Decided on the Bigma OS

<p><img src="http://www.flickr.com/photos/highlydynamic/5602349023/" alt="" />Hi All,</p>

<p>After a lot of thought I traded in my Sigma 150mm f/2.8 for the Sigma 50-500 OS. I am pleased to announce that I am literally over the moon with it. Yes it is heavy and I am developing new muscles for it, it is also very big. All that aside, it is a fantastic lens which completes my kit perfectly.<br>

Many thanks to everyone who replied to my pre-purchase post. You helped me with my decision.<br>

Happy snapping and may the light be right always</p>

<p>Ben</p><div></div>

<p>Hi Ben,<br />Congrats on your new purchase. I too own a Sigma 150-500mm OS (which is size and weight almost same as 50-500mm) and extremly happy with the results too. Like you said, if you have good light, even @ 500mm it produce very sharp pictures. Most of the time I used it with a monopod so do not have much of a problem with the weight.<br>

I have a Folder in my galary called Sri Lanka wildlife, all those pictures were taken using the Sigma 150-500mm & D7000. </p>

<p>A few people have issues with Sigma lenses for some reason. I suspect the lens is not the issue, but it's hard to put a hypothesis together. I have missed focus on a few occasions with my 70-200/2.8 but I think the issue was using line-type AF sensors (on the borders of the frame) as opposed to cross-type (in the centre).</p>

<p>From your description and what it's selling for, it seems very good value for money. How's the bokeh etc.?</p>