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Hi Alex, As I am using an inclinometer and compass for PA, my PA accuracy
varies quite a lot, so with 50mm lens anywhere from 75 secs to 150 secs,
so 200mm a quarter of those figures, so around 20 to 40 secs.
If I happen to hit on a really accurate PA, I can extend these maxima to around 180 and 50 respectively.
Thanks Leon.
raymo
Last edited by raymo; 30-01-2019 at 07:06 PM.
Reason: more text
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