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<blockquote data-quote="§am" data-source="post: 117536" data-attributes="member: 9187">My understanding of the sensor and cropping is;It's a DX sensor (APS-C) so will have the standard 1.5 crop applied to it anyway.&nbsp; (A 200mm lens in 35mm equivalent will still be 300mm).What the new 1.3x crop does is take the available view, crop it by 1.3x (thereby in effect creating a banding around the current frame), at the same time as reducing the MP available and letting you shoot using all 51 focus points at a higher fps.&nbsp; And because your original 51 points now touch the edges of your frame (as opposed to centred) they can focus faster thus allowing better 'sports' type shots.And at the same time, your 200mm now is effectively a 260mm.(Or another explanation that just came to mind is.. when you enable the 1.3x crop mode, pretend your D7100 is FX camera and you've just stuck a DX lens on it.. it will act in the same way (more or less)).</blockquote>

[QUOTE="§am, post: 117536, member: 9187"] My understanding of the sensor and cropping is; It's a DX sensor (APS-C) so will have the standard 1.5 crop applied to it anyway. (A 200mm lens in 35mm equivalent will still be 300mm). What the new 1.3x crop does is take the available view, crop it by 1.3x (thereby in effect creating a banding around the current frame), at the same time as reducing the MP available and letting you shoot using all 51 focus points at a higher fps. And because your original 51 points now touch the edges of your frame (as opposed to centred) they can focus faster thus allowing better 'sports' type shots. And at the same time, your 200mm now is effectively a 260mm. (Or another explanation that just came to mind is.. when you enable the 1.3x crop mode, pretend your D7100 is FX camera and you've just stuck a DX lens on it.. it will act in the same way (more or less)). [/QUOTE]

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