像nikon p1000這種鏡頭是如何解決衍射問題的?
雖然nikon p1000不是DSLR
但這個問題困擾我很久了,
p1000是 1/2.3"感光元件,1676萬畫素,
這密度換算成全幅約為5億畫素,最遠端539mm光圈f/8,實體光圈約為67.375mm
5億畫素,光圈f/8,可是看大家照月亮的細節還是很不錯
nikon到底是怎麼造出解析度那麼高的鏡頭的,當艾里斑不存在嗎?沒有在遵守物理限制
的嗎?
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推
05/01 21:19,
2周前
, 1F
05/01 21:19, 1F
最小艾里斑直徑=2.44x光波長x(焦距/光圈直徑) 最後那一項就是光圈值啦,所以不是看
光圈
實體直徑,是看光圈值
推
05/01 21:28,
2周前
, 2F
05/01 21:28, 2F
跟p1000比不確定耶!現在的手機光圈都很大,底也越用越大了
※ 編輯: archangel (114.34.219.241 臺灣), 05/01/2024 22:22:56
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05/01 22:30,
2周前
, 3F
05/01 22:30, 3F
我算了一下,p1000光圈開f/8,相當於一個6847萬畫素的全幅機開f/22的情況耶!應該會蠻糊的才是啊?
推
05/01 22:34,
2周前
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05/01 22:34, 5F
因為125倍變焦!還有最遠的實體焦距為539mm,f/8跟 100-400mm,f 5.6-8差不多很合理啊
※ 編輯: archangel (114.34.219.241 臺灣), 05/01/2024 23:00:40
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拜託不要歪樓
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※ 編輯: archangel (114.34.219.241 臺灣), 05/02/2024 13:58:59
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