HKBWS BBS 香港觀鳥會新聞組


    
      
        HKBWS BBS 香 港 觀 鳥 會 新 聞 組
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        Special Topics 特別主題 >> Tern Conservation 燕鷗保育 >>  Black-naped Tern Inflight - II　飛行中的黑枕燕鷗 II
        
(Message started by: KK Hui on Jul 25^th, 2006, 4:18pm)

Title: Black-naped Tern Inflight - II　飛行中的黑枕燕鷗 II
Post by KK Hui on Jul 25^th, 2006, 4:18pm

http://img.photobucket.com/albums/v22/kkhui/Avian/230706_04x.jpg
Black-naped Tern Sterna sumatrana

Eastern Water of Sai Kung
23/07/2006

Another flight shot taken couple of days ago on board of a rocking boat. The day turned out to be both sunny and clear!

For exposing white birds under this condition one can use the Sunny 16 rules and dail in an exposure compensation of -1/3 EV as in this case. Alternatively, you can meter off an area of mid-tone using in-camera reflective meter. Take a test shot and check exposure using histogram. I tend to expose white for 1/3 less since any blown white won't be recoverable even in RAW! Remember the rules would work best when the subject is mid-tone and front lit; two hours after sunrise and two before suset.

Hope this sharing of experience would help others!

EOS-1D Mk II, EF400/5.6L
Evaluative @ -1/3 EV, ISO 200, 1/2000s, f/5.6

KK Hui FRPS
www.geocities.com/kkhui_001

Title: Re: Black-naped Tern Inflight - II
Post by Forrest FONG on Jul 25^th, 2006, 8:50pm

Hi KK,

Thanks a lot for your valuable sharing. ::) :D

Cheers,

Forrest ;D