Question about Nikon D70 Digital Camera with 18-50mm Lens

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Shadow on image when using built-in Speedlight

I sometimes get a round, dark area on the bottom of my pictures when I use the built-in flash. What is this caused by and how can I remove it?

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Re: Shadow on image when using built-in Speedlight

The built-in Speedlight on many Nikon cameras is designed to be a convenient way to either light up a dark subject or to add fill light to a daytime scene. The built-in Speedlight cannot replace a full size, external speedlight which should be used when more power or coverage are needed. Because the built-in Speedlight is compact and close to the camera it cannot be used under all conditions. When using a lens that is physically very long, a subject that is very close, or a wide lens hood it is possible that a shadow may be cast upon the subject. Notice, in the sample below, the round shadow in the bottom center of the photo. When the lens is too long or the coverage is too wide with a close subject a shadow of the lens itself is cast. In figure "A" below the lens is casting a shadow. Switching (or zooming) to a shorter lens (figure "B") prevents the shadow and allows even illumination. If your lens, subject, or lens hood choice create a shadow, an external flash (either on the camera's hot-shoe or connected to the camera by a wire or wirelessly) should be used to fully light the subject.

Posted on Aug 30, 2005

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Look carefully at your images taken with flash... on the horizontal image is the lower part of the image slighty darker and have a rounded fall off at the edges? Is the vertical image dark side a straight hard line or is there a rounding to the top and bottom?

What we are looking at is if you have a very wide angle lens with the lens shade attached to the lens, then the built-in flash catches part of the lens shade and make a shadow on your subject... take the lens shade off and try the same shot and see if that makes a difference...

Have a great day...

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http://www.diyphotography.net/diy-built-in-pop-up-flash-diffuser

http://www.flickr.com/photos/natuurplaat/10362363/

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also, could need to check for auto sync speed setting. usually 1/125 to 1/60. if its off, it could be catching the shutter in the wrong place.
check manual for settings for using flash.
mark

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