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Covering entire imaging-field of DSLR with full-format. The kit consists of the high performance flattener lens and connecting rings (Spacer Ring SD81, EX Tube 66) designed for the SD81S, SD103S and SD115S optical tubes.
Ultra sharp image over entire imaging field on DSLR full-format sensor. The SD flattener HD improves the flat-field performance toward the edge of field of view closely maintaining the original focal length of the SD-series optical tubes, fully covering the imaging field of DSLR camera with full-format sensor at image circle of 44mm diameter.
