagonal Fisheye Lens

I-PORTRAIT NOMA IMITHETHO YOKUGCINA KWESIKHATHI

Umbuthano we-Croppedamalensi we-fisheyeUlunye uhlobo lwe-lens ye-fisheye olukhona, ngaphezu kwenhlanzi eyindilinga kanye namalensi we-fisheye agcwele engiwashilo ngaphambili. Umphakathi phakathi kwe-diagonal kanye ne-fisheye eyindilinga equkethe isithombe esiyindilinga esenzelwe ububanzi befomathi yefilimu kunokuphakama. Ngenxa yalokhu, kunoma iyiphi ifomethi yefilimu engenasikwele, isithombe esiyindilinga sizokwethelwa phezulu naphansi, kepha sisakhombisa imiphetho emnyama ngakwesokunxele nakwesokudla. Le fomethi ibizwa nge-fisheye "Portrait".

Umbuthano-zungelezele ama-fisheye lens

Lawa ma-lens ajwayele ukuba nobude obugxile ku-10-13mm kanye nomkhakha wokubuka kwama-degree acishe abe ngu-180 kwikhamera ye-snor-sensor.

Ama-lens we-Fishere-Ezenzele ama-Fisheye ayindlela engabizi kakhudlwana ngokuqhathaniswa namalensi we-fisheye agcwele, futhi anikela ngombono oyingqayizivele ngokungenisa okujikelezayo.

Amalensi amancane we-fisheye

Amakhamera wedijithali amancane, ikakhulukazi lapho asetshenziswa njengamakhamera okuphepha, avame ukuvame ukuba namalensi we-fisheye ukukhulisa ukumboza. Ama-lens we-fisheye ama-fisheye, anjenge-M12 Fisheye Lens kanye ne-M8 Fisheye Lens, zenzelwe izithombe zefomethi yefomethi esetshenziswa kakhulu kusayizi wefomethi yezokuphepha.Popular Image Sensor esetshenzisiwe . Ngokuya endaweni esebenzayo yenzwa yesithombe, amalensi afanayo angakha isithombe esiyindilinga kwi-sensor enkulu yesithombe (isib. 1/2 "), nohlaka oluphelele kumuntu omncane (isib. 1/4").

Izithombe zesampula ezithunjwe yi-CHACNCCCV's M12amalensi we-fisheye:

Izithombe zesampula ezithunjwe yi-CHACNCCCTV's M12 Fisheye Lens-01

Izithombe zesampula ezithunjwe yi-CHACNCCCTV's M12 Fisheye Lens-02

Izithombe zesampula ezithunjwe yi-CHANCCCTV's M12 Fisheye Lens-03