|Message from Dick Osseman
All pictures were taken by me and I do claim copyright for them (except for some of scanned publications in which pictures of mine appear, see my Me in print gallery) (clicking the "my Me in print" part before will take you there). As for that copyright being violated: I am only partly worried. I would not like it if other people got rich using my pictures, without my getting a share. So far no one got rich there, so this is a moot point.
Possible use and what to do
Commercial use: This may be: use for books, commercial sites, television, articles, in short: any. Always send me an e-mail (firstname.lastname@example.org) and tell me about your intentions, never use the picture without my knowing so. I may hand the right over for free, I may ask for a fee. On that you should mail me and we'll work something out. I can often supply better high-resolution copies, though I do not like the recent craze for "high resolution" meaning I am expected to send a 16 MB file for a 1 by 2 inch picture. My formats are: 5 to 6 Mp camera's for the early digital years, later 12 Mp and 16 Mp, most recently a 45 Mp Nikon D850. Slides I No longer have, but I scanned them again in 2018 in hi-res, and have not edited them all. And when requesting on one or more pictures, please do not use references like "that nice picture of ornaments on a medrese in Sivas", but send me the link to the single shot when in view, for example: https://pbase.com/dosseman/image/35088644 . Do this even when you refer to many pictures, it may be repetitive to you, but I have to locate pictures in a huge archive, and without such quick reference I'm lost.
Private use: If you want to keep my pictures just for yourself, or to show to a few friends: feel free to download them (right click on the picture and use a "save" option). Best quality is obtained in the "original" view you can see under a picture. You may wish to inform me you liked the pictures and mail me, but the sheer fact that you download them does not bother me.
I consider using the occasional picture in a blog private use, so I do not need to be informed. But there I would appreciate it if I'm mentioned as the copyright owner.
Professional use: by this I mean: using pictures in presentations, a thesis, a course. I like to at least have my name (as Dick Osseman) and if possible a link to my site shown. That is: if possible. In some presentations it would be silly, in a thesis it can easily be arranged. I like to be informed but it is not a must.
Semi-professional: Some people request permission to use pictures on a website they created and often run as a hobby. I would like to treat that as "professional", and thus be informed. However: if it is for just a few pictures, I do not need to be bothered. I think it is up to your conscience. Again: indicate me as the owner of the copyright.
I put pictures in Wikimedia Commons (https://commons.wikimedia.org/w/index.php?title=Special:ListFiles/Dosseman&ilshowall=1) . Some of those are not on my sites.