Currently there is no limit on ZIP file upload from mass upload field, only the webserver can limit this with the appropriate option.
But big ZIP file involves big memory usage since image are processed in memory too until object has been saved.
Mass upload field should implement a file size limit (defined from settings) to ensure it does not make to much memory usage without to level down webserver request limit for other ressources.
Currently there is no limit on ZIP file upload from mass upload field, only the webserver can limit this with the appropriate option.
But big ZIP file involves big memory usage since image are processed in memory too until object has been saved.
Mass upload field should implement a file size limit (defined from settings) to ensure it does not make to much memory usage without to level down webserver request limit for other ressources.