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 Extender EF 1.4x II
- Lens construction: 5 elements in 4 groups
- Dust and moisture resistant construction
- Extends the master lens focal length by 1.4x
- Minimum loss of lens performance
- Reduces inner reflection for higher image quality
- Weight: 220 (grams)
Successors to the EF1.4x this model offers valuable improvements for further enhanced image quality. This extender allows users to combine practicality and functionality with a new optical system allowing them to extend the master lens focal length by 1.4x, with
minimal loss of lens performance or image quality. With a dust - and moisture-resistant construction this extender has been designed to reinforce the EOS system. Specially designed to work in conjunction with the EOS-1V and IS super telephoto L-series lenses, it makes a highly dust - and water-resistant combination. The EF1.4x II features improved anti-reflection materials inside the lens-barrel as well as improved coating around the outer edges of the lenses to reduce flare. All of these improvements will allow professional photographers to capture higher quality images than ever before.
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 Extender EF 2x II
- Lens construction: 7 elements in 5 groups
- Dust and moisture resistant construction
- Extends the master lens focal length by 2x
- Minimum loss of lens performance
- Reduces inner reflection for higher image quality
- Weight: 265 (grams)
The EF 2x II doubles the focal length of any lens it's mounted to, and reduces its effective aperture by two stops. Successors to the EF2x this model offers valuable improvements for further enhanced image quality. This extender allows users to combine practicality and functionality with a new optical system allowing them to extend the master lens focal length by 2x, with
minimal loss of lens performance or image quality. With a dust - and moisture-resistant construction this extender has been designed to reinforce the EOS system. Specially designed to work in conjunction with the EOS-1V and IS super telephoto L-series lenses, it makes a highly dust- and water-resistant combination. The EF2x II features improved anti-reflection materials inside the lens-barrel as well as improved coating around the outer edges of the lenses to reduce flare. All of these improvements will allow professional photographers to capture higher quality images than ever before.
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