New APC 50 Stabilised (1 Viewer)

[iseegeorgesstar]

IF I was in the market for this, I'd only ever get one which does't use proprietary batteries. (And it is high time companies learned to make things which run on standard rechargeables.)

The various charging port options on electronic devices give me a headache alone.

 

[Ignatius]

The various charging port options on electronic devices give me a headache alone.

As far as that goes, we in the EU are sort of lucky: from 2024, USB-C is going to be the mandatory standard for charging cords as far as the physical format goes. Data transfer rates have not been standardized.

 

[John A Roberts]

The Kite site contains various diagrams that give an idea of the optical construction and operation,
see at: Kite Optics • Nature & Hunting | Binoculars telescopes riflescopes


a) The objective lenses (each presumedly a cemented doublet) are behind a cover plate,
and focusing is by moving the lenses along their optical axes;

b) The Schmidt-Pechan prisms are contained in the image stabilisation module, and;

c) The eyepieces swivel for IPD adjustment, which requires the addition of a rhomboid prism for each;
and each eyepiece seems to be at least 3 lenses in 3 groups.







As explained by Kite, the particulars of the IS design - using a gimbal based mechanism, instead of gyroscopes -
allows the use of S-P prisms (verses the use of Porro prisms in other systems), see at: Innovator in stabilization - Kite Optics

Though interestingly the Fujinon x28 Techno-Stabi IS models also use roof prisms, see post #62 at: Alpha IS?


- - - -
As Fazal notes in post #15, the binoculars are actually manufactured by Kamakura.
Their site in English is at: 鎌倉光機株式会社 | Creating de facto standards for the future

As an OEM (original equipment manufacturer), Kamakura doesn’t publicly go into detail about specific products.
However, under Company/ History, it lists:
• 2014 Started development of anti-vibration technology (image stabilization) and patented as "Image Stabilization Device".
• 2015 Launched monocular with anti-vibration mechanism.
• 2017 Began sales of anti-vibration binoculars.

And a search of Google Patents shows several related US patents for the period that are assigned to Kamakura Koki Co, Ltd.


Besides Kite (Belgium), the various IS binoculars made by Kamakura have also been marketed by
Bresser (Germany), Opticron (UK) and SIG Sauer (USA).


John

 

[Mark9473]

I don't understand how the fov of the higher magnification IS Kites is always better than the equivalent models with lower mags...

Look at the schematics that John posted. The rhomboid prism just in front of the eyepiece has limited size, which reduces the effective field stop size (hence FOV) of the eyepiece.

 

[Joo]

KITE OPTICS APC 18X50 ED Stabilized Binoculars Review: The new benchmark!​

Recensione del binocolo stabilizzato KITE OPTICS APC 18X50 ED: Il nuovo punto di riferimento! -

Offre un rapporto qualità-prezzo eccellente, con ottiche di alta qualità e il suo sistema di stabilizzazione gestisce perfettamente i 18 ingrandimenti

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