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AGOODAY: no teleconverter or teleconverter?
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AGOODAY: moon crater, no TC vs TC
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AGOODAY: moon (400mm f5.6 + Sigma 1.4 TC)
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AGOODAY: moon (sigma 150-500 + Sigma 1.4TC)
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AGOODAY: moon - photographed with prime (400mm f5.6 + Canon 1.4 TC mk II)
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AGOODAY: Moon from Tuscany, canon 400mm f5.6 prime with 1.4 TC