I’ve been into using the features in my camera to take photos and directly post them to the internet. To do this I set up the buttons to make transferring easier. Then I made it easy to access all the buitl-in effects. I have a Sony camera so it comes with most of the Instagram effects.
While doing this I found I can use a couple settings to take better photos for paintings. I can use the High Contrast B&W filter to look for interesting high contrast shapes and composition, then take a RAW image with high vibrance to get color and detail reference.
I can then load it into Lightroom Mobile or one of the Photoshop apps to alter it real quick if I want.
I decided I wanted to use the HCB&W filter to practice composing shapes. I went to the SF MOMA to take photos.
Modern art museums are great for this.