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|Dimensions||2.7 x 0.75" (68.5 X 19.5mm)|
|Weight||5 oz (143 g)|
I use this TC with the Sigma 150mm f2.8 Macro (pre-OS) on a Nikon, and the results are outstanding. Even with the D800 the ensamble is sharp enough at full aperture ("f4"), and a razor when stepped down. Almost no decay in the bokeh and absolutely no CA in any condition. But, but...
Awsome with 150mm Macro
No AF over f5.6 (Nikon), de facto only for Sigma lenses
A Very Good TC for the $$$. On my 70-200 it is as sharp as without the TC. I didn't notice any degradeing of speed or IQ. The colors are still vibrant and the contrast is still good. Sigma scores again.
Sharp, Fast, good construction