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  1. tamron af teleconverter
    Tamron 2X AF Teleconverter for Canon EOS

    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 ...

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  2. tamron af teleconverter
    Tamron 2X AF Teleconverter for Nikon AF-D

    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 ...

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  3. 24% offtelevue eyepiece fits 25
    Tele Vue 12mm Nagler IV Eyepiece, fits 2" & 1.25".

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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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  4. 29% offcanon tele date battery
    Canon Prima Tele Date Battery

    Lithium Ion

    Canon Prima Tele Date Battery. This is a 3 Volt, Lithium Battery . Dimensions: 0.88 x 0.88 x 0.12.

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  5. kenko mc4
    Kenko 2X Teleplus MC4 DG Teleconverter for Canon EOS

    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 ...

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  6. 25% offtelevue tele vue adapter
    Tele Vue Adapter for Schmidt-Cassegrain Telescopes.

    Weight: 0.3lb

    Adapter to use Televue Short Tube 2" Diagonal #DPS-2004 on Schmidt-Cassegrain Telescopes For the Standard Size 2" Diagonals #DSC-2001 and DPC-2001 use the #ACC-003 Long Schmidt Cassegraing Adapter

    Details on Tele Vue Adapter for Schmidt-Cassegrain Telescopes.

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  7. tamron sp pro teleconverter
    Tamron SP 1.4X Pro Teleconverter for Canon EOS

    Focal Length: 420mm - Lens Aperture: 4f-stops

    The Tamron SP AF Pro teleconverter features improved optical construction, and is designed to be used with lenses that are f/2.8 and of focal lengths of 90mm or greater.The 1.4x teleconverter (also known as a tele-extender) will multiply the focal length of the existing lens by 1.4x, and will cut back the amount of light by one f/stop. For example, using a 1.4x teleconverter with a 300mm lens will effectively increase the focal length to 420mm. A lens set to f/2.8 will now be f/4.Teleconverters are not ...

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  8. 25% offtele vue adapter
    Tele Vue Adapter for Long Schmidt-Cassegrain Telescopes

    Weight: 0.4lb

    Long Adapter to use Televue 2" Diagonals (#DPC-2002 and DSC-2001) on Schmidt-Cassegrain Telescopes For the Short Version 2" Diagonal #DPS-2004 use the #ACS-004 Shirt Schmidt Cassegraing Adapter

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  9. kenko mc4
    Kenko 2X Teleplus MC4 DG Teleconverter for Pentax AF

    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 ...

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  10. Kenko 2X Teleplus MC4 Teleconverter for Nikon AF-D

    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 Nikon AF-D

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  11. televue vue panoptic eyepiece
    Tele Vue 41mm Panoptic 2" Eyepiece.

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    The 41mm Panoptic eyepiece is a big brother to the 24mm Panoptic (largest 1.25" field). With its 46mm field stop, the 41mm Panoptic delivers the largest 2" field possible. An adjustable and removable screw-type top allows quick, comfortable eye positioning. The scalloped shape gives a positive grip. Like all Tele Vue eyepieces, these new models employ matched coatings along with the latest coating techniques to maximize transmission and contrast. Optical and cosmetic inspection of every eyepiece assures you'll ...

    Details on Tele Vue 41mm Panoptic 2" Eyepiece.

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  12. tamron sp pro teleconverter
    Tamron SP 2X Pro Teleconverter for Nikon AF-D

    Optical Zoom: 2X - Focal Length: 90mm

    The Tamron SP AF Pro teleconverter features improved optical construction, and is designed to be used with lenses that are f/2.8 and of focal lengths of 90mm or greater. 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 ...

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  13. kenko mc-7
    Kenko 2X Teleplus MC7 DG Teleconverter for Nikon AF-D

    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. 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 2X Teleplus MC7 DG Teleconverter for Nikon AF-D

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  14. tamron sp pro teleconverter
    Tamron SP 2X Pro Teleconverter for Canon EOS

    Optical Zoom: 2X - Focal Length: 90mm

    The Tamron SP AF Pro teleconverter features improved optical construction, and is designed to be used with lenses that are f/2.8 and of focal lengths of 90mm or greater. 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 ...

    Details on Tamron SP 2X Pro Teleconverter for Canon EOS

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  15. 28% offkenko mc4
    Kenko 2X Teleplus MC4 DG Teleconverter for Minolta/Sony AF

    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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  16. kenko mc4
    Kenko 2X Teleplus MC4 DG Teleconverter for Nikon AF-D

    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

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  17. 15% offtelevue mirror star diagonal
    Tele Vue 2" Everbrite Mirror Star (90{degrees}) Diagonal with Brass Clamp ...

    Weight: 1.1lb

    This Version utilizes the same construction as the 2" Everbrite Diagonal #DPC-2002, except for the shorter front. This new "short front" Diagonal was designed to allow more "through fork" motion when used with the new ACS-0004 Short tube Schmidt Cassgrain Adapter. This Digonal can also be usedin any other 2" Diagonal application as well. However the Standard 2" Everbrite Diagonal (DPC-2002) provides increased locking stability in non SCT applications Important notes for users of f/6.3 SCT Reducers 1) The ...

    Details on Tele Vue 2" Everbrite Mirror Star (90{degrees}) Diagonal with Brass Clamp Ring - Short Front Tube.

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  18. qms dg apo teleconverter
    Sigma 2X EX DG APO Teleconverter for Minolta/Sony AF

    Optical Zoom: 2X - Focal Length: 300mm

    This Tele Converter 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. Note: Due to the high optical quality of this teleconverter, this item will only fit and work with a select list of lenses. Please click here for a compatibility chart of all compatible lenses. Note: The DG denotes added coating that ...

    Details on Sigma 2X EX DG APO Teleconverter for Minolta/Sony AF

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  19. kenko 300 dg teleconverter
    Kenko 2X Teleplus PRO 300 DG Teleconverter for Minolta/Sony AF

    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

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  20. 13% offtamron macro autofocus lens
    Tamron Zoom Telephoto 70-300mm f/4-5.6 Di LD Macro Autofocus Lens for Canon ...

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    Focal Length: 70mm - Lens Aperture: 4f-stops

    The Tamron AF 70-300mm f/4-5.6 Di LD Macro lens is a quality compact ultra tele zoom lens which covers the 70mm to 300mm telephoto range, with a maximum magnification ratio of 1:2 at the tele end. This lens delivers ultimate handling ease and portability in the field due to its lightweight size and mechanical operation. Best suited for shooting outdoors to make full use of the real telephoto of 300mm as well as providing diversity in portraiture using the medium focal length ranges of 70mm to 135mm. Di ...

    Details on Tamron Zoom Telephoto 70-300mm f/4-5.6 Di LD Macro Autofocus Lens for Canon EOS -USA-

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