silvercreek
Senior Member
Will someone please explain what the IF ED G part of this lens description is please?
Nikon Nikkor 70-300mm AF-S F/4.5-5.6 VR IF ED G Lens
Nikon Nikkor 70-300mm AF-S F/4.5-5.6 VR IF ED G Lens
Please explain part of the description on this lens
- Thread starter silvercreek
- Start date
Carolina Photo Guy
Senior Member
AF-S = Auto Focus with Silent Wave Motor
G = Later model Distance Information or Newer than D designation
VR = Vibration Reduction
IF = Internal Focusing
ED = Extra Low Dispersion
PO = Post Office or Pissed Off (Your Choice)
and my FAVORITE
KFC = Kentucky Fried Chicken
:encouragement:
Hope this helps.
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IF = Internal Focusing
This allows the internal elements to move slightly to shorten the lens' actual focal length as you focus closer
ED = Extra-low Dispersion Glass
ED glass helps eliminate secondary chromatic aberration (green-magenta colour firnges)
G = Gelded
No aperture ring so no way you can set the aperture on a manual focus camera
For fuller explanations of all markings have a look here:
Camera Lenses Explained | NIKKOR Lens Technology for Nikon Camera
This allows the internal elements to move slightly to shorten the lens' actual focal length as you focus closer
ED = Extra-low Dispersion Glass
ED glass helps eliminate secondary chromatic aberration (green-magenta colour firnges)
G = Gelded
No aperture ring so no way you can set the aperture on a manual focus camera
For fuller explanations of all markings have a look here:
Camera Lenses Explained | NIKKOR Lens Technology for Nikon Camera
Carolina Photo Guy
Senior Member
silvercreek
Senior Member
Thanks guys. I knew someone would come through. I am looking at a 6 month old lens that has only 1000 clicks on it for $325. Is there a serial number that someone can tell the actual age of a lens?
AC016
Senior Member
Just count the "rings" on the lens and you will get the age, lol 
No, seriously, here is a good site:
Nikon Lens Serial Nos
No, seriously, here is a good site:Nikon Lens Serial Nos
I'm not sure how a lens would have "clicks". Lenses do not actually take photos, they just channel the light. What lens are we talking about?
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Just count the "rings" on the lens and you will get the age, lol
Nikon Lens Serial Nos
Wow...I had no idea such a database like this existed. Very cool, thanks!
silvercreek
Senior Member
Just count the "rings" on the lens and you will get the age, lol
Nikon Lens Serial Nos
So that I know I'm reading the information correctly, would a Nikon Nikkor 70-300mm AF-S F/4.5-5.6 VR IF ED G lens with serial no. 2109502 be made August 2006 in Thailand?
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AC016
Senior Member
I beleive August 2006 is when it first started to be made. I think you may have to call Nikon to get the exact date of your lens.
Just-Clayton
Senior Member
I looked up a 50mm lens that was given to me and it turned 50yrs this year. It still works great.
Lens glass changes with age. It aquires a patina if you will. This is how they discovered lens coatings. In the old days when a lens "varnished" over people threw them away and got a new lens. At some point someone discovered "varnished" over lenses were actually sharper than plain brand new ones and they helped with all sorts of other optical problems and thus was born the idea of lens coatings.
That 50 year old lens you have likely performs better now then when it was new!
That 50 year old lens you have likely performs better now then when it was new!
Interesting to hear this. Please don't get me wrong and I mean no offense by this whatsoever but is this really true? I know glass can slowly "melt" over time and develop those wavy lines due to the fact it's an amorphous material and continues to settle with time but I've never heard of it developing a coating. Did you read this somewhere or ?
Carolina Photo Guy
Senior Member
Of course it's true!!!
We would NEVER say anything that was not 100% true around here!!
I got this bridge for sale up in New York if you're interested. You can make a LOT of money with it!
Except....Glass, even though it feels solid, is actually still in it's liquid form. So, the longer your glass sits the more small distortions it will take on, although we are talking about 100's of years here. Glass measured in the 400+ year old cathedrals of Europe has been found to be actually running down, meaning it is much thicker now at the bottom of the window than at the top, and displays a lot of distortions throughout. Now, before you all freak out on your old lenses, i am sure we have much better glass technology now than they did when they built those cathedrals.
Ok, i stand corrected - and this is from the Math.ucr.edu website - "Some people claim that glass is actually a supercooled liquid because there is no first order phase transition as it cools, which is true. In fact, there is a second order transition between the supercooled liquid state and the glass state, so a distinction can still be drawn."
Ok, i stand corrected - and this is from the Math.ucr.edu website - "Some people claim that glass is actually a supercooled liquid because there is no first order phase transition as it cools, which is true. In fact, there is a second order transition between the supercooled liquid state and the glass state, so a distinction can still be drawn."
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Yeah, that's what I was hinting at with the amorphous comment. That's a pretty coo aspect of glass. Just look at those old mirrors or glass in frames, it takes on this very cool wavy appearance that only old glass gets.
I was just reading up on it, since I learned that 20 years ago, and it seems that maybe that isn't actually the case... now im going to have to dig deeper, because it's the internet, and you can't believe everything you read.
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