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I am having trouble interpreting the letter notation that is used for nikon lens. can someone direct me to a site where the different letters are explained.

thank you

There are heaps of pages out there, but these links might help:

http://nikonimaging.com/global/products ... ssary2.htm
http://www.nikonlinks.com/unklbil/nomenclature.htm
http://www.nikonians.org/nikon/slr-lens.html
http://www.digitaldingus.com/d100lounge ... lature.php

Cheers

It's pretty simple really ...

AF - Auto-focus. Uses a motor mounted in the camera; unsuitable for AF use on a D40
AF-S - Auto-focus with a silent wave motor. The motor is mounted in the lens. AI - Aperture Index (now basically obsolete)
D - Can report focus distance to the camera CPU
G - No aperture ring. Many newer lenses have this designation.
DX - Made for crop sensor cameras.
ED - Contains extra low dispersion glass elements. These elements help to reduce optical aberrations of various types.
IF - Internal focusing.
PC - Perspective control.
DF - (I think) Defocus - Throws certain areas of the projected image out of sharp focus.

What have I forgotten?

Thom Hogan's site not only explains the acronyms, but also indicates which lenses will work on which camera:

http://www.bythom.com/lensacronyms.htm

gstark wrote:It's pretty simple really ...

.....

What have I forgotten?

I think there is also a new one 'N' for Nano-Crystal coating isn't there?

gstark wrote:...AI - Aperture Index (now basically obsolete)

I think a lot of people may disagree with you on that one, Gary!

Gary you forgot that new fangled thing VR (vibration reduction)

thank you all for taking the trouble to reply