Hi Tom, I know the re-sampling problem you mean but this is not the issue and I cannot fault APODs jpeg processing, looking back through you will find lots of very
sharp images.
The concept behind your image is excellent; its a fantastic scene, and obviously a superb location to photograph the night sky
The problem is one partially of post-processing, but also I suspect the original photography as well, please let me explain:
Look at
this APOD in comparisson with your picture - the difference is quite remarkable.
Bobak's image looks wonderfully natural, its in the middle of the night and you can see that; though the milky way is awesomely bright and the foreground is clear and well visible.
Now if you look back at your image the difference is easily apparent, firstly your night sky looks over-saturated and overdone on the 'levels' type tools, the stars do also look blurry here and this might be a resizing problem but I'd have to see the original raw images to know, I suspect its actually an effect of the stars trailing. Secondly the foreground kilns leap out having the appearance of being overlaid; that is the reason I thought it was a 2 layer image at first, but it kind of is; you have pointed out that you masked the foreground to apply different treatments to it and this explains the unnatural effect which 'troubles' the mind, and again judging by the left most white patch you have used a LOT of extra brightening?
With 75 second shots you have significant trails, I'd either go for a long trail; or no trail. Also, even with a modern digital camera ISO 3200 sounds like a big compromise on quality?! I'd say you have over-exposed the original images? The brightest part of the Milky Way (Sag star cloud?) for example is actually blown out; clipped, if you look at Bobak's image it has plenty detail to that cloud. Myself I'd probably try 30 sec images at ISO 800 or something, and I bet Bobak's exposures were something like that? Then if you think the kilns are not showing up enough, perhaps silhouetted, remember that most foregrounds in images like this are illuminated by something; camp fires, flashlights, car headlights etc, sometimes natural or sometimes deliberately by the photographer, but ultimately not with Photoshop masking!
Would you not agree that you could do these exposures again and do it better? Or do you think you have the perfect image?
Whatever you think now; my bet is in a few years time you will look back on this image and realise that these points are indeed worthy of consideration.
I don't wish to present myself like a "know it all"! But I have some experience, and courage in my convictions...
Keep up the good work...
Chris
Some wonderful APODs working on the same technique:
1 /
2 /
3 /
4 /
5
Hi Tom, I know the re-sampling problem you mean but this is not the issue and I cannot fault APODs jpeg processing, looking back through you will find lots of very [url=http://apod.nasa.gov/apod/ap110716.html]sharp[/url] images.
The concept behind your image is excellent; its a fantastic scene, and obviously a superb location to photograph the night sky :D
The problem is one partially of post-processing, but also I suspect the original photography as well, please let me explain:
Look at [url=http://apod.nasa.gov/apod/ap110527.html]this[/url] APOD in comparisson with your picture - the difference is quite remarkable.
Bobak's image looks wonderfully natural, its in the middle of the night and you can see that; though the milky way is awesomely bright and the foreground is clear and well visible.
Now if you look back at your image the difference is easily apparent, firstly your night sky looks over-saturated and overdone on the 'levels' type tools, the stars do also look blurry here and this might be a resizing problem but I'd have to see the original raw images to know, I suspect its actually an effect of the stars trailing. Secondly the foreground kilns leap out having the appearance of being overlaid; that is the reason I thought it was a 2 layer image at first, but it kind of is; you have pointed out that you masked the foreground to apply different treatments to it and this explains the unnatural effect which 'troubles' the mind, and again judging by the left most white patch you have used a LOT of extra brightening?
With 75 second shots you have significant trails, I'd either go for a long trail; or no trail. Also, even with a modern digital camera ISO 3200 sounds like a big compromise on quality?! I'd say you have over-exposed the original images? The brightest part of the Milky Way (Sag star cloud?) for example is actually blown out; clipped, if you look at Bobak's image it has plenty detail to that cloud. Myself I'd probably try 30 sec images at ISO 800 or something, and I bet Bobak's exposures were something like that? Then if you think the kilns are not showing up enough, perhaps silhouetted, remember that most foregrounds in images like this are illuminated by something; camp fires, flashlights, car headlights etc, sometimes natural or sometimes deliberately by the photographer, but ultimately not with Photoshop masking!
Would you not agree that you could do these exposures again and do it better? Or do you think you have the perfect image?
Whatever you think now; my bet is in a few years time you will look back on this image and realise that these points are indeed worthy of consideration.
I don't wish to present myself like a "know it all"! But I have some experience, and courage in my convictions...
Keep up the good work...
Chris
Some wonderful APODs working on the same technique: [url=http://apod.nasa.gov/apod/ap110524.html]1[/url] / [url=http://apod.nasa.gov/apod/ap110509.html]2[/url] / [url=http://apod.nasa.gov/apod/ap110405.html]3[/url] / [url=http://apod.nasa.gov/apod/ap110221.html]4[/url] / [url=http://apod.nasa.gov/apod/ap090818.html]5[/url]