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Shuttershock and Olympus 75-300

Since a couple of months I own the Olympus 75-300 III. And since day one, I wasn't happy with the results I got. 
All the pictures shot at +/- 300 mm where soft and looked like there was motion blur. How's that possible? I tried it at a 1/1000th of a second, but still the motion blur in my pictures. I regret that I ever sold my Pentax with the 55-300 for this awfull lens!
But... Most reviews of this lens are positive. Is my copy of this lens bad?
I then figured out by reading forums that it could be a phenomena called 'shuttershock'. It that case, the shock of the shutter causes enough movement so the image is blurred.
For example:

How to fix this?
My camera has several drive modes, including one called 'anti-shock'. And that does magic.
In that mode The pictures are sharp again. No motion blur is visible! 
The downside of this mode is that the fasted drivemode can't be used.

The effect of a polarizing filter

Since some weeks I bought a polarizing filter. The Hoya HD. The filter is very thin so you can use it with a wide-angle lens. The filter is even thinner than the B+W slim polarizing filters! That makes it not so easy to attach the filter to the lens, but when done, the results are great.

There's a little white triangle so you can see how the filter is set. When the white triangle is on top reflections are maximum. When the white triangle is on the left or right, reflections are minimum. (when shooting at an angle of 45 degrees at a window)

mouse over to see the effect

When shooting straight at the window this is the effect:

mouse over to see the effect

Here a sample of real life, the blue sky with white clouds:

mouse over to see the effect

As you can see the reflections changed. On the original the sky is light blue, on the photo with the polarizing filter the sky is darker. Also the reflections are gone. You can see that on the pole in the picture.

A video showing the effect when turning the filter:

As you can see the effect of a polarizing filter is great and everybody should have one in his/her bag!

more about polarizing filters:

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