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Canon EOS 30D review Gordon Laing, July 2006

Outdoor
/ Resolution / Noise

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Canon EOS 30D resolution comparison
 
To measure resolving power we photographed the Enhanced Digital Camera Resolution Chart with each camera using its best quality JPEG and default image tone and sharpening settings. The lenses were set to f8 using Aperture Priority mode. The chart allows measurements to be made up to 4000 lpph, which is double that of the standard ISO12233 chart.

The crops are taken from the originals, saved as High Quality JPEGs in Photoshop CS2 and presented here at 100%. Each number represents 100 lines per picture height (lpph), so a figure of 20 means a resolution of 2000 lpph.

With 1800 and 1650 lpph of horizontal and vertical resolution respectively, the 30D performs identically to the earlier 20D, and very close to the 350D / Rebel XT. This is no surprise since the 30D and 20D share the same 8.2 Megapixel sensor, while the 350D / Rebel XT is only a fraction below at 8 Megapixels.

Here you can also see the relative advantages of a 10.2 Megapixel body such as the Nikon D200 and Sony A100, along with the 12.8 Megapixel Canon EOS 5D. Each clearly delivers a superior result to the 30D here, but it's important not to view technical chart results in isolation.

In practice with real-life subjects, the differences can be much closer, as illustrated on the previous page. Certainly in real-life tests, there's not a huge difference in resolving power between the 8.2 Megapixel 30D and 10.2 Megapixel D200 / A100, and as such, a buying decision should not be based on this figure alone.

While the Nikon D200 and Sony A100 will resolve fractionally higher detail than the 30D in practice, you'd really need to go to the Canon 5D or Nikon D2X to notice any significant difference. That said, we are looking forward to retesting the Sony A100 when higher quality lenses become available to see what it's capable of.
Canon EOS-30D with Canon EF 85mm f1.8 USM
 
Canon EOS-5D with Canon EF 85mm f1.8 USM
Canon EOS-30D with Canon EF 85mm f1.8 USM horizontal resolution
Canon EOS 5D with Canon EF 85mm f1.8 USM horizontal resolution
1800 lpph, 85mm, f8, 100 ISO
2400 lpph, 85mm, f8, 100 ISO

Nikon D200 with Nikkor AF 50mm f1.8
Sony DSLR-A100 with DT 18-70mm
Nikon D200 with Nikkor AF 50mm f1.8 horizontal resolution
Sony DSLR-A100 with DT 18-70mm horizontal resolution
2200 lpph, 50mm, f8, 100 ISO
2150 lpph, DT 18-70mm at 35mm, f8, 100 ISO


Canon EOS-30D with Canon EF 85mm f1.8 USM
 
Canon EOS-5D with Canon EF 85mm f1.8 USM
Canon EOS-30D with Canon EF 85mm f1.8 USM vertical resolution
Canon EOS 5D with Canon EF 85mm f1.8 USM vertical resolution
1650 lpph, 85mm, f8, 100 ISO
2300 lpph, 85mm, f8, 100 ISO

Nikon D200 with Nikkor AF 50mm f1.8
Sony DSLR-A100 with DT 18-70mm
Nikon D200 with Nikkor AF 50mm f1.8 vertical resolution
Sony DSLR-A100 with DT 18-70mm vertical resolution
2200 lpph, 50mm, f8, 100 ISO
2150 lpph, DT 18-70mm at 35mm, f8, 100 ISO

Canon EOS 30D results continued...

Outdoor / Resolution / Noise

 

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