Sima 150-500mm F5-6.3 APO DG HSM with Kenko 1.5X TC

Started Jun 5, 2011 | Discussions thread
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snooked
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Sima 150-500mm F5-6.3 APO DG HSM with Kenko 1.5X TC
Jun 5, 2011

For kicks I tried my K5 and Sigma 150-500mm F5-6.3 with my Kenko Pz-AF 1.5X Teleplus SHQ tele-converter. That's 750mm (1125mm Equivalent). I used it hand held (not advised) and got reasonable results. Surprisingly focus speed is slowed little, even at 500mm. This is a revelation since not even my DA* 50-135 mm F2.8 works with the tele-converter. Pentax has something to learn from this Sigma HSM focus system.

In the photos it appears Egret Chicks are not very patient when hungry.

Ed

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