What Nikon FAST PRIMES would YOU like to see?

Started Aug 10, 2017 | Discussions thread
chambeshi Regular Member • Posts: 463
Re: A 400mm f/4 PF already exists

Marianne Oelund wrote:

Vince P wrote:

Marianne Oelund wrote:

It weighs 2100 grams and costs almost $7k: https://www.bhphotovideo.com/c/product/1081814-REG/canon_8404b002_ef_400mm_f_4_do.html

Buy to be fair I don't think that is a fluorine lens. The Nikon 300F4 is just over half the weight and much more compact than the non F version.

The 300 f/4 PF doesn't have any fluorite elements. "Fluorine" refers to the front- and rear-surface element coatings, applied to resist dirt and contaminants, which has nothing to do with the optical construction.

The Canon 400 f/4 and the Nikon 300 f/4 PF both employ diffractive optics.

By scaling, one should expect a 400 f/4 to be 2x to 2.5x as heavy as a 300 f/4 of similar design and materials. If Nikon produced a 400 f/4 PF I would expect it to weigh in around 1500-1800g, which is just a little lighter than Canon's. A 400 f/5.6 PF would be much more comparable to the 300 f/4 PF in weight.

The venerable 400 f5.6 AIS EDIF Nikkor weighed 1200g. Mg alloy body with PF and even better a fluorite element would clinch the upgrade of a niche that's been empty for too long

A 400 f4E PF FL with AP focusing will be a most handy telephoto on the D500 and D850

 chambeshi's gear list:chambeshi's gear list
Nikon Df Nikon D500 Nikon D850 Nikon AF Nikkor 85mm f/1.4D Nikon AF Nikkor 135mm f/2D DC +15 more
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