There is no magical size/weight advantage

Started Mar 5, 2014 | Discussions thread
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Re: There is no magical size/weight advantage
In reply to SHood, Mar 8, 2014

SHood wrote:

IVN wrote:

What you can't expect is for the rumored Nikon 1 70-300mm to somehow be radically smaller and lighter without compromising image quality than the already available version for FX. Since the patent states that there are more ED (6) and fluorite elements (3) than in any other 70-300 lens (which equals to more ambitious design and greater IQ), chances are the N1 70-300 will be even larger than the FX version.

The Nikon 1 70-300mm has 20 lens elements vs 17 lens elements from the FX version. But the main determinant for size and weight is the larger elements at the front. The Fluorite lens elements are usually used at the front of the lens where they will have the biggest impact on IQ and weight savings. So while the diameter will be similar between these 2 lenses the Nikon 1 lens may still end up being lighter due to the use of large Fluorite lens elements.

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This is correct, but going by the weak performance most FX 70-300s have at 300m on larger sensors/pixels, I'm guessing that Nikon will "over design" the CX 70-300 in order to make it a good performer in combination with small sensors/small pixels. I think that the ED and fluorite elements will be used to boost IQ rather than save weight.

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