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<blockquote data-quote="crycocyon" data-source="post: 136121" data-attributes="member: 13076"><p>Isolating a subject against a background has always been a pursuit in fine photography. There are times when greater depth of field is required, and times when it is not. Having one or two more stops to play with can make a huge difference in low light between having camera shake and not having it, even at high ISOs. There is also a need for shallow depth of field and natural light image capture in DSLR video so those lenses are not just made for still photography. For the lens to be sharp and fast at the same time you need the ED or aspherical elements, nanocoating, etc.. and just by virtue of the design, fast primes consistently outperform zooms in terms of resolution. Plus, a faster lens will be sharper stopped down from 1.4 to 2.8 than a 2.8 lens shooting wide open. It is the case I believe that a kit lens will not outresolve a D800 sensor, but a fast prime would.</p></blockquote><p></p>

[QUOTE="crycocyon, post: 136121, member: 13076"] Isolating a subject against a background has always been a pursuit in fine photography. There are times when greater depth of field is required, and times when it is not. Having one or two more stops to play with can make a huge difference in low light between having camera shake and not having it, even at high ISOs. There is also a need for shallow depth of field and natural light image capture in DSLR video so those lenses are not just made for still photography. For the lens to be sharp and fast at the same time you need the ED or aspherical elements, nanocoating, etc.. and just by virtue of the design, fast primes consistently outperform zooms in terms of resolution. Plus, a faster lens will be sharper stopped down from 1.4 to 2.8 than a 2.8 lens shooting wide open. It is the case I believe that a kit lens will not outresolve a D800 sensor, but a fast prime would. [/QUOTE]

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