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<blockquote data-quote="Horoscope Fish" data-source="post: 287392" data-attributes="member: 13090">No, it does not.I'm not always good at explaining this stuff but here goes.It's not the lens that determines the crop factor you're concerned about. The crop factor comes into play because the sensor in a DX camera is smaller than that of an FX camera. So, to repeat: It's the SENSOR that makes the difference. What the lenses do remains unchanged but some are designed to work with certain sensors. Even so, we can use this to our advantage.To wit: An FX lens can be used on a DX body because the lens is designed for the larger FX sensor; it projects a &quot;big&quot; image. Putting this gig image on a small sensor is no problem because the image covers the entire sensor. But, if you reverse this, and use a DX lens on an FX sensor you've put a lens designed for the smaller sensor on a camera with the larger sensor. See the problem? The smaller image projected by the DX lens was NOT designed to cover the larger FX sensor and the defecation rapidly impacts the rotary oscillator.Big image (FX lens) on a small sensor (DX body) = Joy!&nbsp; Small Image (DX lens) on a big sensor (FX body) = No joy!Hopefully that helps clarify....</blockquote>

[QUOTE="Horoscope Fish, post: 287392, member: 13090"] No, it does not. I'm not always good at explaining this stuff but here goes. It's not the lens that determines the crop factor you're concerned about. The crop factor comes into play because the sensor in a DX camera is smaller than that of an FX camera. So, to repeat: It's the SENSOR that makes the difference. What the lenses do remains unchanged but some are designed to work with certain sensors. Even so, we can use this to our advantage. To wit: An FX lens can be used on a DX body because the lens is designed for the larger FX sensor; it projects a "big" image. Putting this gig image on a small sensor is no problem because the image covers the entire sensor. But, if you reverse this, and use a DX lens on an FX sensor you've put a lens designed for the smaller sensor on a camera with the larger sensor. See the problem? The smaller image projected by the DX lens was NOT designed to cover the larger FX sensor and the defecation rapidly impacts the rotary oscillator. Big image (FX lens) on a small sensor (DX body) = Joy! Small Image (DX lens) on a big sensor (FX body) = No joy! Hopefully that helps clarify. [COLOR=#ffffff]...[/COLOR] [/QUOTE]

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