Sigma Art DG 50/1.4

Reference taking lens. Performance is uniformly excellent, but deteriorates approximately 5% at 50-70mm working distance, where the best enlarging lenses peak. At 80mm and longer it remains an affordable benchmark. However, post-production correction of barrel distortion reduces corner performance by c.3%.

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Weight	905 g
Dimensions	50 mm
Focal Length (mm)	50
Max Aperture (f)	1.4
Min Aperture (f)	16
Aperture Blades	9 (Curved)
Elements	13 / 8
Front Thread	72mm
Production	2015-x
Contrast	Very High
Colour	9
Focus Shift	None
Flare	9
Stars	8.5

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