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Old Aug 29, 2006, 3:14 AM   #1
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The Nikon 18-70mm f/3.5-4.5G ED-IF AF-S DX is the lens that comes with the Nikon D70s. So I think you all should know it well.

Most importantly, is the mount of that lens made of metal or plastic? What are Nikon ED glass elements about? How do they differ from aspherical lens elements?

I was wondering why must this 18-70 lens have three ED glass elements and one aspherical glass element.

The new Nikon 18-135mm f/3.5-5.6G IF-ED AF-S DX lens only have one ED glass element and 2 aspherical glasselements. I also heard that it comes with a plastic mount, is it true?

The 18-70mm is also a heavier lens and it has the window distance scale as well unlike the new 18-135mm.

Regards.

EDIT:

The 7 diaphragm blades of the new 18-135mm is stated to be rounded.

Any idea if the 18-70mm has the rounded diaphragm blades as well?

Thanks.



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Old Sep 26, 2006, 8:18 PM   #2
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BenjaminXYZ wrote
Quote:
Most importantly, is the mount of that lens made of metal or plastic? What are Nikon ED glass elements about? How do they differ from aspherical lens elements?

The mount is metal. ED is a type of glass, aspherical refers to the shape.
http://www.nikon.ca/products/afs-dx-zoom-18-70/


I was wondering why must this 18-70 lens have three ED glass elements and one aspherical glass element.

That's how it was designed.


The new Nikon 18-135mm f/3.5-5.6G IF-ED AF-S DX lens only have one ED glass element and 2 aspherical glasselements. I also heard that it comes with a plastic mount, is it true?

Don't have one so can't tell.

The 18-70mm is also a heavier lens and it has the window distance scale as well unlike the new 18-135mm.

Regards.

EDIT:

The 7 diaphragm blades of the new 18-135mm is stated to be rounded.

Any idea if the 18-70mm has the rounded diaphragm blades as well?

The Nikon Canada site states rounded blades for the 18-70mm.

Thanks.


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Old Sep 29, 2006, 8:50 AM   #3
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The 18-135 does have a plastic mount. Not a bad lens, but I liked the 18-70 better. Sold both, but sometimes wish I had the 18-70 again.
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