It's still inconvenient, because the Photo viewer doesn't remember this filter. When you open it next time, it will again be showing "all images" and with 1000+ photos it makes the whole app so slow it's almost unusable while it's trying to generate thumbnails for them all. There are definitely some (logical, ui) problems with the photo viewer.

I would propose making "Camera" folder the default folder - or the last folder that was "filtered".