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Old Dec 14, 2009, 10:01 PM   #1
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Default Night Panorama

A while ago I acquired a FA31Ltd that I have been trying to use for multiple frame panoramas stitched together. Initially, I got carried away with the speed of the lens and my DoF paid the price (along with a soft focus) - and I was not happy with the results.

So, I finally had some additional time this evening and was able to get some shots. I really missed last night's absolutely specular sunset, so I made due with this evenings. The result is the sharp images I was expecting - however, I did forget to reset the camera to ISO 100 and left it in automatic, so these are at ISO 400. The pano is 9 frames across or 16K by 4.5K, f5.6. f5.6 is the sweet spot for the 31, along with minimum vignetting and CA.

As a comparison I took a shot with the 10-17FE at 10mm, f8 a bit too late to get the sky color I was after, but you can see that each of them are 180 degrees wide.

I also used a different stitcher that did a wonderful job in blending the sky across the stitched frames. Did much better than Autostitch.

Also, there is about 10 to 15 minutes between the two shots, so I lost the really blue iridescent sky that I was after...

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Last edited by interested_observer; Dec 14, 2009 at 10:07 PM.
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Old Dec 14, 2009, 10:03 PM   #2
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... and here is the same shot with the 10-17... They are both 1000 pixels wide, so they should line up pretty well.
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Old Dec 14, 2009, 10:40 PM   #3
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As I was looking at these, the image from the 10-17 had a better composure primary due to the foreground. This is all about the focal length and the amount of height you're able to draw in. So I went back to the archieves, and had an image taken a couple of weeks ago with the 12-24 at 24. Slightly better, but I am finding that if you do not have the head on the tripod level, as you pan around, you get a spherical effect and thus not a level horizon. So I have some additional thinking to do on that aspect.
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Old Dec 15, 2009, 8:44 AM   #4
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You may have lost the blue in the sky, but it looks like some stars are showing in the second one.
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Old Dec 15, 2009, 3:34 PM   #5
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Very different moods, but all beautiful, and beautifully captured. The sky in the first one is amazing!
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Old Dec 16, 2009, 10:27 PM   #6
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Very nice.
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Old Dec 19, 2009, 6:51 PM   #7
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They came out nicely. I never manage to get this right when I try it.

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Old Dec 20, 2009, 8:34 PM   #8
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It would be fun to try a similar panorama in HDR, even in-camera using the K7.
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Old Dec 21, 2009, 7:49 AM   #9
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Morning gfmucci, There are several problems with trying to use HDR in this particular setting. Applying HDR here would not necessary bring out the sky any better - my principal aim - as I was really trying to silhouette the hills with the lights in the valley.

What I think HDR would actually do, would try to gather sufficient light to illuminate the foreground - exactly what I am not trying to do. Also, this is taking and stitching 8 images together, and it takes about a minute (2 to 10 seconds per frame + 2 second mirror up + repositioning time), and in that time the ability to get a consistent set of light across all the frames is lost.
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Old Dec 21, 2009, 6:46 PM   #10
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Hey IO,
I know I posted a reply to this thread the same day you posted it but... I must have forgotten to hit the submit button!
Well anyway, I like them. especially the first one. Well done.
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