He aha ka aLeni Fisheye? Hiki i nā lens fisheye ke hopu i kahi ākea ākea o ka nānā ʻana, pinepine a hiki i 180 degere a ʻoi aku paha, e hiki ai i ka mea paʻi kiʻi ke kiʻi i kahi wahi nui loa o ka hiʻohiʻona i ka pana hoʻokahi.

ʻO ka maka iʻa

Kapa ʻia nā lens fisheye ma muli o ko lākou hopena distortion kūʻokoʻa, e hana ana i ke kiʻi pōʻai a i ʻole ke ʻano barela i hiki ke hoʻonui a hoʻonui ʻia. Hoʻokumu ʻia ka hopena distortion ma ke ʻano o ka lens e hoʻohuli i ka mālamalama i kona hele ʻana i nā mea aniani curved o ka lens. Hiki ke hoʻohana ʻia kēia hopena e nā mea paʻi kiʻi e hana i nā kiʻi kūʻokoʻa a me ka ikaika, akā hiki ke lilo i palena inā makemake ʻia kahi kiʻi kūlohelohe.

Loaʻa nā lens maka iʻa i nā ʻano like ʻole, e like me nā lens circular fisheye, cropped-circle fisheye lenses, a me nā lens fisheye piha. Loaʻa i kēlā me kēia ʻano lens maka iʻa kona mau hiʻohiʻona ponoʻī a kūpono i nā ʻano kiʻi like ʻole.

ʻAʻole like me nā lens rectilinear,nā maka iʻaʻAʻole ʻike piha ʻia e ka lōʻihi o ke alo a me ka puka wale nō. ʻO ka huina o ka nānā, ke anawaena kiʻi, ke ʻano projection, a me ka uhi sensor ʻokoʻa ʻokoʻa i kēia mau mea.

Nā ʻano o ka hoʻohana ʻana i ke ʻano

Nā maka iʻa pōʻai

ʻO ke ʻano mua o nā maka iʻa i hoʻomohala ʻia ʻo ia nā lens "circular" i hiki ke hana i kahi kiʻi pōʻai me kahi kahua ʻike 180-degree. He pōkole loa ko lākou, mai ka 7mm a hiki i ka 10mm, e hiki ai iā lākou ke hopu i kahi hiʻohiʻona ākea ākea o ka hiʻohiʻona.

Poʻai maka iʻa

Hoʻolālā ʻia nā lens maka iʻa e hana i ke kiʻi pōʻai ma luna o ka mea ʻike kiʻi a i ʻole ka mokulele kiʻiʻoniʻoni. ʻO ke ʻano o ke kiʻi i loaʻa i ke ʻano pōʻai me nā palena ʻeleʻele e hoʻopuni ana i ka ʻāpana pōʻai, e hana ana i kahi hopena "fishbowl" kūikawā. E ʻeleʻele loa nā kihi o ke kiʻi iʻa pōʻai. He ʻokoʻa kēia ʻeleʻele mai ka hoʻomaka ʻana o nā lens rectilinear a hoʻomaka koke. Hiki ke hoʻohana ʻia ke kiʻi pōʻai e hana i nā haku mele hoihoi. Loaʻa iā lākou he 180° kūpaʻa, ākea a me ke kihi diagonal o ka ʻike. Akā hiki ke lilo i palena inā makemake ka mea paʻi kiʻi i ka lākiō hiʻohiʻona rectangular.

Kaapuninā maka iʻahoʻohana maʻamau i nā kiʻi noʻonoʻo a me nā kiʻi noʻeau, e like me ke kiʻi hale kiʻi, kiʻi abstract, a me nā kiʻi haʻuki koʻikoʻi. Hiki ke hoʻohana ʻia no nā noi ʻepekema a me ka ʻenehana kahi e koi ʻia ai ka ʻike ākea ākea, e like me ka astronomy a i ʻole microscopy.

Nā lens maka iʻa diagonal (aka piha piha a ʻehā paha)

I ka lilo ʻana o nā lens maka iʻa i mea kaulana i nā kiʻi maʻamau, ua hoʻomaka nā hui kiʻi paʻi kiʻi e hana i nā lens maka iʻa me kahi pōʻai kiʻi i hoʻonui ʻia e uhi i ke kiʻi ʻoniʻoni ʻehā holoʻokoʻa. Kapa ʻia lākou he diagonal, a i ʻole he "rectangular" a i ʻole "full-frame", fisheyes.

He ʻano lens fisheye diagonal i hiki ke hana i kahi hiʻohiʻona ultra-wide-angle o kahi hiʻohiʻona me kahi kahua diagonal o ka 180 a 190 degere, ʻoiai e liʻiliʻi nā kihi ākea a me ke kūpaʻa. Hoʻopuka kēia mau lens i kahi hiʻohiʻona ʻokoʻa a hoʻonui ʻia, akā ʻaʻole like me nā maka iʻa pōʻai, hoʻopiha lākou i ke kiʻi ʻehā holoʻokoʻa o ka mea ʻike a i ʻole ka mokulele kiʻiʻoniʻoni. No ka loaʻa ʻana o ka hopena like ma nā kikohoʻe kikohoʻe me nā mea ʻike liʻiliʻi, pono ka lōʻihi o ke kiko.

Ka hopena distortion o kahi diagonalmaka iʻahana i kahi hiʻohiʻona kūʻokoʻa a hoʻokani i hiki ke hoʻohana ʻia e nā mea paʻi kiʻi e kiʻi i nā kiʻi hoʻoikaika a me nā kiʻi. Hiki i ka manaʻo hoʻonui ke hana i ka hohonu a me ka neʻe ʻana i kahi hiʻohiʻona, a hiki ke hoʻohana ʻia no ka hana ʻana i nā mele abstract a surreal.

Leni maka iʻa diagonal

Kiʻi a i ʻole nā ​​lens maka iʻa

pōʻai-pōʻainā maka iʻahe ʻano ʻano lens maka iʻa ʻē aʻe i loaʻa, ma waho aʻe o ka maka iʻa pōʻai a me nā maka iʻa piha piha aʻu i ʻōlelo ai ma mua. ʻO kahi waena ma waena o ka diagonal a me ka iʻa pōʻai he kiʻi pōʻai i hoʻopaʻa ʻia no ka laulā o ke ʻano kiʻiʻoniʻoni ma mua o ke kiʻekiʻe. ʻO ka hopena, ma nā ʻano kiʻiʻoniʻoni like ʻole, e ʻoki ʻia ke kiʻi pōʻai ma luna a ma lalo, akā e hōʻike mau ana nā ʻaoʻao ʻeleʻele ma ka hema a me ka ʻākau. Kapa ʻia kēia ʻano he “portrait” fisheye.

Leki iʻa pōʻai pōʻai

Loaʻa ka lōʻihi o kēia mau lens ma kahi o 10-13mm a me kahi kahua o ka nānā ʻana ma kahi o 180 degere ma kahi kāmela crop-sensor.

ʻO nā lens fisheye cropped-circle kahi koho ʻoi aku ka maʻalahi e hoʻohālikelike ʻia me nā lens fisheye piha piha, a hāʻawi lākou i kahi hiʻohiʻona kūʻokoʻa me ka hopena distortion circular.

Nā lens maka iʻa liʻiliʻi

ʻO nā kiʻi paʻi kiʻi liʻiliʻi, ʻoi aku ka nui o ka wā i hoʻohana ʻia e like me nā kiʻi paʻi kiʻi palekana, loaʻa pinepine nā lens maka iʻa e hoʻonui i ka uhi. Hoʻolālā ʻia nā lens maka iʻa liʻiliʻi, e like me M12 fisheye lenses a me M8 fisheye lenses, no nā kiʻi kiʻi liʻiliʻi liʻiliʻi i hoʻohana mau ʻia i nā pahu kiʻi palekana. . Ma muli o ka ʻāpana hana o ka mea ʻike kiʻi, hiki i ka lens like ke hana i ke kiʻi pōʻai ma luna o kahi mea ʻike kiʻi nui (e laʻa me 1⁄2″), a me kahi kiʻi piha ma kahi liʻiliʻi (e laʻa 1⁄4″).

Nā kiʻi laʻana i hopu ʻia e CHANCCTV's M12nā maka iʻa:

Nā kiʻi laʻana i hopu ʻia e nā lens maka iʻa M12 o CHANCCTV-01

Nā kiʻi laʻana i paʻi ʻia e ka CHANCCTV's M12 fisheye lens-02

Nā kiʻi laʻana i hopu ʻia e nā lens maka iʻa M12 o CHANCCTV-03