Methods and systems for paying with loyalty currency at a store merchant by a user using a mobile app are provided. The optical film exhibits a desired chromatic dispersion, low photoelasticity and excellent melt processability. 5 or less, at the time of pulverization and cleaning. The side collective lens is a lens with a high NA, and an aspheric lens with a small aberration. The photographing apparatus includes: an imaging unit to photograph a subject to acquire image data; an object detection unit to detect a predetermined object from the image data; and a detection condition setting unit to allow a user to arbitrarily set a detection condition for the object detection unit. In one embodiment, a method for depositing silicon-containing material film on a substrate includes flowing a nitrogen and carbon containing chemical into a deposition chamber, flowing a silicon-containing source chemical having silicon-nitrogen bonds into the processing chamber, and heating the substrate disposed in the chamber to a temperature less than about 550 degrees Celsius.