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Old 10th May 2009   #1
Gerries
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Default Nikkor 105mm VR can't reach f2.8 ... instead lowest is f3

Hi folks,

Any one got this problem?

I will questioning Nikon soon.

Regards,
Gerries
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D700 | 24-70mm f/2.8, 70-200 f/2.8, 105mm f/2.8, SB900 | Sigma 50mm f/1.4
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Old 10th May 2009   #2
rain5533
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Default Re: Nikkor 105mm VR can't reach f2.8 ... instead lowest is f3

haha, nope it's normal for macro lens works.
when i'm 1st time using the 60mm f/2.8D and focus nearess why the aperture will be auto adjust become small aperture.
it's normal one. cause it lens have distance @ 105/60mm that is distance wont be auto adjust aperture.
thx.

Last edited by rain5533; 10th May 2009 at 09:42 PM.
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Old 10th May 2009   #3
AdamK2008
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Default Re: Nikkor 105mm VR can't reach f2.8 ... instead lowest is f3

dear dude,

a quick google reveal that's Nikon's "Close Range Correction" technology working in the lens.
it stops down to enable the crisp sharp photo edge to edge in Close Range.
http://imaging.nikon.com/products/im...kkor/n14_e.htm

if u move back physically, u get back your f/2.8
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Old 10th May 2009   #4
chngpe01
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Default Re: Nikkor 105mm VR can't reach f2.8 ... instead lowest is f3

Nothing wrong with the lens read these threads

http://www.clubsnap.com/forums/showt...stant+aperture

http://www.clubsnap.com/forums/showt...stant+aperture
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Old 10th May 2009   #5
Gerries
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Default Re: Nikkor 105mm VR can't reach f2.8 ... instead lowest is f3

Thanks buddies. I will have a good read of all these posting on this macro lens.

By the way, I took some portrait using this lens yesterday, see posting on Portrait forum, pretty good for the eyes! unlike using the 24-70 mm the focusing on the eyes at 70 mm is too soft.

Good night
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Old 11th May 2009   #6
longkangman
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Default Re: Nikkor 105mm VR can't reach f2.8 ... instead lowest is f3

Originally Posted by Gerries View Post
unlike using the 24-70 mm the focusing on the eyes at 70 mm is too soft.
hmm... I might have to go back and do some testing on the 70mm.
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Old 11th May 2009   #7
YSLee
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Default Re: Nikkor 105mm VR can't reach f2.8 ... instead lowest is f3

Originally Posted by AdamK2008 View Post
dear dude,

a quick google reveal that's Nikon's "Close Range Correction" technology working in the lens.
it stops down to enable the crisp sharp photo edge to edge in Close Range.
http://imaging.nikon.com/products/im...kkor/n14_e.htm

if u move back physically, u get back your f/2.8
That's not how CRC works.
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Old 12th May 2009   #8
ortega
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Default Re: Nikkor 105mm VR can't reach f2.8 ... instead lowest is f3

in the first place why do you want to shoot macro using f2.8?

you also need to note that the aperture goes all the way to f57 at 1:1
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Old 12th May 2009   #9
ZeroDivine
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Default Re: Nikkor 105mm VR can't reach f2.8 ... instead lowest is f3

normal actually
the tamron also goes to F/3 at macro distance
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Old 16th May 2009   #10
sf_kang
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Default Re: Nikkor 105mm VR can't reach f2.8 ... instead lowest is f3

If I were you, I would not worry about the f2.8 aperture setting becoming f3.0. And unless you're looking for shallow depth-of-field, most macro work would be shot with much smaller apertures, e.g. f16, f22 or even smaller.

But just to address your question why the f2.8 became f3. This is cause by the effect of 'light fall off'. And this is more evident when shooting close or at the 1:1 reproduction. Those buddies who have played with 'bellows' to get extreme closeup shots would understand this 'light fall off' effect and would have compensated for it in the exposure settings.

Don't worry. There is nothing wrong with your lens.

Fred
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