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Canon EOS 400D / Digital Rebel XTi kit lens upgrade group test Gordon Laing, September 2006 / updated July 2007

More results: Outdoor / Resolution / Corner sharpness / Fringe and macro / Geometry / Vignetting

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Canon EOS 400D / Digital Rebel XTi lens upgrade purple fringing comparison

 

To measure and compare purple fringing caused by chromatic aberrations and sensor blooming, we photographed a high contrast test chart using each lens set to its shortest and longest focal lengths with the aperture wide open. The crops are taken from the upper left corner of the chart and presented here at 100%.

All four lenses perform similarly here, exhibiting some coloured fringing in their corners when zoomed-out, but little when zoomed-in.


Canon EF-S 17-55mm f/2.8 IS USM
Canon EF-S 17-85mm f/4-5.6 IS USM
Canon EF-S 18-55mm f/3.5-5.6
Canon EF 17-40mm f/4.0L USM
Canon 17-55 EF-S at 17mm f2.8
Canon 17-85 EF-S at 17mm f4
Canon 18-55mm EF-S at 18mm f3.5
Canon 17-40 EF-L at 17mm f4
17-55mm EF-S at 17mm f2.8
17-85mm EF-S at 17mm f4.0
18-55mm EF-S at 18mm f3.5
17-40mm EF L at 17mm f4
Canon 17-55 EF-S at 55mm f2.8
Canon 17-85 EF-S at 85mm f5.6
Canon 18-55mm EF-S at 55mm f5.6
Canon 17-40 EF-L at 40mm f4
17-55mm EF-S at 55mm f2.8
17-85mm EF-S at 85mm f5.6
18-55mm EF-S at 55mm f5.6
17-40mm EF L at 40mm f4



Canon EOS 400D / Digital Rebel XTi lens upgrade macro comparison


To measure and compare macro performance we photographed a chart using each lens at a focal length and distance which delivered the maximum possible reproduction. The dark lines are 10mm apart and the result is not cropped. Smaller areas are preferred in this test.

While none of the four can be described as macro lenses, the best result is actually enjoyed by the budget EF-S 18-55mm, delivering a maximum area of 66x44mm. Next is the EF 17-40mm, followed by the EF-S 17-85mm and finally the EF-S 17-55mm. It's interesting to note the budget kit lens delivers an area four times smaller than the EF-S 17-55mm at its closest focusing distance.


Canon EF-S 17-55mm f/2.8 IS USM
Canon EF-S 17-85mm f/4-5.6 IS USM
Canon EF-S 18-55mm f/3.5-5.6
Canon EF 17-40mm f/4.0L USM
Canon 17-55mm EF-S macro test
Canon 17-85mm EF-S macro test
Canon 18-55mm EF-S macro test
Canon 17-40 EF-L macro test
17-55mm EF-S at 55mm f8
Max area of 124x82mm
17-85mm EF-S at 85mm f8
Max area of 104x70mm
18-55mm EF-S at 55mm f8
Max area of 66x44mm
17-40mm EF L at 40mm f8
Max area of 92x62mm

Canon EOS 400D / Rebel XTi lens upgrade results continued...

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


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Canon EF-S 17-85 IS USM


 



 



All words, images, videos and layout, copyright 2005-2014 Gordon Laing. May not be used without permission.

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