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Thankyou lads for your support!
Greg, yes the sigma 35mm art is a fantastic lens for astro I have found.
18mm would definitely make lighter work of the panorama, at the expense of resolution... however, if you are using it on your A7r (i believe you have), that would compensate for the shorter FL.
Graeme,yeah, I changed the focus the closer i got the tripod to keep things sharp. The Ha regions do indeed come through strongly... have to be carefull not to over do them!
Josh
Last edited by Joshua Bunn; 06-07-2016 at 12:09 AM.
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