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JoshI wrote:
How many f1.2 AF lenses have they made? I don't think you read what I wrote. I wrote that my guess is that the f1.2 AF design they patented was too costly or too large or both to make sense for the market. I don't doubt they can make one. I doubt they can make it affordable.
While I'm not a Nikon engineer, I know that to chip a 58mm f1.2 NOCT you have to grind away a portion of the rear element. Doesn't leave much room for the pins needed for an AF lens. I could be wrong,
I doubt they want to make one and offer it for less then $1700. They offer a 58 f1,4 for $1700 and already have folks lining up to buy one. What again did the 50 f1,4 cost? Compare that to an 85 f1,4. You could buy both the 50 and the 85 and pay whatīs left of the $1700 this 58mm costs towards a Sigma 35 f1,4. Then again, I might be an idiot and obviously donīt see where the 58mm is better then having 3 top of the line f1,4 lenses.
As to the grinding and space requirements bit, just take a look at how Canon deals with this:
http://www.juzaphoto.com/shared_files/articles/canon_50_f1/canon_50_f1_c.jpg
I doubt Nikon is unable to do the same, even if their connections are retractable and round. Space requirements will be the same or less then for the Canon connections.
They already ground a bit off of the rear element on the 55 f1,2 S. The technology is there. The manual focus lens proved that it fits in an F-mount regardless of what people wish to believe.
PS: the aftermarket dandelion chip mount is large enough to fit all the contacts for AF as well. If the chip fits, so will the AF contacts.
So plain and simple, Nikon could build a 58mm f1,2 lens if they wanted to. What they would charge for it will remain a mystery. They seem content releasing yet another f1,4 lens and as long as it sells, why wouldnīt they? The practical use for an f1,2 lens is nonexistent in todays world. As I mentioned before, if you want narrow DoF, pick up a longer lens. Modern camera ISO speeds made the need for an f1,2 lens obsolete.
In regards to how technically feasible such a lens is, I start to believe the AF isnīt accurate enough for f1,2 "normal" primes. OtoH, it works fine for a 400mm f2,8... Who knows?
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