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Lens for youth baseball to go with D7000
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<blockquote data-quote="stmv" data-source="post: 70566" data-attributes="member: 10038"><p>no,, the crop factor is the same whether a DX or FX lens. The DX lens means that it has a smaller circle and only covers a DX sensor, so if you use a DX lens on a FX body, then you would have a circle projected onto the FX sensor which is why when a FX camera detects a DX lens, it will automatically crop down the sensor to the DX size.</p><p></p><p>But both the FX and DX lens on a DX camera will fully cover the area of the sensor and both use a multipication factor of approx 1.4-1.5 depending on the camera. So, for example if you buy a sigma 10-20, that is the same as a 15-30 range. </p><p></p><p>Hence if you have the 55-300 DX VRII lens, that has a reach of a 450 mm on the D5100/7000 or any DX camera.</p><p></p><p>That is one reason there is a hard core DX following that don't want to give up that extra reach (think bird photographers). </p><p></p><p>The 18-200 is a really nice zoom, because it gave you effectively a 27-300 mm zoom in one package. Somewhat wide to fairly long tele.</p></blockquote><p></p>
[QUOTE="stmv, post: 70566, member: 10038"] no,, the crop factor is the same whether a DX or FX lens. The DX lens means that it has a smaller circle and only covers a DX sensor, so if you use a DX lens on a FX body, then you would have a circle projected onto the FX sensor which is why when a FX camera detects a DX lens, it will automatically crop down the sensor to the DX size. But both the FX and DX lens on a DX camera will fully cover the area of the sensor and both use a multipication factor of approx 1.4-1.5 depending on the camera. So, for example if you buy a sigma 10-20, that is the same as a 15-30 range. Hence if you have the 55-300 DX VRII lens, that has a reach of a 450 mm on the D5100/7000 or any DX camera. That is one reason there is a hard core DX following that don't want to give up that extra reach (think bird photographers). The 18-200 is a really nice zoom, because it gave you effectively a 27-300 mm zoom in one package. Somewhat wide to fairly long tele. [/QUOTE]
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Lens for youth baseball to go with D7000
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