cuthbert
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i've just discovered that the digital picture have got some lens comparisons for nikon lenses too. this is pretty interesting because it's possible to compare lenses from both canon and nikon under the same controlled conditions - the results are actually pretty interesting:
Canon EF 1.4 vs Nikon 1.4D AF-S
http://www.the-digital-picture.com/...p=637&CameraComp=614&SampleComp=0&FLI=0&API=0
It's clear from this that the Canon lens suffers from less CA and is sharper at all apertures - the difference is less noticeable as you stop down.
Canon 85 1.8 vs Nikon 85 1.8D AF
http://www.the-digital-picture.com/...&Camera=453&Sample=0&FLI=0&API=0&LensComp=642
The Nikon lens shows significantly more CA wide open (and is softer), becoming less apparent as you stop down.
Canon 100mm 2.8 Macro vs Nikon 105mm 2.8G AF-S VR Micro
http://www.the-digital-picture.com/...&Camera=453&Sample=0&FLI=0&API=0&LensComp=645
here you can see the Nikon again shows more CA and is softer wide open than the Canon. The Canon at f2.8 seems to have better centre sharpness than the Nikon at f4. i know the focal length isn't quite the same, but it's the closed match i could find.
Canon 135mm f2 vs Nikon 135mm f2 AF-DC
http://www.the-digital-picture.com/...&Camera=453&Sample=0&FLI=0&API=0&LensComp=646
the Canon 135 blows the Nikon away wide open and the Nikon shows more CA across the aperture range.
Canon EF 24-70 vs Nikon 24-70
http://www.the-digital-picture.com/...Comp=618&CameraComp=614&SampleComp=0&Lens=101
the Nikon is noticeably sharper across the focal range and at all apertures.
Canon EF 70-200 f2.8 L II vs Nikon 70-200 f2.8G AF-S VR
http://www.the-digital-picture.com/...p=621&CameraComp=614&SampleComp=0&FLI=3&API=0
wide open it's pretty tricky to tell them apart at the wider end of the focal range, but heading towards 200mm the Canon is definitely sharper.
Canon EF 300mm f2.8 vs Nikon F2.8G AF-S VR II
http://www.the-digital-picture.com/...&Camera=453&Sample=0&FLI=0&API=0&LensComp=705
The Canon is much sharper wide open, at f4 the difference is minimal at the centre of the frame but still softer in the corners on the Nikon.
So a pretty mixed bag, but is this because the methodology is flawed, ie comparing consumer lenses with high end lenses (i'll be the first to admit that i don't know what some of the letters mean on the nikon lenses).
however, looking through the lens comparisons it does show that when it comes to zooms, there isn't that much between the two - some are sharper from Nikon, some from Canon. it's quite hard to compare some lenses exactly because there are differences in aperture and focal length with may account for the performance difference.
nevertheless, it seems to me that when it comes to primes being used wide open, canon lenses seem to be shaper across the board.
so, is this an apples vs oranges comparison?
the thing which really surprised me the difference between the 85mm and 135mm lenses - common lengths for portraiture - is quite stark wide open - these i thought would be lenses which the manufacturer would try their very best to make sharp and as free of CA as possible - or are there better lenses out there for Nikon which are just not listed in the comparisons ? I'm really only able to aperture as a guide here?
Canon EF 1.4 vs Nikon 1.4D AF-S
http://www.the-digital-picture.com/...p=637&CameraComp=614&SampleComp=0&FLI=0&API=0
It's clear from this that the Canon lens suffers from less CA and is sharper at all apertures - the difference is less noticeable as you stop down.
Canon 85 1.8 vs Nikon 85 1.8D AF
http://www.the-digital-picture.com/...&Camera=453&Sample=0&FLI=0&API=0&LensComp=642
The Nikon lens shows significantly more CA wide open (and is softer), becoming less apparent as you stop down.
Canon 100mm 2.8 Macro vs Nikon 105mm 2.8G AF-S VR Micro
http://www.the-digital-picture.com/...&Camera=453&Sample=0&FLI=0&API=0&LensComp=645
here you can see the Nikon again shows more CA and is softer wide open than the Canon. The Canon at f2.8 seems to have better centre sharpness than the Nikon at f4. i know the focal length isn't quite the same, but it's the closed match i could find.
Canon 135mm f2 vs Nikon 135mm f2 AF-DC
http://www.the-digital-picture.com/...&Camera=453&Sample=0&FLI=0&API=0&LensComp=646
the Canon 135 blows the Nikon away wide open and the Nikon shows more CA across the aperture range.
Canon EF 24-70 vs Nikon 24-70
http://www.the-digital-picture.com/...Comp=618&CameraComp=614&SampleComp=0&Lens=101
the Nikon is noticeably sharper across the focal range and at all apertures.
Canon EF 70-200 f2.8 L II vs Nikon 70-200 f2.8G AF-S VR
http://www.the-digital-picture.com/...p=621&CameraComp=614&SampleComp=0&FLI=3&API=0
wide open it's pretty tricky to tell them apart at the wider end of the focal range, but heading towards 200mm the Canon is definitely sharper.
Canon EF 300mm f2.8 vs Nikon F2.8G AF-S VR II
http://www.the-digital-picture.com/...&Camera=453&Sample=0&FLI=0&API=0&LensComp=705
The Canon is much sharper wide open, at f4 the difference is minimal at the centre of the frame but still softer in the corners on the Nikon.
So a pretty mixed bag, but is this because the methodology is flawed, ie comparing consumer lenses with high end lenses (i'll be the first to admit that i don't know what some of the letters mean on the nikon lenses).
however, looking through the lens comparisons it does show that when it comes to zooms, there isn't that much between the two - some are sharper from Nikon, some from Canon. it's quite hard to compare some lenses exactly because there are differences in aperture and focal length with may account for the performance difference.
nevertheless, it seems to me that when it comes to primes being used wide open, canon lenses seem to be shaper across the board.
so, is this an apples vs oranges comparison?
the thing which really surprised me the difference between the 85mm and 135mm lenses - common lengths for portraiture - is quite stark wide open - these i thought would be lenses which the manufacturer would try their very best to make sharp and as free of CA as possible - or are there better lenses out there for Nikon which are just not listed in the comparisons ? I'm really only able to aperture as a guide here?


