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Forum: Pentax K-1 08-11-2018, 10:05 AM  
Astro Tracer Failure?
Posted By aaacb
Replies: 21
Views: 1,062
Great to hear it worked. Here's something I've read but have not done myself: Instead of letting the camera do the darkframe subtraction for you (which is what long shutter nr does), you could take one or more shots with the lens cap on and viewfinder covered, exposed for the same time as the actual photo, and use those instead in post. It may not be as accurate as letting the camera do it right after the actual photo because the sensor may be at different temperatures, but if you're taking series for stacking, you avoid doubling the overall time.
Forum: Pentax K-1 08-11-2018, 09:05 AM  
Astro Tracer Failure?
Posted By aaacb
Replies: 21
Views: 1,062
Did you have long shutter noise reduction on by any chance? In the dark especially, I've forgotten that was happening and thought the camera was dead.
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