Commons:Graphics village pump/March 2020

Advice on quality of two versions of same image

Hi. I've been working on some maintenance tasks and come across File:Force H off Gibraltar Rowland Lang hc1582 large.jpg. It has two versions, the first version, uploaded in 2013, has a slightly blurry quality, due to it being a painting. The second version looks like it has had some sort of sharpness filter applied but on my screen there are a lot of residual artifacts in the image. Is anyone else getting that or is it just my screen?
I'm tempted to revert to the original but the file is used on 5 different projects. Is there a way to split the upload history and move one of the versions to a separate file? That way projects can decide which version they prefer. From Hill To Shore (talk) 01:53, 8 February 2020 (UTC)

• Upload history really doesn't matter because no copyrights are involved. You can just download & upload one of the versions under a different name, and cross-link them with {{Other}}. - Jmabel ! talk 00:40, 3 March 2020 (UTC)

If you insist on splitting go to COM:HMS, current requests (note, that this is actually an own subpage). This said, also the first version has compression artifacts, but these are not that obvious. BTW in the source the image has (for me) a resolution of 1200x586 pixels, so it is even larger than the first uploaded version – it also has these artifacts, though. You should wait with uploading this for a split. — Speravir – 01:14, 3 March 2020 (UTC)

One important thing: I am not sure that the given license is correct. On the sourse I read “© the copyright holder. Photo credit: National Maritime Museum”. I do not see that the painting is a work of the UK government. The painter died in 1956, hence this had to be deleted now (perhaps after splitting) and undeleted in 2027. — Speravir – 01:21, 3 March 2020 (UTC)

Thanks for the advice but it is Crown Copyright as it was created by an official UK government (Royal Navy) artist during World War II. Crown Copyright in the UK expires 50 years after creation/publication, so this file became PD by 1993. Work by the same artist before or after WW II won't become PD until 2027. The explanation and date of creation can be made clearer on the file page.

How do I handle the compression issues without damaging the image quality? From Hill To Shore (talk) 06:01, 3 March 2020 (UTC)

Thanks for clarification. The artifacts are already present on source, so you cannot do anything. It would need a new photograph, or if there is an original raw file (or TIFF or PNG), a less compressed JPEG created from this. — Speravir – 17:50, 3 March 2020 (UTC)

Urgent help needed at w:2019–20 coronavirus pandemic

 You are invited to join the discussion at w:Talk:2019–20_coronavirus_pandemic#Developing_an_SVG_version. Sdkb (talk) 03:44, 17 March 2020 (UTC)

Render issue

Why is File:COVID-19 outbreak France per capita cases map.svg not rendering correctly? Ythlev (talk) 13:05, 20 March 2020 (UTC)