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What's with the 1/200 sec flash sync speed?

gpoole

Farmington Hills, US
4133 posts

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"RE: What's with the 1/200 sec flash sync speed?"

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
Tue 18-Sep-12 12:03 AM

Sorry for being pedantic in the following, but there are a lot of confusing things in your statement and other statements above.

The difference between 1/250 and 1/200 changes cannot change the amount of fill. The flash dumps its light in 1/1000 or faster. The amount of light supplied by the flash doesn't change between 1/250 and 1/200.

What does happen is that the shutter speed change allows more ambient light by 1/3 stop. This means that for the same flash output the fill to ambient ratio by decreases by 1/3 stop. This becomes a problem if the flash was at full power with an ambient exposure at 1/250.

Gary in SE Michigan, USA.
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This is a hot, active topic! What's with the 1/200 sec flash sync speed? [View all] , BR , Thu 13-Sep-12 10:34 PM
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