Commons:Featured picture candidates/File:Ship wreck Carnatic 2017-04-22 Egypt-7947.jpg

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File:Ship wreck Carnatic 2017-04-22 Egypt-7947.jpg, featured[edit]

Voting period is over. Please don't add any new votes.Voting period ends on 24 Dec 2019 at 11:45:55 (UTC)
Visit the nomination page to add or modify image notes.

SHORT DESCRIPTION
  • What you are reading as "dust spots" is simply lots of small stuff that is always floating around under water. Some get in focus and some get out of focus and they do resemble normal dust spots. You may have been a bit spolied by my marine photos, taken in clean nature reserves and also with the debris cleaned up by me. A more normal underwater "soup" usually looks like this. --Cart (talk) 15:18, 15 December 2019 (UTC)[reply]
  • I'm curious, how do you know it's a dust spot and not some small specks of debris clinging to the outside of the lens shielding? In this case, with all the debris in the water, I think it's ridiculous to dump a great photo because of perceived "dust spots". --Cart (talk) 16:18, 15 December 2019 (UTC)[reply]
  • Charles, this image, like a lot of underwater photos is taken with a fisheye lens (Peleng 8mm f/3.5). The aperture is unrecorded (lens has no contacts) but at most apertures the DoF on a fisheye is somewhat infinite and will record motes of dust/debris with hard edges. You are more used to telephoto lenses with shallow DoF. I can only find one other picture that seemed to have been taken on the same dive (this) and hard to tell, but I don't see dust spots on that. Whether folk might want them removed for aesthetic reasons is one matter, but it is not straightforward to assume their origin. -- Colin (talk) 08:43, 16 December 2019 (UTC)[reply]
  •  Support - If those are dust spots, they should be removed, but Cart's explanations seem clearly plausible to me - I have no expertise on this, she does, and her remarks ring true. As for the "chromatic aberration", I think that's simply a function of the water functioning like a prism when the light streams through it at a particular angle. And the image is certainly compelling, as others have stated. -- Ikan Kekek (talk) 07:50, 17 December 2019 (UTC)[reply]
Ikan Kekek, not trying to change your support vote, but I think the purple CA is just bog standard lens-caused CA, which shows up on high-contrast ends towards the edge of the frame. I have a fisheye lens and CA can be a problem in the corners, and my Samyang is a better lens than this Peleng. -- Colin (talk) 21:36, 17 December 2019 (UTC)[reply]
If it is, it should be corrected. W.Strickling, would you like to comment on this or the possible dust spots? -- Ikan Kekek (talk) 22:07, 17 December 2019 (UTC)[reply]
Confirmed results:
Result: 10 support, 2 oppose, 1 neutral → featured. /--Ikan Kekek (talk) 09:07, 25 December 2019 (UTC)[reply]
This image will be added to the FP gallery: Objects/Vehicles/Water transport#Shipwrecks
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