To my mind there is a vast difference between a photograph and a snapshot.
A photograph is made, the photographer has a vision for the image in mind and sets about creating it. Waiting for the right light or weather conditions and often visiting the scene several times to get it just right.
A snapshot on the other hand is taken as the opportunity arises, often with minimal thought. It is what we do on holiday, when out with family, it aids us in remembering those moments long past.
Having said that, many snapshots are perfect, just like the postcard, whilst some photographs, despite the time and effort, look like a hurried snapshot.
I take mainly snapshots, but occasionally, I get a beautiful photograph.
Colour Filters were once all the rage. Back in the dark ages of Black and White film colour filters could greatly improve an image. If you look at many B & W images there is no sky, just a great whiteness, however add a yellow filter on a cloudy day and you see some definition, add an orange and it becomes more dramatic, add a red and you get this.
Red Filter on Black and White.
However, add the same filter to Colour Film and you get this.