EXCERPT page containing first few paragraphs. 2023-10-01 20:52:33
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Astrophotography: 30 seconds at ISO 100 at f/2.8, 5 stop push
This real-world example looks at what one can expect at ISO 100 for a long exposure for astrophotography.
The resulting was dark enough to require a 5 stop push, which is the equivalent of ISO 3200. The main issue with medium format cameras for astrophotography is the lack of fast lenses. The f/2.8 of the Fujifilm GF 63mm f/2.8 was the fastest lens available as of this writing, and yet a 30 second exposure still required a 5 stop push for a fairly bright star field.
Star field, 30 seconds
Adobe Camera Raw 9.9.0.718. 5 stop push. Camera Profile = Camera Pro Neg Hi
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GFX 50S + Fujifilm GF 63mm f/2.8 R WR @ 51.8mm equiv (63mm)
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