請教大家快門的問題.

係相機廠拎黎show off架咋.
除非你打算影milk ring/crown, 即係一滴奶滴落一杯牛奶時, 牛奶花會好似皇冠咁平均咁以圓形散開咁呢o的短時間之餘又快速度既事物至用.
講真影F1都係1/1000之麻.
而且去到1/250或更短既快門時,
閃光燈已經跟唔到, 所以再快就唔會閃.
至於快門選擇時, 其主要由當時光圈同陽光去決定,
好似去沙灘, 好猛太陽, 但係又用F2.8希望個景深夠淺,
咁除左用到1600快門之外仲有咩計丫~
所以如果你話1000快門會暗, 咪唔好鬼用囉.

You have to look at that.
http://hk.myblog.yahoo.com/since2000photography/article?mid=353&fid=9
http://hk.myblog.yahoo.com/since2000photography/article?mid=248&fid=5

what's wrong with that !!

Strong sunny day 1/250 with f/8 in ISO 100
Change to ISO 400 ( + 2 stop ) = 1/1000 with f/8
Slow down the f number 3 stop = 1/8000 with --- f/8 --- f/5.6 --- f/4 --- f/2.8 ---

2007-06-06 18:52:52 補充：
In 1/8000 sec shutter speed, water look like crystal ( always look like hard ).

其實真係好小用,我諗到的係要來涷結一啲好快既動作例如子彈呀,水花呀咁,又或者己經好光但又要開到勁大光圈做淺景深等等.
曝光時間短唔一定暗架,只要現場夠光就得.用iso 400開大光圈,在大太陽下絶對可以突破1/8000s.
冇錯內閃係會受同步快門限制,1/250s其實己經唔算慢,真係要冇限制的話可以買個有高速同步功能的外閃,咁就幾快都得,但係要留意越快火力會下降越多,這意味閃燈有效距離會越近.