Kenko Mirror Lens 400mm F8.0

Extremely light and compact Kenko Mirror Lens 400mm F8 super telephoto lens for out door photographers.

Kenko Mirror Lens 400mm F8.0

The Kenko MIL TOL Mirror 400mm F8 super tele lens is extremely compact and lightweight.
Useful for those who prefer shooting active scenes and have some sub super telephoto lens along with primer lenses.
When shooting birds, animals, heavenly objects, flora, Kenko MIL TOL Mirror lens 400mm F8 is ideal option.

Kenko Mirror Lens 400mm F8.0

Compact and lightweight
With focal length 400mm lens weight is only 340g (without T-mount). Lens size is 74x82mm. Lens can be easily stored in someone’s pocket or small bag. That allows to keep this lens always at your side and save room for other accessories.
Lens has fixed aperture F8 that is specific feature, so it is recommended to use tripod to prevent shaking.Collage.jpgImage quality
Comparing with equal lenses of other brands, thanks to lens multi-coating the image is clear and of high resolution. Due to the optical construction of the lens that will generate ring-shape bokeh, there is a possibility for the photographer to widen the ways of expression through the image.


400mm F8 Mirror lens sample photo.jpg

Simple optical construction with 2 groups and 6 elements does not allow much chromatic aberrations to occur.

Optical structure.jpg

Focusing Kenko
MIL TOL 400mm F8 can focus only manually using wide with excellent grip focus ring on the body of the lens. The rotation of focus ring is very smooth. Rotation range is 270 degrees. In spite of long focal length focusing process will not take much time. Rotation of focus ring is smooth from near to far even in low temperature environment. There is no any sucking sound while rotating the focus ring, so there is no chance for dust in the air to be sucked inside the lens.

2.jpgMacro mode shooting
The field of view of Kenko MIL TOL 400mm F8 is 6°8′(by frame diagonal) and min. focusing distance is 1.15m that gives magnification 1:2.5. This lens is also suitable for macro shooting because it gives an opportunity to shoot an object wit size 6x9cm on full frame camera from distance of 115cm. The leaves below was shot from aprox. 3 meters to the object.

3.jpg Macro photo by 400mm F8.png

Hood and filters
Kenko MIL TOL Mirror lens 400mm F8 can be used with 67mm filters. The thread on the lens is also for hood to be attached on. In this case you may use 77mm lens attached on the hood. Mirror lens is very sensitive to front light. It is suggested to use hood during the shooting session.

Kenko_Hood_KMH_671_L.jpgLens metal hood KMH-671 MIl tol corrected.jpgKenko MIL TOL 400mm F8 with ND filter on

Color variations
Kenko MIL TOL Mirror lens 400mm F8 is presented in 3 colors: Black, Titanium and White. Every color is chosen in order to match with camera design, both DSLR and Mirror less. Other specifications are the same.3 lenses line up collage.jpg
MIL TOL Mirror 400mm F8 lens spotting scope kit for on-ground observation 
Besides MIL TOL 400mm F8 Mirror lens for photography we offer Camouflage "Mossy Oak” lens as a kit for on-ground observation with Scope Eyepiece adapter and hood included.
MIL TOL Mirror 400mm F8 lens spotting scope kit for on-ground observation
Besides MIL TOL 400mm F8 Mirror lens for photography we offer Camouflage "Mossy Oak” lens as a kit for on-ground observation with Scope Eyepiece adapter and hood included.4961607421086.jpgSpotting scope kit content:

hood_camo_gr2.jpgHood 400mm_camo_gr.jpgMIL TOL 400mm F8 Mirror Lens se_t_camo2.jpgScope Eyepiece Adapter with MT Eyepiece 20

Hood: attaches to the front thread of the lens.
Scope Eyepiece Adapter (for T-mount): attaches to the lens mount. Equipped with removable tripod collar./

MT eyepiece 20 (MT22): 22mm focus length interchangeable eyepiece. Attaches to the Scope Adapter. Change the magnification of the whole optical system by using different eyepieces from the line.

Formula for calculating the magnification of the lens when different focal length eyepieces are used.
Formula.jpgSystem chartChart Mirror lens 400 F8.jpgMIL TOL 400mm F8 Mirror Lens is designed to be used as tele photo lens and as spotting scope for on-ground observation.
T-mount adapter is used to attach 400mm F8 Mirror Lens to the DSLR camera mount. Choose appropriate T-mount according to the camera mount.
To double focus length of the lens for shooting long distance objects use Kenko 2x tele converter.
To convert 400mm F8 Mirror Lens into field scope use Scope Eyepiece (for T-mount).

Reference information:

With non full-frame cameras due to small CCD size, field of view will change. With 2x crop-factor cameras (Olympus, Lumix, etc) field of view will be 3°4′.
With 1,5x crop factor cameras (Nikon DX, SONY NEX etc,) field of view will be 5°6′.
Hood is not included in the package. Please buy separately.T-mount adapters is not included in the package.

Please buy separately.

Instruction:
Brand Kenko
Model Kenko MIL TOL 400mm F8
Series MIL TOL
Type Mirror tele lens
Bayonet type T-mount (not included)
Color Black, Titanium, White
Country of origin Japan
Focal Length, mm 400
Max. aperture 8
Min. aperture 8
Field of view 6° 8′
Min. focal distance, m 1.15
Magnification 1:2.5
Filter size, mm 67
Coating Multi-coated
Optical construction 2 groups, 6 elements
Size (diameter x length), mm 74x82
Weight (without package), g 340
Hood Metal hood KMH-671 (filter size 77mm, not included)

Review of Kenko Mirror Lens 400mm F8

Marina Stepanenko, Vido
http://www.kenkoglobal.com/blog/2015/08/review-of-kenko-mirror-lens-400mm-f8.html

 

Review of Kenko Mirror Lens 400mm F8 from PRO PHOTO

From “Pro Photo"
http://www.kenkoglobal.com/blog/2015/08/review-of-kenko-mirror-lens-400mm-f8-from-pro-photo.html

Photos by Toshiya Ogawa (Japan)

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The world of MIL TOL Kenko Mirror Lens 400mm F8.0



MIL TOL OPTICAL SYSTEM PRESENTATION

Olympus OM-D with Kenko Reflex 400mm F8

 

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Kenko Mirror Lens 400mm F8.0

Extremely light and compact Kenko Mirror Lens 400mm F8 super telephoto lens for out door photographers.