08-10-2011, 11:13 AM
[quote name='Klaus' timestamp='1312970601' post='10572']
They are darn close. The Sigma has virtually no bokeh fringing whereas the Canon provides a better bokeh. The IS is superior to the OS in macro scenarios. The Sigma has a bigger working distance.
[/quote]
The Canon also is weather sealed.
Both are nice, as is the Tarmon 180mm f3.5 (which lacks both the HSM/USM and thew IS/OS).
They are darn close. The Sigma has virtually no bokeh fringing whereas the Canon provides a better bokeh. The IS is superior to the OS in macro scenarios. The Sigma has a bigger working distance.
[/quote]
The Canon also is weather sealed.
Both are nice, as is the Tarmon 180mm f3.5 (which lacks both the HSM/USM and thew IS/OS).