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Hi all. i have a problem with my tele lens (bower 650-1300). i wont let me to do any settings except for shutter in manual exposure mode. i have a nikon D90. is there anyone has an idea what im supposed to do? thank you

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Well first you don't have any problem here !

The Bower is a really different lens from your usuall one... is is manual focus, and it doesn't have a diaphragm, or a electrical contact to your camera.

What this means is that you can't change aperture because the lens aperture is fixed at a certain focal range: f8 at 650mm to f16 at 1300mm.
So it is entierly normal that you can't change it on your camera, in fact for your camera point of view, there isn't any lens on it.

Thus the only parameters you can change are the shutter speed, and the iso, because they are the only parameter changeable in your camera body.

Hope this helps.
And good shooting !

Posted on May 27, 2011

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