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View source for Arguments for image location

%%
{{imageslider
        [page="PageName" or global=1]
        [order="time|FILENAME|size|size_desc|ext"]
        [owner="UserName"]
        [picture=1]
        [max=number]
}}
%% 
When you use the action without additional parameters, it takes the files attached to the page. To select files attached to another page, you have to use ##page="Cluster/OtherPage"##. The SQL query executes the specified arguments against the metadata in the file table. This allows you to add more arguments to filter the results, such as categories or even the filenames, by customizing the action.

The easiest way is to attach only the images you wanna use to the page or a subpage.