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Sony SAL75300 75-300mm f4.5-5.6 lens review Gordon Laing, January 2007 / updated January 2008

/ Resolution / Corner sharpness / Fringe and macro / Geometry / Vignetting

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Sony 75-300mm vs Sony 18-70mm corner sharpness

  To compare the corner sharpness of the Sony 75-300mm against the Sony 18-70mm, we photographed the Enhanced Digital Camera Resolution Chart with each lens at their shortest and longest focal lengths and various apertures in Aperture Priority mode.

The cameras used for testing each lens were set to their best quality JPEG and default image tone and sharpening settings. The crops are taken from the extreme lower left corner of the chart and presented here at 100%.

Zoomed-out to its shortest focal length, the 75-300mm is slightly soft in the extreme corners until the aperture is closed right down to around f11 to f16. The 18-70mm kit lens is much sharper in the corners at 70mm, so if you want the best results at around this focal length, go for the 18-70mm kit lens and zoom it all the way in.

Zoom the 75-300mm all the way in though and it performs much better in the extreme corners, although as seen in the crops below, it does exhibit some coloured fringing.

Corner sharpness, wide angle

Sony 75-300mm using Sony Alpha A100
Sony 75-300mm at 75mm f4.5
Sony 75-300mm at 75mm f5.6
Sony 75-300mm at 75mm f8
Sony 75-300mm at 75mm f16
75-300mm at 75mm f4.5
75-300mm at 75mm f5.6
75-300mm at 75mm f8
75-300mm at 75mm f16

Sony 18-70mm using Sony Alpha A100
Sony 18-70mm at 18mm f3.5
Sony 18-70mm at 18mm f8
Sony 18-70mm at 18mm f16
18-70mm at 18mm f3.5
18-70mm at 18mm f5.6
18-70mm at 18mm f8
18-70mm at 18mm f16

Corner sharpness, telephoto

Sony 75-300mm using Sony Alpha A100
Sony 75-300mm at 300mm f5.6
Sony 75-300mm at 300mm f8
Sony 75-300mm at 300mm f11
Sony 75-300mm at 300mm f16
75-300mm at 300mm f5.6
75-300mm at 300mm f8
75-300mm at 300mm f11
75-300mm at 300mm f16

Sony 18-70mm using Sony Alpha A100
Sony 18-70mm at 70mm f5.6
Sony 18-70mm at 70mm f8
Sony 18-70mm at 70mm f16
18-70mm at 70mm f5.6
18-70mm at 70mm f8
18-70mm at 70mm f11
18-70mm at 70mm f16

Sony SAL75300 75-300mm lens results continued...

Outdoor / Resolution / Corner sharpness / Fringe and macro / Geometry / Vignetting

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