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Farmington Hills, US
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"RE: D4 Focusing"

gpoole Platinum Member Fellow Ribbon awarded for his excellent and frequent contributions and sharing his in-depth knowledge and experience with the community in the Nikonians spirit. Awarded for his very generous support to the Fundrasing Campaing 2014 Writer Ribbon awarded for his article contributions for the Articles library and the eZine Nikonian since 14th Feb 2004
Sat 16-Feb-13 08:59 PM

Actually florescent lights cycle at twice the power frequency, so in North America the critical time is 1/120 sec.

I certainly have noticed the cycling shooting bursts at indoor ice hockey and nighttime HS football. For both these I shot at 1/500 or faster. Because the cycling is so fast the correct exposure can change between metering and the shutter opening. Color temperature will cycle too.

Gary in SE Michigan, USA.
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A topic tagged as in need of help D4 Focusing [View all] , 70buddy , Sat 16-Feb-13 03:27 AM
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