In my zenphoto instalation, people use FTP to upload images and sometimes their do a new version of it (same file name).
My question is - if there is any way to refresh image date of such image. I don't find it admin panel or don't find any good fuction to insert into theme to do that.
I now that it's storage in DB and to get it i use getImageDate()
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Note if the new image has a new name it is not considered as "new" by Zenphoto (file system based.)
You can refresh the whole gallery or individual albums. The latter are done from the albums tabs.