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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.

Comparison between the old and the new 55-300 from Pentax

Last june, Ricoh released a new affordable telezoomlens, The Pentax-DA 1:4.5-6.3 55-300 ED PLM WR RE

This lens is an upgrade from the older 55-300 lens with the screwdrive motor. This is the first lens with a nearly silent motor. This lens is also smaller than it's older brother (in this case, the oldest, non WR version):

look at the size of the hood!
extended, the new version is longer

The advantage for me is that this lens fits inside my camerabag when attached to my camera and with the hood extended.

The other big advantage is the autofocus. Using the phase detection on my K-3 II the speed is much, much better, but also the hunting is a lot lesser. The difference is like having a picture or not having a picture. I first tested the lens on the beach with some Seagulls:

With the old lens, I wasn't able to get a picture of an flying bird. With this lens, I got around 80% of the pictures in focus. Above pictures where shot with the 9 AF points in the middle.

Also the noise is a bit different:

Are there some disadvantages to the new lens? Yes, there are. 
1. The already small aperture is even smaller 1/3 stop smaller. No big deal but it is an disadvantage
2. When zooming back from 300 to 55 mm, it's to easy to zoom to far back. (you should also use the button for folding the lens, not only by extending)


This lens is an big leap forward to the older 55-300. The AF is much faster and more reliable. Shooting birds and other moving subjects are now possible!

The image quality looks a bit better than the older lens, but I didn't pixelpeep that.

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