Nikon Lens Question ED-IF

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DS - 03 Jul 2006 21:25 GMT

Hi,

I underdtand that ED in Nikon lens numbers designates the glass. What is
the difference between ED and ED-IF? I was looking at a f/2.8 AF ED lens
for a D200 and wondering how it would perform on motion shots? Is there are
website that clarifies all this?

Thanks!

Dave

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Rebecca Ore - 03 Jul 2006 21:26 GMT

> Hi,
>
> I underdtand that ED in Nikon lens numbers designates the glass. What is
> the difference between ED and ED-IF? I was looking at a f/2.8 AF ED lens
> for a D200 and wondering how it would perform on motion shots? Is there are
> website that clarifies all this?

IF is internal focus. This means that your fingers won't find the
lens writhing under them as the lens autofocuses.

Signature

Rebecca Ore

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nospam - 03 Jul 2006 22:04 GMT

<http://nikonimaging.com/global/products/lens/glossary2.htm>

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Bill - 03 Jul 2006 22:08 GMT

>Hi,
>
>I underdtand that ED in Nikon lens numbers designates the glass. What is
>the difference between ED and ED-IF? I was looking at a f/2.8 AF ED lens
>for a D200 and wondering how it would perform on motion shots? Is there are
>website that clarifies all this?

Try this site for all-things Nikon:

http://www.nikonians.org/html/resources/photography-glossary.html

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Ed Ruf (REPLY to E-MAIL IN SIG!) - 03 Jul 2006 22:25 GMT

>I underdtand that ED in Nikon lens numbers designates the glass. What is
>the difference between ED and ED-IF? I was looking at a f/2.8 AF ED lens
>for a D200 and wondering how it would perform on motion shots? Is there are
>website that clarifies all this?

IF is internal focus, meaning the lens does not change length while
focusing. The AF means the focusing is driven by the camera, not a motor
(AF-S) in the lens itself. An AF lens will not be as fast focusing as an
AF-S lens. Whether or not this matters to you depends upon your intended
subject.
--
Ed Ruf (Usenet2@EdwardG.Ruf.com)
http://edwardgruf.com/Digital_Photography/General/index.html

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DS - 04 Jul 2006 21:33 GMT

Alot of great information! Thanks so much!

Dave

> Hi,
>
[quoted text clipped - 6 lines]
>
> Dave

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