sony 16 + wa converter =12mm vs sigma 8-16 12mm
by masimo
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Tamron 17-50 f/2.8 vs Sigma 17-70 f/2.8-4.5 vs Sigma 30mm f/1.4
by Alexis Hadjisoteriou
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Canon 24-105 L f/4 vs Sigma 17-70 f/2.8-4.5
by Alexis Hadjisoteriou
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Nikkor 17-55 f/2.8 F-S DX vs Sigma 18-50 f/2.8 DC
by Miljenko Devcic
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5D Mk IV vs 70D and Canon 400mm f/5.6 prime vs Sigma 150-600mm f/6.3
by Krüger Naturfotografie
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Sigma 15-30mm f3.5-4.5 EX Aspherical DG DF
by David Behrens
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Sigma 10-20 • Tamron 11-18 • Sigma 12-24
by Nico Van Ganzewinkel
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Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary
by Greg Lavaty
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Sigma 12-24mm f/4.5-5.6 DG HSM II - Nikon AF-S DX NIKKOR 18-140mm f/3.5-5.6G ED VR
by GaleriaFotoStefan
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Astros using Sigma 120-300 f/2.8
by Danny Daniel
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