Sigma Corporation
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Apochromat
Infrared photography
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Comparative genomic hybridization
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Macro photography
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Nikkor
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Ernst Abbe
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Objective (optics)
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Reflecting telescope
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List of telescope types
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Zeiss (company)
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Camera lens
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Achromatic lens
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Optical microscope
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Apo
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Lowell Observatory
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List of inventors
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East Midlands
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Fluorite
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Lens
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Abbe number
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