Nā aniani kihi ākeahāʻawi i kahi kahua ākea o ka ʻike, e hiki ai iā ʻoe ke hopu i kahi lani pō ākea a me nā kikoʻī paʻakikī o ka Milky Way i ke kiʻi ʻana i nā hōkū. No laila, pehea ʻoe e koho ai i ka lens kihi ākea kūpono i ke kiʻi ʻana i ka lani hōkū?
ʻO ke koho ʻana i ka lens kihi ākea kūpono e pono ai ka noʻonoʻo ʻana i kekahi mau kumu. E nānā kākou i nā kumu nui e hoʻohuli ai:
1.Koho ʻana i ka lōʻihi o ke kikowaena
ʻO ka lōʻihi o ke kikowaena o 14-24mm ka lōʻihi o ke kikowaena maikaʻi loa no nā aniani ākea e pana i ka lani hōkū. Hiki iā ia ke hopu i ka Milky Way holoʻokoʻa me ka hōʻoia ʻana i ka maikaʻi o ke kiʻi ma nā kihi e maopopo ana, e kūpono ana no ke pana ʻana i nā hiʻohiʻona panoramic o ka Milky Way a me nā hiʻohiʻona e hoʻohui i nā kahua hōkū me nā ʻāina.
Eia kekahi laʻana, ʻo ka hoʻohana ʻana i ka lōʻihi focal 14mm e hiki ai iā ʻoe ke kiʻi i kahi lani ākea a hopu i ka ʻike piha o ka Milky Way, ʻoiai ʻo ka hoʻohana ʻana i ka lōʻihi focal 24mm e hiki ai iā ʻoe ke hopu i nā mea hou aku o ke kahua.
2.Koho puka
I ke kiʻi ʻana i ka lani hōkū, ʻoi aku ka maikaʻi o ke koho ʻana i kahi aniani kihi ākea me ka puka nui loa, no ka mea, he pono nui ka puka nui i nā wahi haʻahaʻa kukui. Hōʻoia ka puka ākea i ka lawa ʻana o ka mālamalama, e pale pono ana i nā ala hōkū me ka ʻae ʻana i kahi hoʻonohonoho ISO haʻahaʻa—no laila e hōʻemi ana i ka walaʻau a loaʻa nā kiʻi me ka maopopo a me ka maʻemaʻe.
I ke kiʻi ʻana i ka lani hōkū, ua ʻōlelo ʻia e koho i ka puka kiʻekiʻe loa o F2.8 a ʻoi aku paha. ʻO F2.8 kahi kumu kūpono no ka hapa nui o nā hiʻohiʻona, ʻoiai ʻo F1.4-1.8 ka mea maikaʻi loa a kūpono no nā wahi haʻahaʻa kukui.
I ke kiʻi ʻana i ka lani hōkū me kahi aniani kihi ākea, pono e noʻonoʻo ʻia ka puka
3.Ka mana o ka maikaʻi o ke kiʻi
Nā aniani kihi ākeahe maʻalahi i nā pilikia chromatic aberration a me ka barrel distortion; pono i kahi lens maikaʻi loa ke kāohi maikaʻi i ka chromatic aberration a me ka distortion. I ke kiʻi ʻana i ka lani hōkū, inā ʻaʻole ka lens e kāohi maikaʻi i ka chromatic aberration, hiki ke ʻike ʻia ka poni poni a puni nā hōkū, ʻoiai ʻo ka distortion e hoʻopilikia i ke kiʻi, e hoʻopilikia ana i ka hopena holoʻokoʻa.
No laila, he mea nui e koho i kahi aniani e hōʻike ana i ka mana maikaʻi loa ma luna o ka aberration chromatic a me ka distortion. Eia kekahi, he mea nui e koho i kahi aniani hoʻonā kiʻekiʻe e hōʻoia i ka ʻike ʻia ʻana o nā hōkū me he mau kiko maopopo a ʻoi, e pale ana i ka blurriness.
4.Ka nānā pono ʻana o ka lima
I nā wahi pōʻeleʻele, lilo ka hana autofocus o ke kāmela i mea ʻole, e pono ai ka hoʻoponopono ʻana i ka nānā lima—ʻo ia hoʻi, ke kau ʻana i ke apo focus i ka māka infinity (∞). Eia nō naʻe, he mea nui e hoʻomaopopo he pinepine ka hōʻailona infinity ma ka unahi mamao o ka lens e hōʻike i nā hewa iki i ka hana a ʻaʻole hiki ke hilinaʻi wale ʻia.
No laila, he mea nui e koho i kahi aniani me ka damping apo focus kaulike a me kahi huakaʻi lōʻihi e maʻalahi ai ka hoʻoponopono ʻana i ka focus pololei a e hōʻoia i ka maopopo a ʻoi o nā hōkū.
ʻO ke kiʻi ʻana i ka lani hōkū me kahi aniani ākea e koi pinepine i ka hoʻoikaika lima ʻana
5.Kaumaha a me ka nui
Inā pono ʻoe e lawe i kaanianii waho no ka manawa lōʻihi, pono ʻoe e noʻonoʻo i ke kaumaha a me ka nui o ka lens. No ka laʻana, i ka wā e lawe ana i nā lako no nā hana waho e pono ai ka manawa lōʻihi, e like me ka piʻi mauna a i ʻole ka hele wāwae, he mea nui e koho i kahi lens me kahi hoʻolālā māmā i hiki iā ʻoe ke hele māmā a hōʻemi i kāu kaumaha.
Eia kekahi, pono e koho i kahi lens kūpono e pili ana i kāu kālā. Inā he kālā nui kāu, hiki iā ʻoe ke koho i kahi lens kiʻekiʻe; akā naʻe, inā palena kāu kālā, ʻoi aku ka maikaʻi o ke koho ʻana i kahi lens e kūpono i kāu mau koi pana pua maʻamau.
Nā Manaʻo Hope Loa:
Inā makemake ʻoe e kūʻai i nā ʻano aniani like ʻole no ka nānā ʻana, ka scan ʻana, nā drones, ka home akamai, a i ʻole kekahi hoʻohana ʻē aʻe, loaʻa iā mākou nā mea āu e pono ai. E kāhea mai iā mākou i kēia lā e aʻo hou e pili ana i kā mākou mau aniani a me nā mea pono ʻē aʻe.
Ka manawa hoʻouna: Mei-06-2026
