AF-S NIKKOR 120-300mm f/2.8E FL ED SR VR is coming
Thern wrote:
I said in the other thread I'm going to buy this new 120-300 since it's exactly what I want to replace the 70-200E.
I'm quite sure the Nikon will be built like the 180-400 without any compromise and the best technology Nikon is able to deliver.
Combined with the D5 or new D6 this should be a superb combo for indoor shooting.
On top of this it withholds (at least some) F-mount shooters from switching brands.
So it's a smart move to release this lens before the upcoming Olympics.
SR is very intriguing might be an acronym for Strontium (SR) titanate glass (higher dispersion than diamond) or Single Ring phase-contrast, Super Resolution, Super Rare, I don't have a clue, just blabbering
Agree with your points,and Lance's that the weight of this zoom will be a big factor in its reception. The 180-400 f4E TC weights 3500g at 128mm O.D by 362.5 mm long. The TC adds an extra 8 elements (plus metal) to the 19 = 27 total. 8 of these are ED + 1 fluorite. The 200-400 f4 VR has 24)and the 300 f2.8G has 11 in total, 3 are ED. Telephoto zooms use more elements e.g 22 elements in 70-200 f2.8E FL (1 Fluorite & 6 ED); 20 elements in 80-400 G (4 are ED).
A 300 f2.8 cannot be narrower than 107.2mm, and the G ED-IF prime measures 124×267.5mm. If the 120-300 - also an IF lens thus a fixed overall length - has a similar width then a crude estimate, using a ratio off the photo = 267mm approx length.
The widest lens elements push up the weight (especially at the anterior end), so replacing these with less-dense materials is one of the key innovations to lighten net mass. And so do use of space age alloys in the chassis.
A Strontium titanate element sounds intriguing, but my $0.02c, I wager SR = Super-Refractive: perhaps their new ceramic complementing Nikon's Super Extra-Low Dispersion glass, used in the 200 f2G and 80-400 G (and perhaps other Nikkors).
Sep 05, 2019 at 04:42 AM
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