Kenko Lens2scope Adapter for Nikon F Mount (Angled View)

BH #KELNFA • MFR #K-LS10-NFAB
Kenko
Kenko Lens2scope Adapter for Nikon F Mount (Angled View)
Key Features
  • Angled View
  • Focus Using Lens
  • 5-Element/3-Group Lens Configuration
  • Fold Down Rubber Eyecup
Kenko black Lens2scope Adapter for Nikon F Mount is a simple accessory that converts any Nikon F Mount lens into a spotting scope. Its lightweight body houses a compact roof prism, lenses, and an eyepiece just like a traditional spotting scope and with the lens is attached, the whole system acts as a spotting scope. This model features an angled eyepiece that is set at a 45° angle for more comfortable viewing while sitting, standing or laying.
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$159.00

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Kenko K-LS10-NFAB Overview

Kenko black Lens2scope Adapter for Nikon F Mount is a simple accessory that converts any Nikon F Mount lens into a spotting scope. Its lightweight body houses a compact roof prism, lenses, and an eyepiece just like a traditional spotting scope and with the lens is attached, the whole system acts as a spotting scope. This model features an angled eyepiece that is set at a 45° angle for more comfortable viewing while sitting, standing or laying.

The optics in the Lens2scope Adapter magnifies the image by a factor of 10x so that a 100mm lens would have the same magnification as a 1,000mm lens when viewing. Focus is easily achieved by using the lens' manual focus ring. It has a removable tripod adapter for more comfortable viewing over extended periods of time, and supports up to 28.2 oz. A small case is included to safely store and transport the adapter.

Optical Performance

  • 10mm focal length
  • Roof prism optical path
  • 5-element / 3-group lens configuration
  • Spotting scope magnification ratio: 1/10X the focal length of the lens mounted
  • Loupe magnification ratio: 25X when the lens mounted has 1:1 macro capability
  • 42° apparent field of view
  • Maximum exit pupil: 2.5mm
  • 20mm long eye relief

Use and Handling

  • Angled viewing: Eyepiece is set at a 45° angle for more comfortable viewing whether sitting, standing or laying
  • Focus using camera lens
  • Fold-down rubber eyecup
  • Removable tripod adapter with 1/4"-20 mount, supports up to 28.2oz (800g)
UPC: 059497022385

Kenko K-LS10-NFAB Specs

Prism SystemRoof prism
Focal Length10 mm
Apparent Field of View42°
Eye Relief20 mm
Dimensions7.1 x 4.3 x 3.1" / 18.0 x 11.0 x 8.0 cm
Weight6.5 oz / 185.0 g
Packaging Info
Package Weight0.635 lb
Box Dimensions (LxWxH)6.1 x 4.35 x 3.5"

Kenko K-LS10-NFAB Reviews

Cheap and dark, but possibly handy in some scenarios

By Andrew
Rated 3 out of 5
Date: 2020-09-24

First of all, this will work with any Nikkor AF-S lens, including D, G and E (electronic diaphragm) types. I don't know for sure, but I am afraid focusing won't work on AF-P lenses (with their entirely electronically controlled AF system). Do not expect a bright view, particularly with slow (small max aperture) lenses. (Maybe an f/2.8 tele would work.) And don't expect comfortable, easy viewing. A half-decent set of binoculars (like Nikon's ProStaff 3S, which is cheaper and more versatile) is going to be a better bet than this with even a relatively fast lens. Heck, even your camera's optical viewfinder might be better. The build quality is not great. Hard to believe this is the same company that makes Tokina and Hoya products. It's plasticky and here's lots of give in the mounting. I think if you have an old fast tele lying around that you don't use much, you could convert it cheaply to a permanent half decent telescope or spotting scope. It could also make a half-decent loupe if you have a close-focusing lens handy, though I find it cumbersome. Otherwise, you're maybe better off just looking through your camera's viewfinder - or just getting a decent pair of binoculars.

Works, but but not great

By Sergei
Rated 3 out of 5
Date: 2018-12-29

I used it with a Nikkor 200-500 mm f/5.6 lens. It works ok in bright light. As the exit pupil is only 2.5mm, a faster lens would be much better, as suggested by others. A smooth ball head on a sturdy tripod is a must at this magnification. When following the moon, a tracking devise would be advised or moon will move out of frame faster than desired.

TRIPOD RECOMMENDED

By Neil
Rated 4 out of 5
Date: 2018-07-19

HAND HELD RECOMMENDED FOR UNDER 85MM. TRIPOD FOR ABOVE. HAVE HAVE STRAIGHT MOUNT. EASIER TO HAND HOLD ANGLED MOUNT STEADILY. STRAIGHT MOUNT EASIER TO SIGHT QUICKLY.

It actually Works

By Michael
Rated 5 out of 5
Date: 2018-05-22

I was impressed. It works very well. I tested it on my Nikon 200-500 and was very impressed.

Bright and good resolution

By Hiro
Rated 5 out of 5
Date: 2018-04-26

I bought this because I want to use a 200-500mm Nikkor lens as an astronomical telescope. There is a Japanese company Kenko's name, but Lens2scope is not sold in Japan. I do not know why. It can be bought from importers, but it is more than double the price than B&H. I am happy that B&H sent me to Japan safely and cheaply. I saw Jupiter, Saturn. Lens2scope is bright and satisfied with resolution well.

Turn Your Long Lenses into a Telescope

By Jeffrey
Rated 5 out of 5
Date: 2017-03-02

This crazy accessory works surprisingly well. Attach a 200mm, 300mm or 500mm lens to this thing, and you wind up with a very powerful telescope. This device is for viewing only. Sure, a dedicated quality telescope would offer a brighter, wider field viewing experience, but for the price, this Lens2Scope adapter does an amazingly good job.

works great

By Jose
Rated 5 out of 5
Date: 2020-08-17

I got this to use my 200-500mm f/5.6 lens as a small telescope. It works as a 10mm objective, so I get a 50x magnification (500mm/10mm) with the lens set to 500mm, which is not a lot of magnification for a telescope, but enough to see Jupiter's moons as well as Saturn's rings. The result image is very clear and bright (at least with my f/5.6 lens). I only wish this setup allowed me to swap objectives in order to get even higher magnification.

Its all about your expectations

By John
Rated 5 out of 5
Date: 2019-01-03

I read a lot of reviews about this item before I ordered one. Some love it, some are not so enamored.  Personally I like it but I need to explain its because of my expectations and use. I had my first such device like this many years ago for my Canon. Some camera makers (like Nikon and others) use to produce these for their own lenses.  I missed buying the Nikon unit like this back years ago as they are no longer produced. If you do want a Nikon one you search the used market and will usually have to pay a big price for one that is likely deteriorated with fungus or dirt. I chose to go with this one. I know what these will, and will not do. They are not magic and cant make a bad lens into a good scope. However, they can make a usable scope from a decent lens. Years ago I got Sigma 600mm  mirror lens for a Nikon. They were the fad for a time but never lived up to what a good quality modern lens can do. I put this Lens2scope on it and made it into a fun little telescope. Its not great but it is good. The lens is an f8 so its not super bright. It works good on a sunny day and it works great for looking at the moon and stars. I have also tried it on some other good lenses and it makes a fair scope.  It works great on my Nikon 200-500 as well as my Tamron 150-600 as well as other lenses I have. Its not for everyone but if you understand its limitations it can be fun with the right lenses. It turned my nearly useless 600mm Sigma mirror lens into a very workable scope that I can use and enjoy. I have read of people picking up older 200mm or larger manual focus lenses cheap on ebay and making them into very serviceable spotting scopes. I am enjoying mine but again, I have used these before and know their limitations. But they can work OK if you understand what they are and how they work best. Yes, I would buy one again!

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YOUR RECENTLY VIEWED ITEMS

I assume this will work fine for I assume this ...

I assume this will work fine for I assume this can be used, with good effect, as a spotting scope at a shooting range to see where I hit while aiming. Any thoughts?
Asked by: Harvey
This product will work with a Nikon F mount lens. I use one myself with a 70-200mm
Answered by: John
Date published: 2020-11-03

question

Is the image correct both vertically and horizontally? I am concerned that the image might appear flipped left-to-right.
Asked by: Anonymous
The image does not change. It is correct both vertically and horizontally.
Answered by: Glenn N. Slik Expert
Date published: 2018-08-28

question

Overview states it turns a 100mm lens into a 1000mm spotting scope. Shouldn't it turn a 100mm lens into a 10mm spotting scope?
Asked by: William D.
You need to divide the focal length of the lens by the focal length of the eye piece.100mm lens divided by 10mm eye piece = 10 mm spotting scope.600mm lens divided by 10 = 60 mm If yo add a 2X converter to the lens it would double the spotting scope magnification
Answered by: John K.
Date published: 2018-08-28
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