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Hi
Art,
When shooting something with mostly blue reflection nebulosity like
M45, it's my first choice. It's also good when shooting red and blue
together like M8/M20, especially if the red stuff is bright. For fainter
emission nebulosity, E200 is a much better choice. I have often shot the
same target with both 400F and E200, then composited the two images to get the
best of both responses.
Some
Provia 400F samples:
Jon Kolb
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