Kenko Lens2scope Adapter for Canon EF / EF-S Mount (Angled View)

BH #KELCEFA • MFR #K-LS10-CEAB
Kenko
Kenko Lens2scope Adapter for Canon EF / EF-S 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 Canon EF / EF-S Mount is a simple accessory that converts any Canon EF / EF-S 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.
In Stock
$179.00
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Kenko K-LS10-CEAB Overview

Kenko black Lens2scope Adapter for Canon EF / EF-S Mount is a simple accessory that converts any Canon EF / EF-S 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)

Kenko K-LS10-CEAB 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 Weight0.515 lb
Box Dimensions (LxWxH)6.1 x 4.4 x 3.6"

Kenko K-LS10-CEAB Reviews

Makes a spotting scope available to my companions

By Gordon
Rated 5 out of 5
Date: 2022-03-16

I bought the Kenko Lens2Scope with 45 angled viewer for my Canon EF Lenses. I found that it fitted properly and was sharp and free of colour fringing at all focal points on my lenses, with and without the Canon 1.4 and 2.0 extenders for the telephotos: 500mm F4L, 70-200mm F2.8L, 24-105 F4L, 17-40 F4L. At wide angles, the 17-40 had comical distortions. The Kenko has a 10mm focal length. The magnification of the resulting spotting scope is the lens focal length divided by 10. Thus, the 500mm F4 is a 50 x 125 spotting scope, since the 500 has a 125mm objective lens. The 70-200mm zoom is a 7-20 x 75 spotting scope, etc. The Kenko is marked "4:1". I assume it is an F ratio, which implies that the exit pupil of the Kenko is 10/4 = 2.5mm, which is as stated in Kenko's manual. I have a pair of Canon 8x30 binoculars with a 7.5 field of view. With a 70mm lens the Kenko gives 7 power, but a smaller field of view, which I calculated as being approximately 6 by viewing a fence. In comparison, a 200mm lens on my full-frame Canon 5D IV has a much wider 10 field of view. The narrow field of view does make the Kenko a bit difficult for aiming the spotting scope. The Kenko manual claims the unit has an Apparent field of view (AFoV) of 42. Astronomers (https://www.oreilly.com/library/view/astronomy-hacks/0596100604/ch04s15.html) calculate the True Field of View (TFoV) as AFoV/Magnification. Since my 70mm lens has a 7X magnification, the TFoV should be 42/7 = 6, which is consistent with my observations noted above. The Kenko shoe is plastic and a flimsy fit, in my view. I won't trust any of my lenses to it, and I'll use the Canon shoes on the telephotos. The shorter lenses will be handheld, which have a comfortable grip, given the 45 angle viewer. Overall, I'm happy with the purchase, since it makes a spotting scope available to my companions while I'm photographing birds with my other lens.

Just what I was looking for.

By John
Rated 5 out of 5
Date: 2020-07-06

Kenko Lens2scope Adapter combined with my 300mm or my 500mm mirror lens lets me have a small easy to carry around spotting scope. I have been looking for this type adapter for a long time. B & H Foto and Electronic s Corp. had the adapter in stock. I received the adapter with in a week. I am a very satisfied customer.

Does the job

By Troyce
Rated 4 out of 5
Date: 2019-10-12

It works quite well, and has turned my Sigma 15-600 Sports into an excellent spotting scope. I won't give it a full five stars because the casing and hardware seem a bit cheap to me. I'm not sure how it will hold up to long-term rough use.

Very useful

By Albert
Rated 5 out of 5
Date: 2019-02-10

As an avid astronomer I can use this device attached to a telephoto lens as a small portable telescope. Like it  If the eyepiece was a zoom type would be even better

Great! Bright and clear!

By Jeremy
Rated 5 out of 5
Date: 2018-10-17

Bought this as a gamble hoping it would work out. ITS PERFECT! Love it. Means I can bring my camera instead of a giant heavy scope on hikes with my guests as I am guiding. Fits my canon lenses perfectly. Light and unnoticeable in my camera bag. If you think you want it, buy it!

This product is just what I was looking for

By Gpat
Rated 5 out of 5
Date: 2017-07-14

The product is as expected, based on reviews by others before purchase. The transaction and shipping were excellent.

Lightweight, good clarity

By Wayne
Rated 4 out of 5
Date: 2022-02-25

This is an amazing 161gm (without 20gm tripod adapter or 38gm padded bag) eyepiece that converts longer focal length lenses into a monocular, allowing a useful option when conditions may not be optimal for photography, or just to have fun. I compared it to a quality 9x26 binocular as a reference, using a similar powered 100mm f2.8 lens on the eyepiece. The clarity through the monocular was equal or better than the binocular, and curiously, the exit pupil was noticeable bigger than the ~3mm binocular, meaning that the maximum exit pupil diameter is closer to 3.5mm than the spec'd 2.5mm (hence lenses up to f2.8). The monocular has a little bit narrower field of view than the binocular's 5.5 degrees. A 135mm f3.5 Asahi Pentax lens (M42 screw mount) with a Canon EF adapter made a small 13.5x monocular, easily light enough to use the eyepiece tripod adapter (which can be unlatched), with wonderful focus action. The old Pentax is not up to today's sharpness standards, but it still worked very well. A 70-200mm f4 lens attached gives a useful 7-20x range, but the Canon version of the lens is varifocal, so you need to refocus with every change of zoom. A spectacular 30x from a 300m f4 can easily pick out the phase of Venus. For astronomical subjects, you will have to sight along the lens tube to align it. Get your eye in the precise sweet spot, and the image is clean. Colour fringing is very minimal even with extreme subjects. The focal plane is very flat, but slightly tilted if you find a detailed enough subject that covers the whole field. I didn't find this was noticeable in normal use. The lens cap covering the rubber eyepiece is prone to slide off, and the bag has a slit in it so you can't put it in there when not in use. Using the awesome quality of camera lenses is a great way to get a quality spotting scope. The short distance to the focal plane I think is the limitation to making use of the whole image circle. ...so now we need a talented DYI'r to figure out how to activate the lens stabilization...

Poor quality and vastly overpriced

By George
Rated 1 out of 5
Date: 2020-11-03

Tried it with my excellent Canon EF 100-400. Image quality was quite poor. and BTW The adapter is extremely non-parfocal when zooming. For the price of this item I could get a comparable spotting scope.

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YOUR RECENTLY VIEWED ITEMS

question

Can the eyepiece be taken off, add a T mount adapter and then attach a Canon D70?
Asked by: Anonymous
No... Why don't you just put the camera on the lens and shoot? It would be the same image size in megapixels, I believe. ;-)
Answered by: John R.
Date published: 2018-08-28

question

Can I use this adaptor with a Canon FD lens? f not, can I use an FD to EF adaptor and then attach it to the Kenko Lens2scope?
Asked by: Joseph R.
I use this adapter successfully on EF & EFS LENSES. I do not have any FD lenses but expect another adapter would limit focus at infinity- not good for long lens!
Answered by: Pat S.
Date published: 2018-08-28
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