Question about Nikon Cameras
I've seen this lens describes as "an excellent performer for UV, with no focus shift" but I've also been told that "Apo Nikkors do max. 380nm (which is just 20nm into UV), so cannot be called useful for UV." I'm guessing that there is some fall off in UV transmission below 380nm, but still enough to make it useful for art UV photography using longer exposure times. Anyone care to comment?
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Posted on Jan 02, 2017
SOURCE: consistent under exposure
Under exposed should be minus not plus number.
Lucky you didn't buy Canon 5D or 1D- they have focus and exposure problems.
Hope you are not using the pop flash that is on the camera. If you are, then turn off the Red Eyes Modes.
Set camera to manual mode and lower the F number(open up to half or one stop).
What studio lights are you using? Increased the light output of studio by those number and shoot like you normally do.
Posted on Dec 23, 2007
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Posted on Nov 10, 2008
SOURCE: I have a Sigma 50-500mm
George, First check the settings on the front of the camera and the lens if it has them, they have to be set on auto, not manual, The Nikon lenses have a button, the camera has a button, next to the lens release button. It should be AF or a just A. for auto focus. Now,, your sigma might not have all the stuff that the Nikon lens' have, some have a little blade sticking out that turns the focus ring, some are electronic, some have the motor inside like you said. Now I'm not sure about yours, but it should work, did you try another lens to see if it was the camera? If it is the lens, I would take it back, or learn to focus manually. Some of those lens' are manual focus only. Hope this helps.
Posted on Oct 26, 2010
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