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Thanks Greg/Rick
Once, I bought a lens that was supposed to have been the bees knees for astro, pinpoint stars wideopen and all that, and it was dire.
I really want to try out the Sigma Art lens at some point.
Rick - well, I like to be 'multi-disciplined' in astro hence why I have bought gear to cover all bases and I certainly had to put that Canon 5D MKIII/20-70mm pro lens (competition prize) to goid use. I did just sell my Solarmax though.
Thanks again!
Cheers
Martin
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