Tele? How about these?

Placed between the camera body and lens, a teleconverter contains a set of optics that will effectively increase the focal length of a lens by a factor of 2x . ...

This 2x teleconverter attaches to any T-mount lens, and effectively doubles the focal length of that lens. for example using this teleconvertor with a 500mm F5.6 ...

Placed between the camera body and lens, a teleconverter contains a set of optics that will effectively increase the focal length of a lens by a factor of 2x . ...

Placed between the camera body and lens, a teleconverter contains a set of optics that will effectively increase the focal length of a lens by a factor of 2x . ...

Telephoto zoom lenses with tele-macro function and optimised for digital SLR cameras The performance telephoto zoom lens is capable of shooting with a maximum ...

Flush nose piece for Bino Vue. Necessary when used with Tele Vue 85 scope and 60 degree diagonal

Specially for eyeglass wearers, Tele Vue included a long eye relief 40mm focal length in the series with a 43 degree apparent field. Like the 55mm, its focal plane ...

Whiter and brighter images. Simply put, that is the benefit the Everbrite mirror coating. This exotic, dielectric, nonmetallic coating is 99% reflective across the ...

Blackened lens edges, anti-reflection threads and rubber eyeguards deliver maximum contrast. 100% full field visual inspection on our own flat-field test ...

The 10mm Ethos delivers: 100° apparent field (50% larger in area than 82° Naglers), comfortable eye-relief, (accepts DIOPTRX eyesight astigmatism ...

With 110 deg., the Ethos-SX has 21% more AFOV area than the 100 deg. Ethos design. This permits 62% power increase from a 6mm Ethos, while retaining 68% of its ...

This is a somewhat smaller, lighter and more powerful version of the celebrated 31 Nagler Type 5. It weighs about 1.6 lbs and has a field stop diameter of 35mm.

Maximize your "spacewalk" experience with the 21mm Ethos. Transform your passage through the Milky Way with the 21mm's nexus of contrast, power and field. ...

Extend the range of your primary lens with the SAL-20TC. Get more coverage distance and capture more subjects without the burden of extra equipment. ...

The dedicated 1.4x APO Teleconverter features a high performance 5 element/3 group optical design, and it is optimized for use with long telephoto and telezoom ...

The dedicated 1.4x APO Teleconverter features a high performance 5 element/3 group optical design, and it is optimized for use with long telephoto and telezoom ...