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You can remove the IR cut filter on Sigma Foveon cameras - it's fun!
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Kolari IR Chrome Filter + Hot Mirror… less SIGMA sd Quattro + A Whole Lot of Preamble. – Eric L. Woods
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Sigma SD Quattro + 30mm f/1.4 Art lens From Christopher's Gear Shop On Gear Focus
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SD Quattro Infrared: Sigma Camera Talk Forum: Digital Photography Review
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Sigma sd Quattro Review
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You can remove the IR cut filter on Sigma Foveon cameras - it's fun!
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You can remove the IR cut filter on Sigma Foveon cameras - it's fun!
Straightforward: Sigma SD Quattro H Review | Professional Photographers of America
Sigma SD Quattro + 30mm f/1.4 Art lens From Christopher's Gear Shop On Gear Focus
