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Distant Focusing for Accurate Exposure Reading

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HPB

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Given: Nikon D100 with AF lens 70-300mm Zoom lens.

Is is possible to focus on a distant object at 300mm and hold the exposure reading and then pull back to the 70mm range and take the photo. Would it be more accurate on the distant object as compared to taking the photo at the 70mm range?

I saw this approuch on a TV show called "Photo Safari".

HPB
 
HPB said:
Given: Nikon D100 with AF lens 70-300mm Zoom lens.

Is is possible to focus on a distant object at 300mm and hold the
exposure reading and then pull back to the 70mm range and take the
photo. Would it be more accurate on the distant object as compared
to taking the photo at the 70mm range?

I saw this approuch on a TV show called "Photo Safari".

HPB
Click to expand...
--you can do this with the el button on the d100.
c.johnson
 
I'm not exactly sure if this is applies, but I believe if a lens has focus creep, as you change from one focal range to another, the focus may also change. So I guess it depends on what lens you have.
HPB said:
Given: Nikon D100 with AF lens 70-300mm Zoom lens.

Is is possible to focus on a distant object at 300mm and hold the
exposure reading and then pull back to the 70mm range and take the
photo. Would it be more accurate on the distant object as compared
to taking the photo at the 70mm range?

I saw this approuch on a TV show called "Photo Safari".

HPB
Click to expand...
--
You cannot perceive beauty but with a serene mind
 
Depending on your specific situation, it might be easiest to just set the meter to "spot metering"...

alternately, you can set the Focus-Lock/Exposure-Lock button (located next to the viewfinder) to Lock the Exposure (one of the custom settings) while you recompose and refocus with the shutter release button.

-m
HPB said:
Given: Nikon D100 with AF lens 70-300mm Zoom lens.

Is is possible to focus on a distant object at 300mm and hold the
exposure reading and then pull back to the 70mm range and take the
photo. Would it be more accurate on the distant object as compared
to taking the photo at the 70mm range?

I saw this approuch on a TV show called "Photo Safari".

HPB
Click to expand...
 
I agree with both Mike and Apolinari's post.

1) Use Spot metering for accuracy

2) Make sure you have a fixed aperture lens such as 80-200 F/2.8 ED D lens so that the aperture won't change as you zoom in or out.
Mike Sommers said:
alternately, you can set the Focus-Lock/Exposure-Lock button
(located next to the viewfinder) to Lock the Exposure (one of the
custom settings) while you recompose and refocus with the shutter
release button.

-m
HPB said:
Given: Nikon D100 with AF lens 70-300mm Zoom lens.

Is is possible to focus on a distant object at 300mm and hold the
exposure reading and then pull back to the 70mm range and take the
photo. Would it be more accurate on the distant object as compared
to taking the photo at the 70mm range?

I saw this approuch on a TV show called "Photo Safari".

HPB
Click to expand...
Click to expand...
--
--------------------------------------------------------------
http://www.pbase.com/nikonslr
Only take your pictures with a SLR please.... !
 
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