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Weight: 1.5lb
When Tele Vue designed the Radian series of eyepieces, Tele Vue used the Nagler concept as the basis. However with the Radians, Tele Vue decided to balance size, weight, and cost relative to a consistent 20mm eyerelief. During the design process Tele Vue found that we could not only balance these factors for 1.25" focussers, but improved glass types lead to better imaging, contrast enhancement, reduced pincushion, ghost suppression, and a newer concept in a click-stop adjustable eyeguard as well.Applying that ...Details on Tele Vue 12mm Nagler IV Eyepiece, fits 2" & 1.25".
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Optical Zoom: 2X - Focal Length: 300mm
The 2X teleconverter (also known as a tele-extender) will multiply the focal length of the existing lens by 2X, and will cut back the amount of light by 2 f/stops. For example, using a 2X teleconverter with a 300 mm lens will effectively increase the focal length to 600 mm. A lens set to f/2.8 will now be f/5.6. Teleconverters are not recommended for lenses wider than 50mm, e.g. 28-105mm. However, full AF operation is only possible with lenses with open aperture of f/2.8 or brighter. Please be aware that AF ...Details on Kenko 2X Teleplus MC4 DG Teleconverter for Minolta/Sony AF
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Details on Tele Vue 90{degrees} Everbrite Diagonal 1.25" with Brass Clamp Ring.
In Stock
Optical Zoom: 2X - Focal Length: 300mm
The 2X tele-converter (also known as a tele-extender) will multiply the focal length of the existing lens by 2X, and will cut back the amount of light by 2 f/stops. For example, using a 2X tele-converter with a 300 mm lens will effectively increase the focal length to 600 mm. A lens set to f/2.8 will now be f/5.6. Tele-converters are not recommended for lenses wider than 50mm, e.g. 28-105mm. However, full AF operation is only possible with lenses with open aperture of f/2.8 or brighter. Please be aware that AF ...Details on Kenko 2X Teleplus MC4 DG Teleconverter for Pentax AF
In Stock
Optical Zoom: 2X - Focal Length: 300mm
The 2X teleconverter (also known as a tele-extender) will multiply the focal length of the existing lens by 2X, and will cut back the amount of light by 2 f/stops. For example, using a 2X teleconverter with a 300 mm lens will effectively increase the focal length to 600 mm. A lens set to f/2.8 will now be f/5.6. Teleconverters are not recommended for lenses wider than 50mm, e.g. 28-105mm. However, full AF operation is only possible with lenses with open aperture of f/2.8 or brighter. Please be aware that AF ...Details on Kenko 2X Teleplus MC4 DG Teleconverter for Nikon AF-D
In Stock
Lithium ion
Quantum Tele Battery. This is a 3 Volt, Lithium BatteryIn Stock
$17.99
$14.57In Stock
Optical Zoom: 2X - Focal Length: 300mm
The 2X teleconverter (also known as a tele-extender) will multiply the focal length of the existing lens by 2X, and will cut back the amount of light by 2 f/stops. For example, using a 2X teleconverter with a 300 mm lens will effectively increase the focal length to 600 mm. A lens set to f/2.8 will now be f/5.6. Teleconverters are not recommended for lenses wider than 50mm, e.g. 28-105mm. However, full AF operation is only possible with lenses with open aperture of f/2.8 or brighter. Please be aware that AF ...Details on Kenko 2X Teleplus MC4 DG Teleconverter for Canon EOS
In Stock
Lithium ion
Graflex Quantum Tele Battery. This is a 3 Volt, Lithium BatteryIn Stock
$17.99
$14.57Details on Orion 1.25" Standard Tele-Extender
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In Stock
Focal Length: 450mm - Lens Aperture: 4f-stops
The 1.5x teleconverter (also known as a tele-extender) will multiply the focal length of the existing lens by 1.5x, and will cut back the amount of light by one f/stop. For example, using a 1.5x teleconverter with a 300mm lens will effectively increase the focal length to 450mm. A lens set to f/2.8 will now be f/4. This DG teleconverter has upgraded Gate-Array IC circuitry to work better with digital SLR's and some of the digital SLR lenses*. This means that the converter's unique circuitry maintains signal ...Details on Kenko 1.5x DG AF Teleplus Teleconverter for Pentax
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Lithium ion
Sure Shot 80 Tele Battery. This is a 3 Volt, Lithium BatteryIn Stock
$17.99
$14.57Details on Orion 1.25" Variable Tele-Extender
In Stock
In Stock
Optical Zoom: 2X - Focal Length: 300mm
The 2X teleconverter (also known as a tele-extender) will multiply the focal length of the existing lens by 2X, and will cut back the amount of light by 2 f/stops. For example, using a 2X teleconverter with a 300 mm lens will effectively increase the focal length to 600 mm. A lens set to f/2.8 will now be f/5.6. Teleconverters are not recommended for lenses wider than 50mm, e.g. 28-105mm. However, full AF operation is only possible with lenses with open aperture of f/2.8 or brighter. Please be aware that AF ...Details on Kenko 2X Teleplus MC4 Teleconverter for Pentax AF
In Stock
Lithium ion
Sure Shot Tele Max Battery. This is a 3 Volt, Lithium BatteryIn Stock
$17.99
$14.57In Stock
Optical Zoom: 2X - Focal Length: 300mm
The 2X teleconverter (also known as a tele-extender) will multiply the focal length of the existing lens by 2X, and will cut back the amount of light by 2 f/stops. For example, using a 2X teleconverter with a 300 mm lens will effectively increase the focal length to 600 mm. A lens set to f/2.8 will now be f/5.6. Teleconverters are not recommended for lenses wider than 50mm, e.g. 28-105mm. However, full AF operation is only possible with lenses with open aperture of f/2.8 or brighter. Please be aware that AF ...Details on Kenko 2X Teleplus PRO 300 DG Teleconverter for Minolta/Sony AF
In Stock
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