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morkel i like this a lot reminds me of some thing out of a scfi movie your nikon really gets a work out with the iso
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Hi Morkel,
Very impressive for 20 seconds at f/4. Really nice. It sure shows the center bulge of the galaxy. Nice to see the scene stretching all the way to the Coalsack on the right (I so rarely get to see it these days--maybe my next trip to the Serengeti). I would tray and make a gradient to the lower left corner and use it to subtract out the red skyglow from the light pollution. Maybe a simple feathered selection of the corner, then use the levels tool on the red channel and bring the left slider up -- that is a subtraction. The challenge will be getting the feathering right.
Roger
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hey Morks , nice colours and tones.looks a little to 'ruff" and some noise is evident.may just be the compression on resize . Also try some LCE here, it will help with 'pop factor" IMHO
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Morkel - really impressive especially with the settings. I like how you've framed it and have the bulk of the milky way running corner to corner.
TFS,
Rachel
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Originally Posted by
Andrew Aveley
Yeah but.........

lol , quite like the colours in the original. I think that with lower ISO here your IQ would have been a lot better and more appealing. Sacrifice of DR is something that I personally think with these nocturnal shots for IQ is my take on the end result . That is of course because i don't get that high with my ISO

but yeah , cool idea and i am sure that doing this out in the middle of nowhere would let the milky-way explode in the frame. Maybe when you venture south we can argue this over a 'coldone' under the Karoo skys
A couple of notes.
ISO does not change sensitivity. For example, 20 seconds at f/4 and ISO 3200 captures the same number of photons as 20 seconds at f/4 and ISO 12,800. But you are correct that the lower ISO will have more dynamic range (in fact 2 stops more at ISO 3200 versus 12800). As long as the camera does not have banding issues (the Nikons are very good in this regard), exposing at ISO 1600 or 3200 and lifting in post processing can make for more dynamic range and better star colors. All Canon cameras I have studied have banding issues and I would not use them for night time star images at less than about ISO 1600. I use my 5DII at ISO 3200. The 1DIV has very low banding compared to other Canon cameras (but not as low as cameras like the Nikon D800) and I use the 1DIV at ISO 1600 for night imaging. This (ISO) is only for dynamic range as the amount of light captured is only a function of exposure time and lens aperture.
The other method to improve signal-to-noise is to take multiple exposures, align them and stack them. So Morkel, if you have several exposures at the same f/stop, try adding them together (after aligning).
Roger
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I would say excellent for such high ISO, I would have used ISO 3200 though, better performance and less noise. Still great shot Morkel, love it.
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Whatever the settings were, the milky way sky scenes are always just spectacular. We are so small when compared to the universe. i love the night sky, your image makes me envious. We just do not get enough dark sky here in my part of Maine to do it justice. Thanks for sharing this nice image.
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Morkel...not much for reposts but I'm fascinated with these types of images. I thought I would give that light pollution in your first post a quick try. I spent about 2 minutes on it, enough to be pretty sure with some time it could be completely eliminated.
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Hi Morkel, an interesting read for a lovely capture. I'll have to try some of these night time images when my D800 arrives.
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Colin.
I like your repost. Nice job eliminated most of the light pollution.
Roger
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Thanks Roger, a quick attempt, definitely more could be done.