Nikon 17-55f2.8g的問題

Question

最近買了號稱Nikon鏡王17-55 f2.8g,拍攝了一批一百六十人的團體相,用F6.7光O)但焦距大約用20,但相片周邊的人都比較散,WHY?F6、7光O也不算是大光O吧!理應不是這效果的?是否這支鏡名不符實?

相機距最前行的人約25尺

body: fuji S 3pro , 快門 90 , 光圈F6.7 ,ISO 200 4x500ws flash, indoor(shool hall)

Answer 1

The review below stated that it is not a very good deal from this pricy lens ...
http://www.kenrockwell.com/nikon/1755.htm
However, for 一百六十人的團體相, you need very good coordination and ISO handling, depends on what lighting you have ... indoor/outdoor, flash ... studio lighting etc ... is very important ...
F6 and F7 depth of field should be enough even for landscape ...
and 20mm should be ok too.
I think right now it is the shutter speed ... or if you have a nice tripod to handle
the exposure time ...
hope all help

2007-03-24 04:32:28 補充：
not enough DOF, you need something like F8-F10, and tone to ISO 400,
the 1/90 shutter is too fast .... you need something like 1/30, 1/40, 1/60 ... depends the crowd is active or not, to get more face feature ...
and the tripod is a MUST ! and take 2 to 3 shots...