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Tracking also helps with group viewing since you don't have to constantly re-centre the object. Of course it does depend on how low a power you are using and what objects you are looking at but moderate power upward benefit from tracking.
That's what I was thinking about. If it were just me I wouldn't bother with tracking at the moment. But I have a large family and a number of friends who I want to share the experience with and I thought tracking would assist that.
It's a lot extra money just for the convenience though, so I'll have to way it up. Thanks for your help.
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