Indeed the Celestron has odd focusing. However there is no way I could hand
hold a 750mm lens and get anything but blur. The knob sticking out of the
back of the lens is pretty easy to use but pretty much forces you to use a
tripod.
The lenses also seem to be prone to picking up a haze on the front element.
I haven't tried cleaning mine yet but it looks like it should be relatively
easy (famous last words).
-jeff
----- Original Message -----
From: "Luca A." <lucaarnu@xxxxxx>
Subject: [OM] Re: Tamron 500mm f:/8,0
>
> I'm afarid that the Celestron has an odd focusing mechanism. Is it a
> normal
> ring or something different?
>
> Luca
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