NIKKOR Z 24-70mm f/2.8 S

[kiavash]

به نظر میرسد لنزهای سریsنیکون مربوط به دوربینهای بدون اینه وبه خصوص درگوشه ها پیشرفت زیادی کرده اند.
https://www.the-digital-picture.com/...mp=0&APIComp=0


https://www.dpreview.com/products/ni..._z_24-70_2p8_s
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Principal specifications
Lens type	Zoom lens
Max Format size	35mm FF
Focal length	24–70 mm
Image stabilization	No
Lens mount	Nikon Z
Aperture
Maximum aperture	F2.8
Minimum aperture	F22
Aperture ring	No
Number of diaphragm blades	9
Optics
Elements	17
Groups	15
Special elements / coatings	Four ED and two aspherical elements + Arneo and Nano Crystal coatings
Focus
Minimum focus	0.38 m (14.96″)
Autofocus	Yes
Motor type	Stepper motor
Full time manual	Yes
Focus method	Internal
Distance scale	No
DoF scale	No
Physical
Weight	805 g (1.77 lb)
Diameter	89 mm (3.5″)
Length	126 mm (4.96″)
Sealing	Yes
Zoom method	Rotary (extending)
Power zoom	No
Filter thread	82 mm
Hood supplied	Yes
Other

[kiavash]

Finally, the Nikon Z 24-70mm f/2.8 S Lens Teardown

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انبوهی ازجزییات وطراحی بی نظیر.
لنزرنتال میگویدهمانند لنزهای کنونRF لنزهای Zنیکون نیزازطراحی متفاوت وجدیدی نسبت به لنزهای پیشین بهره برده اند.مهندسی از بسیاری جهات باورنکردنی است:

نتیجه گیری انها:

؛As you can probably tell from our struggles doing this disassembly, the Nikon Z lenses are very different than their legacy lenses. They’re also different than what we’ve seen from other manufacturers. That suggests Nikon Z lenses, like Canon R lenses, are a completely new optomechanical design, probably done entirely in-house.
The engineering itself is incredible in most ways. The neatly laid out and solidly adhered flexes reflect the careful design. The taping of every possible point that Loctite or anything else could get in the lens does, too. The design is logical and clean; the difficulties in the tear-down were ours. Now that we know our way around, disassembly won’t be bad at all.
I will complain about the fact that filter-ring or hood-slot damage means an expensive repair. That was not well thought out; those are common repairs, and they’re going to be pricey on this lens. But the lens is well-engineered, and I see no other weak points to make me think it will be anything less than reliable.

[kiavash]

مقایسه ی سریG با نسل جدید سری S یا مانتZ که نشان از پیشرفت خوب نسل جدید میده. گرچه حتی 24-70 VRتنها حدود یکی دوسال از معرفیش میگذره
https://www.the-digital-picture.com/...mp=0&APIComp=0

[kiavash]

https://www.slrlounge.com/nikon-z-24...s-has-arrived/