As of now to filter images by e.g. camera model one has to use the advanced search under photograph information. It would be more convenient, to have a filter in the left toolbar for such information that is already stored in the database.

Reproducible: Always

Steps to Reproduce:
1. Enter Album with pictures made by different cameras.
2. Apply changes to pictures taken with one specific camera.


Actual Results:  
One has to use the Advanced Search.


By the proposed filter in the left sidebar this operation needs less steps and is thus a lot faster. It is in my opinion a natural extension of the current available filters.