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• Manufacturer's technical data.

Manufacturer description #1

MIL TOL is a universal tele lens optical custom-free system that was designed to embrace photographing astronomy and outdoor activities using only one lens and adopted accessories. MIL stands for “watch” and TOL stands for “shoot” or “take picture”. MIL TOL SYSTEM is represented by 3 main lenses and optical accessories that in certain combination allow using each lens as photographic lens, spotting scope and telescope. System is dedicated to those who love nature, photography and astronomy. You can convert the lens into tele lens for photographing, spotting scope for on-ground observation and telescope for celestial bodies observation. Save your expenses and place in the backpack.

Kenko MIL TOL 400mm F6.7 ED is a refractor type optical tele lens with 400mm focal length. Photographers who use tele lenses for aircrafts spotting, nature or animals shooting might highly value Kenko MIL TOL 400mm F6.7 ED. Thanks to simple optical construction this lens is light, of excellent quality and affordable in price comparing with major AF lenses with the same focal length. MIL TOL 400mm F6.7 ED adopts T-mount system and can be used with any DSLR or non-reflex cameras. Just choose the right T-mount adapter. Moreover, using different optical adapters like Scope Eyepiece or Zenith mirror lens it can be converted into spotting scope or telescope. Optical system with minimum optical elements ensures minimum chromatic aberrations, that are specific for tele lenses. Thanks to high optical quality Kenko MIL TOL 400mm F6.7 ED tele lens will give you the best result you can expect from the lens of similar category.

Manufacturer description #2

Kenko MILTOL 400mm F6.7 ED is a refractor type optical tele lens with 400mm focal length. Thanks to simple optical construction this lens is light, of excellent quality and affordable in price comparing with major AF lens with the same focal length.

MILTOL 400mm F6.7 ED adopts T-mount system and can be used with any DSLR or non- reflex cameras. Just choose the right T-mount adapter. Moreover, using different optical adapters like Scope Eyepiece or Zenith mirror lens it can be converted into spotting scope or telescope.

Kenko Tokina developed MILTOL as a system of interchangeable optical elements and accessories on the basis of T-mount adapter. Thus, MILTOL 400mm F6.7 ED can be used with any DSLR or non-reflex cameras. Moreover, using different optical adapters like Scope Eyepiece or Zenith mirror this lens can be converted into spotting scope or telescope. In Kenko MILTOL 400mm F6.7 ED Kit T-mount adapter (for Canon or Nikon) is included.

Optical system with minimum optical elements ensures minimum chromatic aberrations, that are specific for tele lenses. Thanks to high optical quality Kenko MILTOL 400mm F6.7 ED tele lens will give you the best result you can expect from the lens of similar category.

ED - Extra Low Dispersion Glass is used to reduce chromatic aberrations. Since average glass has a different refractive index for different light spectrum rainbow color aberrations on the edges of objects may occur. For this reason the image can be unsharp and fuzzy. The use of Extra Low Dispersion Glass minimize these negative effects and make image clear and sharp.

Multi coating and Extra Low Dispersion glass provides excellent resolution and contrast of the image. F6.7 helps to achieve good depth of focus field and useful in dark conditions.

Kenko MILTOL 400mm F6.7 ED can focus only manually using wide with excellent rubber grip focus ring on the body of the lens. The rotation of focus ring is very smooth. Rotation range is 262 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. Manual focus will be a good school for beginners and raise nostalgic feelings in the minds of elder generation photographers.

Kenko MILTOL 400mm F6.7 ED adopts to T-mount attachment system that allows you to use this lens with any camera mount (DSLR or non-reflex cameras) or convert this lens into telescope or spotting scope using corresponded optical attachment.

Due to long focal length it is recommended to use Kenko MILTOL 400mm F6.7 ED with tripod. For this purpose lens has a tripod collar. Mount lens on the tripod using this tripod collar in order to balance lens and camera, so as to minimize load on the camera mount. Hood and filters Kenko MILTOL 400mm F6.7 ED is equipped with 67mm filter thread. Lens hood that is included in the lens kit can also be attached to the lens. While carrying lens hood may be attached contrariwise.

Photographers who use tele lenses for aircrafts spotting, nature or animals shooting might highly value Kenko MILTOL 400mm F6.7 ED. Once this lens is converted into spotting scope using Scope Eyepiece attachment, birds spotters will be satisfied with it. 
Astronomical observers are also target range of users. To convert MILTOL 400mm F6.7 ED into telescope use Zenith attachment which is offered separately.

Kenko MILTOL 400mm F6.7 ED is presented in 3 colors: black, camouflage from "Mossy Oak" and "Realtree". Every color variation lens can be mounted on any camera using corresponded T-mount adapter. Originally, Kenko MILTOL 400mm F6.7 ED black is offered as photo lens with T-mount adapter included (For Nikon or Canon), camouflage "Mossy Oak" lens as a kit for on-ground observation with Scope Eyepiece adapter included, and camouflage "Realtree" as kit for astronomic observation with Zenith Mirror adapter.

From the editor

Kenko also offered a ED Flattener for this lens. This accessory was a simple optical system of 3 elements in 2 groups (including ED glass) that provided better aberration correction and sharper images across the entire frame.

Lenses with similar focal length