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Chromatic Abberation?

This is a discussion on Chromatic Abberation? within the Lighting Discussion forums, part of the Photography Information category; I bought my first roll of seamless paper yesterday, and set it up very quickly in the garage a little ...

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Chromatic Abberation? - 04-18-2010, 05:33 PM


I bought my first roll of seamless paper yesterday, and set it up very quickly in the garage a little while ago. I'm using an AB1600 on 1/2 power to camera left as my main, and an AB800 1/2 power as fill to camera right.

These were both shot at ISO160, f16, and 1/250th.

My question is... whats the black line, or black fading on the right of the portrait, or bottom of the landscape? Is this a form of chromatic abberation, or is this the beginning (or end) of the shutter curtain due to sync speed?
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04-18-2010, 05:36 PM


Did you try a slower shutter? 1/250 seems a bit fast!

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04-18-2010, 05:37 PM


mmm...nope. But I'll go do that in a minute.

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04-18-2010, 05:45 PM


Nikon sync speed is 200 ????
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04-18-2010, 05:45 PM


I'll bet it's the shutter. I typically do studio work at 1/125.

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04-18-2010, 05:47 PM


Quote:
Originally Posted by CaptainTom View Post
Nikon sync speed is 200 ????
The D90 has a 1/200 sync speed, but other models have faster sync speeds.

(according to nikonusa.com)

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04-18-2010, 05:48 PM


keep in mind that with flash your shutter speed only affects the amount of ambient light in the image, and not the exposure.
The exposure is a result of the amount of the flash (flash duration) and the aperture.
Take a test of shooting something with the flash at the same power, but using different shutter speeds (up to and then past the max. synch speed for your camera).
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04-18-2010, 06:20 PM


Its the shutter speed. 1/125th works a lot better.

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