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Old Dec 12, 2004, 6:09 PM   #1
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I'm guessing that the focus assist lamps on the SB800 flash are more powerful than the one built into the D70. Anyone know the facts on that? I don't see ref. to it in the manual specs.


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Old Dec 12, 2004, 9:13 PM   #2
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From actual experience in weddings, the SB800 will help focus until about 18 feet (given an f/2.8 lens and very dim lighting). The AF assist lamp on the D70, not sure how it differs from the D100's, should be plenty strong, stronger than the SB800's. The problem is that lamp will be blocked when using certain lenses, specially pro grade, teles and ultrawide lenses. Also, because the light is very bright and nearly white, it's very conspicuous and not useful for times when you need/want to not bother the subject for the shot (ie. candids). If you have a brighter lens, say f/2 or brighter, focusing will be easier.
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Old Dec 12, 2004, 10:03 PM   #3
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The red LEDs on the speedlight provides much better peformance with low contrast subjects too. Eg. focusing on a featureless blank wall, even with the AF assist on, the lens will struggle most times. With the red LEDs of the speedlight, it zooms into place first time, every time.

And as marokero mentioned, it's far less intrusive than the white blinding light on the body.
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