Commons:Featured picture candidates/File:Tower Bridge from London City Hall 2015.jpg

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File:Tower Bridge from London City Hall 2015.jpg, featured[edit]

Voting period is over. Please don't add any new votes.Voting period ends on 19 Apr 2016 at 21:33:29 (UTC)
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SHORT DESCRIPTION
The clouds are nice but a real pain getting a good stitch since the lighting changes rapidly. So I had some extra sweeps back and forward that I took but didn't end up using due to the change in light levels. -- Colin (talk) 10:52, 11 April 2016 (UTC)[reply]
  • That's all on the image description page. Sony A77 II camera. Sony 50mm f/1.8 lens. Stitched from 29 images. This is a 3 row stitched mosaic using a Nodal Ninja 3II panoramic head. It was stitched with PtGui and then Photoshop used to hand-select parts of some frames (a) so that a coach didn't obscure important parts of the bridge and (b) to ensure even lighting on one building (otherwise PtGui chose a frame in shadow and a frame in sun). The resulting image was cropped to create a 16:9 format. -- Colin (talk) 05:50, 11 April 2016 (UTC)[reply]
Thanks. I use the 90% setting, which is actually the second-highest after 100% -- there's nothing in between. See this old article. I don't see any image penalty to 90% (even looking with a magnifying glass) and there's a big saving in filesize. Noise reduction / sharpening can also impact filesize if there's a noisy sky (there's no point sharpening clouds or blue sky -- it just creates noise). The number of frames doesn't correlate well to final image size since sometimes a lot of overlap is useful and sometimes you end up cropping out a lot of the generated image. Here, since it's a once-per-year opportunity (and great weather), I wanted to be extra sure. Plus I suspected I'd need to fix up stitching issues with the road/people traffic and this requires repeated overlap so you get several duplicates that one can pick and choose from. As it turned out, Smartblend did a really good job and I didn't end up with any half vehicles or obvious twins, and it was just a personal choice to remove a coach that hid part of the tower arch.
I'm surprised nobody has complained about the Tower Hotel, which is really ugly and spoils things a bit. -- Colin (talk) 10:52, 11 April 2016 (UTC)[reply]
Confirmed results:
Result: 30 support, 0 oppose, 0 neutral → featured. /--Mile (talk) 06:40, 17 April 2016 (UTC)[reply]
This image will be added to the FP gallery: Places/Architecture/Bridges