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DX vs FX lenses - information and Misinformation.

ScottChapin

Powder Springs/ATL, US
9064 posts

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"RE: DX vs FX lenses - information and Misinformation."

ScottChapin Moderator Awarded for his high level skills in various areas, including Aviation and Birds Photography Charter Member
Sat 24-Dec-11 06:03 PM


>Think of the DX nomenclature on a "DX" lens simply
>being there to designate what format camera it should be used
>with and that is all.

Exactly my point.

>
>With regards to your comments regarding the SB900, this has
>absolutely nothing to do with whether a given lens is DX or
>not. It has EVERYTHING to do with format of the camera body.
>The flash picks up the focal length a lens is being shot at
>and make necessary adjustments whether that "50mm"
>is on a DX body or on a FX body. This does affect things.

Again, exactly my point. At any given focal length, the lens projects a narrower field of view on an DX body and the flash can zoom in.

The OP said that a 50mm DX lens on a DX body has the same FOV as a 50mm FX lens on an FX body. That isn't so. That was my point.

A 50mm DX lens might be smaller, lighter, and less expensive, because it does not have to have the same image area. It does not produce the same FOV on a DX sensor as a 50mm FX lens does on an FX sensor though.

Scott Chapin
Powder Springs, GA, USA

Nikonians Team Member

This is a hot, active topic! DX vs FX lenses - information and Misinformation. [View all] , davidd1833 Silver Member , Fri 23-Dec-11 01:05 AM
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