what does "Image sourced from public domain" check box mean?

[MarkofShell]

Hello,

for last 30 minutes I've been trying to find an answer but I could not find including in instruction manual pdf.

could anyone explain what does this mean exactly please

[zxzoomy]

The way I understand it an example would be the cover of an antique theatre programme, poster or advertisement which is now out of copyright but other copies are in the public domain. eg. owned by others, in libraries etc. 

[geogphotos]

Images where copyright has expired or never existed.

 

NASA images are largely public domain, along with many others taken by US government photographers.

 

Quite a few major museums and art galleries release images into the public domain. Whether they are happy for Alamy to be licensing them is another question.

 

Another source is some types of Creative Commons licences.

 

There are some huge public domain collections on Alamy. I have a smallish number myself.