Cameras shown have already set correct camera

[PiotrGackowski]

I got
https://commons.wikimedia.org/wiki/File:Canon_EOS_M50_black_06.jpg
But inside there is already information about "Canon EOS M50".

I remember that I got such situation couple times, but I closed browser. But I am really afraid that I am marking images that have already correct info.

[PiotrGackowski]

https://commons.wikimedia.org/wiki/File:Canon_EOS_M50_black_07.jpg

[waldyrious]

I didn't understand this issue at first, but I bumped into the same problem, which clarified it: some edits I made with wikicrowd were reverted on Commons because the image already had a "depicts" statement with a Wikidata item that's a subclass/instance of camera.

For example, the file File:Samsung NX2000 (White) top.jpg was shown to me in Wikicrowd and I clicked yes, which added a "depicts: camera" statement to it, but it already had a "depicts: Samsung NX2000" statement.

[addshore]

So the question will not be generated, and also edit will not happen if the file in question has a depicts statement for any item in this list
https://query.wikidata.org/#SELECT%20DISTINCT%20%3Fi%20WHERE%7B%3Fi%20wdt%3AP31%2Fwdt%3AP279%2a%7Cwdt%3AP279%2Fwdt%3AP279%2a%20wd%3AQ15328%20%7D
or this list https://query.wikidata.org/#SELECT%20DISTINCT%20%3Fi%20WHERE%7Bwd%3AQ15328%20wdt%3AP279%2B%20%3Fi%20%7D
Basically looking for trees of items in the class tree from Q15328 as defined in https://github.com/addshore/wikicrowd/blob/main/spec/depicts/misc/camera.yaml#L1

This comes from this code https://github.com/addshore/wikicrowd/blob/main/app/Jobs/GenerateDepictsQuestions.php#L212-L238
trying to cover instancesOfAndSubclassesOf the top level item, and also parentInstancesOfAndSubclassesOf.

The model in question must not meet these criteria
https://www.wikidata.org/wiki/Q51539860
Going up the trees

• instance of digital camera model (Q20741022)
  • subclass of camera model (Q20888659)
• subclass of mirrorless interchangeable-lens camera (Q209918)
  • subclass of digital camera (Q62927)
    • subclass of camera (Q15328)

So going all the way up the subclass tree we can get to camera (Q15328)

So something is not right :)

[PiotrGackowski]

Still present, still problematic
https://commons.wikimedia.org/w/index.php?title=File:Samsung_NX2000_(White)_side.jpg&oldid=prev&diff=661035326

https://www.wikidata.org/wiki/Q18354117
it have "digital camera model"

[addshore]

So taking another look

• https://www.wikidata.org/wiki/Q18354117 Samsung NX2000 is instance of digital camera model
• which is subclass of camera model

And this is the top of the tree.
So the tool has no way of knowing that Q18354117 is a camera.

I believe this differs from Q51539860 I looked at above in #55 (comment) as that was also subclass of mirrorless interchangeable-lens camera (Q209918)

TLDR, the modelling on Wikidata or commons needs to change.
The current statement on https://commons.wikimedia.org/wiki/File:Samsung_NX2000_(White)_side.jpg does not say that the image depicts a camera, rather a model of camera, and a model of camera doesnt claim to be instance of camera.

Looking at the modeling of a 5D https://www.wikidata.org/wiki/Q64955

So the model should have a subclass of statement
So I went ahead and added it https://www.wikidata.org/w/index.php?title=Q18354117&diff=1653383331&oldid=1620502022

It shouldnt appear in questions anymore, as:

• mirrorless interchangeable-lens camera
• subclass of digital camera
• subclass of camera