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Thanks guys, I usually write my ISO sorry 1600. I struggle with greater than 90 seconds due to the following -
1. Fork mount which is 85% drift aligned, once I manufacture my peer it will be much better.
2. Extremely light effected area.
I am at present doing some finer drift alignment and will try for some 4 minutes exposures.
Philip I always thought 2 minutes and ISO800 was the same as 1 minute at ISO1600. Does reducing ISO and increasing time actually gather more data??
Carl
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