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Master Member
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引用:
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作者cetranet
因為K-3的感光元件還沒有內建PDAF（相位對焦）呀
（k-3ii可能就會有，如果還會出K-3ii的話ＸＤ）
LV對焦就不是用那個可以到-3EV的對焦系統對焦了
是單純用對比對焦 (CDAF)
暗部對比不高當然會迷焦呀
不能用有PDAF的感光元件的機身來跟沒有的比呀
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7D跟D7100的ＬＶ暗部應該更慘
D7100
[youtube]hle1rNZzLwc[/youtube]
引用:
In live view mode the D7100 uses contrast-detection autofocus, which allows for a continuous live view feed that doesn't black out during focus acquisition. The trade-off, however, is that the D7100's contrast-detect AF is much slower than the phase detection AF used in its through-the-viewfinder shooting mode. In fact, like all current DSLRs, the D7100's contrast-detection AF acquisition in live view is sluggish compared to most every mirrorless camera we've used recently. To be fair though, we imagine that for many D7100 users, live view will be reserved primarily for critical focus applications like landscapes, still lifes and product photography, where maximum AF speed is much less important than accuracy.
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7D 00:20左右
完全無法合焦 這還不算暗部吧
[youtube]fISpz_2UxXo[/youtube]
要彌補沒有高速快門
不縮光圈的話就得加減光鏡了
誒原來您是嫌咬住時間太短？
即使調到最強也太短？那我就不知道了
的確在追焦演算法跟鏡頭的對焦速度
這塊pentax目前還落後C&N家
就等這支新的DFA70-200mm看能不能搬回一成了 |