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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.

Why I love Pentax

Okay,  I confess, I use Pentax! Not because I'm 50+ and using my old lenses, not because I inherited some old stuff, but only because I bought the system three years ago. But why?

First when I was looking for a camera I watched for a Canon. The EOS 400D. But when I hold it in my hands at first, it feels like a plastic toy. I got cramp holding it... In the shop was only one Pentax: The K10D. I hold it and felt love. Wow, what a great ergonomics! But Pentax...? I didn't know the brand Pentax. But After a little research I found the K10D was "camera of the year 2006/2007".

After buying the K10d I started using it and the results where great. The camera was build like a rock, but not as expensive as a Canon or Nikon.

But after some time I wanted to expand my system. Pentax has some great and unique lenses! Like the limited primes, the DA* lensen etc. The greatest advantage over other makes is the size. (Okay Olympus was smaller, but also a smaller sensor).

I'm not interested in getting professional with my camera. So I don't 'need' the extra's of the Canikon system. So in the consumer system I like Pentax most.

But there's also a nonreasonal argument to choose Pentax:

I don't want a make everybody have. 

With Canikon I feel much like a sheep in a herd. I want something to distinguish me from others. I'm not that much sensitive for branding. I'm looking for things like specifications, ergonomics and distinction.

And yes, Pentax has its flaws. No tele like the Canon 100-400, no cheap 50mm prime, no real fast autofocus.

At the end I think for most Prosumers, the brand they choose is depended on the same thing you choose your wife or husband:

A little ratio and much feeling.

How do you choose your camera? Please leave your comment to discuss this. 

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