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Author Topic: Lens Sharpness Options  (Read 1843 times)

Offline Tripodasaurus

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Lens Sharpness Options
« on: March 29, 2013, 03:15:14 pm »
This a comment for this page on the website
By the way DxOMark, the Canon f2 IS USM lens is shown in the sharpness field map results as being measured at f1.4 although the accompanying text does relate to f2 -needs a small edit.

My conclusion from the sharpness test is that the top three lenses all have about the same sharpness at f4. The only material difference is how they fare at wider apertures. Could this not be used to advantage though? If one had a small subject in the centre of the image and wanted to isolate it from the background using f1.4, wouldn't the Zeiss come out on top as all else in the frame would not only be out of focus but also unsharp? Is sharp bokeh better or worse than unsharp bokeh?! If knowing the characteristics of the lens thanks to DxOMark, doesn't the Zeiss offer more creative options?

Offline Emilie_DxOMark

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Re: Lens Sharpness Options
« Reply #1 on: April 04, 2013, 05:04:50 pm »
Hello!

Thanks for your interest in DxOMark.

Depth of field is not taken into account for sharpness score. This ranking provides you with the sharpest lens without taking into account other aspects.
If depth of field is an important aspect, you can  filter the ranking with our filter tool and select lenses with the maximum aperture you need.

For wide aperture one other score which could be more helpful is the DxOMark score.
This score is computed for a lowlight condition, so the sharpest lenses at wider aperture will be the best ranked.

Best regards,

The DxOMark team

Offline Emilie_DxOMark

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Re: Lens Sharpness Options
« Reply #2 on: April 05, 2013, 09:20:21 am »
And thanks for noticing the error, this is now corrected.  :)