Commons:Featured picture candidates/File:Balmoral Castle panorama 20211026.jpg

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File:Balmoral Castle panorama 20211026.jpg, featured[edit]

Voting period is over. Please don't add any new votes.Voting period ends on 15 Jan 2022 at 09:05:25 (UTC)
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Rainbow over Balmoral Castle, Scotland
✓ Done Good point. The full panorama spans 145 degrees horizontally, so I was under the impression that a rectlinear projection would not look very well; but I've now played around a bit with it and the relative positioning of the castle, and think the new version is definitely better. Thanks for the other feedback as well! I'm aware of the relation of f-values on my sensor, but thought that usually f/11 or higher is used on fullframe for landscapes (and was usually satisfied with f/8 for my camera, without noticing too much diffraction) -- I'll keep that in mind and try out changes in the future. Is there anything specifically you suggest I could do in post processing about the artefacts you see? --Domob (talk) 16:02, 6 January 2022 (UTC)[reply]
 Comment In the first version, the roof line of the main building was falling off towards the left, which made sense given the perspective. In the second version it is falling off towards the center of the image, which does not make any sense to me at all. Maybe just aim for it to be horizontal? --El Grafo (talk) 16:33, 6 January 2022 (UTC)[reply]
 Comment That's an interesting observation, and it does indeed look a bit weird. I've aimed for the verticals to be correct, rather than horizontal lines in the perspective. I tried playing around with the roof as well, but wasn't able to produce anything that looked more realistic or better. After checking back on the map, I actually think that this view is the correct perspective, and the castle is sloping away from the viewer towards the centre in reality. --Domob (talk) 17:55, 6 January 2022 (UTC)[reply]
  • I agree with @El Grafo and, that's an easy fix. In Hugin, you go to preview, and then "move/Drag" and move it until you are satisfied with the roof line. You can hold Ctrl or Shift (forgot) to drag along a single axis (so you will keep ur verticals). Another way is to set horizontal guidelines, but that would force you to redo your panorama from scratch AFAIK. - Benh (talk) 18:05, 6 January 2022 (UTC)[reply]
 Comment I tried that (including setting horizontal control points). The effect is that the forest on the right is extremely distorted. If you check on the map (e.g. OpenStreetMap), you will see that the castle is actually for real moving backwards in relation to the line of the forest on the right, so with a composition like the one in the picture (viewing towards the centre between castle and forest) it is expected that the perspective is as it is. --Domob (talk) 18:13, 6 January 2022 (UTC)[reply]
  • The difference between those two pictures is the direction in which the camera is pointing (or the "virtual" direction based on the panorama projection). In the picture you linked, the direction is more orthogonal to the building, while in the panorama it has some angle (the building is sloping away from the viewer towards the centre), which leads to this perspective. I can totally see how it looks "weird", though (but as far as I can tell, it is natural in this case). --Domob (talk) 10:01, 11 January 2022 (UTC)[reply]
@Benh: At approximately 3,000 px high (12 MP), I don't think f/16 FF has any noticeable impact on IQ. It's only on high-resolution sensors that diffraction starts to kick in at the pixel level. The blur on the edges looks like lens imperfections, but since it's already stopped down to f/8 I think this is just the best the lens is capable of producing. -- King of ♥ ♦ ♣ ♠ 18:36, 6 January 2022 (UTC)[reply]
  • @King of Hearts, you are right, it's probably not very noticeable, but I'm fairly sure the sweet spot is at around f/4 (the sweet spot is often around f/8 in FF equiv.). So might as well use it here where DOF is not really an issue. That was more a general advice, because I see there's a lot of confusion of these equivalences between camera formats. I updated my comment. I wasn't talking about the blur on the edges but more about the weird chroma speckles along the edges (excuse my english). Maybe it's the demosaicing or just that Domob was light on chroma NR. anyways, who cares? It's more than good enough qualitywise. - Benh (talk) 20:26, 6 January 2022 (UTC)[reply]
✓ Done Agreed. I've added a bit more grass on the bottom now. --Domob (talk) 12:43, 7 January 2022 (UTC)[reply]
 Comment Thank you very much! --Aristeas (talk) 13:10, 7 January 2022 (UTC)[reply]
 Comment I would say, thanks to all of you in the commons community for helping me improve the picture :) --Domob (talk) 14:36, 7 January 2022 (UTC)[reply]
Confirmed results:
Result: 16 support, 1 oppose, 2 neutral → featured. /--A.Savin 19:36, 15 January 2022 (UTC)[reply]
This image will be added to the FP gallery: Places/Architecture/Castles_and_fortifications#United_Kingdom
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