If shooting at f/22, is a fast 1.8 lens still considered fast?

Started Apr 17, 2011 | Discussions thread
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edwardaneal Veteran Member • Posts: 9,101
so here is nikons final answer

As you know from my post above I followed up my first question to nikon with a very simple and staight forward second question as follows:

"so are you saying that a Nikon DSLR like the D300 can in fact focus more accurately in low light with a f/1.4 lens or an f/2.8 lens than it might be able to under the same conditions with an f/5.6 lens

Thanks again"

And this is his answer

"Discussion Thread
Response Via Email (David D.) 04/27/2011 10:45 PM


Sure, a fast lens lets more light in to the AF system which allows it to work more effectively and thus acquire and lock focus faster. Thanks


Thanks for using Nikon products!
Nikon Inc. (USA) Support / Service
http://support.nikontech.com "

so Nikon has now flat out stated that f/1.4 and f/2.8 lenses " let in more light into the af system which allows it to work more effectively and thus acquire and lock focus faster "

Personally I think this pretty much settles our debate

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My kit - D200, 10.5mm f/2.8D, 35mm f/1.8G, 50mm f/1.4G & 70-300VR
SB800, SB600 and other misc lighting equipment

Lenses worth mentioning owned and sold– 12-24 f/4, 17-55 f/2.8, 35-70 f/2.8, 80-200 f/2.8, 20mm f/2.8, 35mm f/2, 50mm f/1.8, 50mm f/1.4D, 60mm f/2.8D, 85mm f/1.8, 105mm f/2D-DC, 180mm f/2.8, 300mm f/4D-ED

 edwardaneal's gear list:edwardaneal's gear list
Sony Alpha NEX-7 Sigma 60mm F2.8 DN Art Carl Zeiss Touit 1.8/32
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