Commons:Featured picture candidates/File:Bruno Doucey par Claude Truong-Ngoc décembre 2014.jpg

File:Bruno Doucey par Claude Truong-Ngoc décembre 2014.jpg, featured edit

Voting period is over. Please don't add any new votes.Voting period ends on 19 Dec 2014 at 13:38:20 (UTC)
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I see the halo on the full-size image if I step back, or if I reduce it in software. So this is not a mediawiki thumbnail issue. -- Colin (talk) 13:00, 12 December 2014 (UTC)[reply]
I see it also at my 4K monitor. --Alchemist-hp (talk) 13:32, 12 December 2014 (UTC)[reply]
 
I see it as well, and yes it gets more pronounced if you step back or zoom out. I've downloaded the small thumbnail on the right as well as the original, loaded both in Gimp and zoomed out the original to match the thumbnail's size. There's quite a difference in sharpening which also affects the halo to some degree. Personally I think that the amount of halo visible in the original size is OK. I can understand other people disagreeing on that, but however you decide, please don't make your decision solely based on Mediawiki's current thumbnail settings. --El Grafo (talk) 13:56, 12 December 2014 (UTC)[reply]
I'm only talking about the light halo around the head btw, not about the dark vignetting effect that makes the scarf blend into the shirt at the bottom etc. That's an appropriate thing to so in order to focus on the face, imho. --El Grafo (talk) 14:01, 12 December 2014 (UTC)[reply]
All quality photo websites, including MediaWiki apply a small degree of sharpening when they downsize an image, to offset the softening effect of the algorithms and to restore pixel-level contrast which can be averaged away. If you simply downsize without sharpening, an image can look soft. See this. -- Colin (talk) 14:54, 12 December 2014 (UTC)[reply]
Yes, but very recently the way this is being done on Commons has changed. Previously, each thumbnail size was created from the original with an appropriate, small amount of sharpening. Now they use a "bucket chain", where only the largest thumbnail is created from the original. From that, the next smaller size is created, and from that the next smaller size and so on. Sharpening is done in every step so that the smaller sizes receive several rounds of sharpening. See this example ("old" mediawiki default on the left, new "bucketed" approach on the right). See also phab:T76983 or Commons:Forum#Neue_Version_der_Vorschau? (in german), where people complain about that.
All I'm saying is: Don't trust our thumbnails at the moment, there have been some drastic changes lately. --El Grafo (talk) 15:38, 12 December 2014 (UTC)[reply]
Confirmed results:
Result: 7 support, 2 oppose, 0 neutral → featured. /Yann (talk) 14:37, 19 December 2014 (UTC)[reply]
This image will be added to the FP gallery: People