| Joined: | Mon Apr 2nd, 2012 |
| Location: | South Lakeland, UK |
| Posts: | 4066 |
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I will have a play with the source images, I think I have 44, 20 second exposures, it may be I would get sufficient intensification from fewer images, say 10? I think I used 20 for the above image and it's rather overdone it. I am probably trying harder than I need to and turning everything up to max and spoiling it a bit on the way.
What I am really pleased about is the firm boundaries of the star shapes, just slightly oval, or slightly elongated circles from the 20 second exposure.
I want to experiment with lower ISO, shorter exposure and stacking my own images in Ps. I am relieved the 16mm fisheye holds up with a 36Mp sensor.
Many of the fainter stars in the Milky Way are only visible screen at 100% zoom and picking them out from noise is tricky, I am thinking there isn't too much noise even at 3,200 ISO and zero banding, even after at least an hour and a half of 20 and 30 second exposures. The last 30 second exposure was as clean as the first 20 second exposure.
I am with you on the wider framing for birds, I might be persuaded to try a 1.4X converter on my old 300mm f/2.8 for closer birds. The magnification will be less so noise is less of an issue. Win - win.
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Robert.