joe | profile | all galleries >> Lens Tests / Galleries >> Lens Tests >> EF-S 60 / 2.8 Macro on a 20D >> Aperture | tree view | thumbnails | slideshow |
The purpose of these shots is to show how
resolution is affected by aperture. All shots were on a tripod and
used ISO 100 with AF set at the middle of the tree. Note how the shutter
speeds exactly follow the apertures -- unlike the vignetting test.
Interesting.
It appears as though there's little difference in sharpness from f / 2.8 to f / 11. At f / 16 we begin to see some degradation which worsens at f / 22 and becomes horrible by f / 32. That's pretty impressive! |