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Feel the intensity, not your equipment. Maximum image quality. Minimum weight. The new ZEISS SFL, up to 30% less weight than comparable competitors.

What is the difference ? (1 Viewer)


Well-known member
I am usually confused at the difference in prices of what seems to be the same lens. I know vr is vibration reduction, and I know pf is the new 500 prime..
I know ED is the glass ( I think) F is the stop rating, but the D and SWM confuse me and I cannot find it on the net.
But what is the D in "f4 D"

Nikon AF-S Nikkor 500mm F4 D ED SWM AF vs NIKON AF-S NIKKOR 500MM F5.6 PF ED VR LENS



Well-known member
This site covers all the various letter abbreviations used on Nikon lenses.


To answer your specific query:

D – These lenses send distance related information (subject to lens) to the camera.

SWM – Silent Wave Motor. This motor is found in the AF-I and AF-S lenses. This allows the lens focus mechanism to operate at high-speeds while being ultra-quiet.



Well-known member
Presumably because it's older technology. Also, I think that the new lightweight lenses incorporating a phase fresnel (which is where the PF comes from) element are more expensive to make. For example, the 300 f4 PF is much more expensive than the older non-PF 300 f4.

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