Two sides of the argument and both are equally valid.
The key issue is the coating on the lens rather than the technology of the film. AST @tinakino said, try with and without. Personally, if I’m using old lenses I tend to do so without filters because I like how they perform, flaws and all. I confess I do use UV filters for protection on expensive modern digital lenses, even though I know I really don’t need to.
For film, I do use square filter holders for landscape when I need ND grad to retain detail in the sky as well as exposing properly for the foreground. Especially if shooting slide film. Because I have them for that, I also have some strong ND filters for long exposure shots on film and digital. Not Cokin though, I use Formatt Hitech
For me it's all photoshop but I do have a lot of respect for people who go through the trouble of shooting fucking slides properly with appropriate colour / grad filters 👍
On digital, I rarely bother with ND grads now - the dynamic range of most sensor is so good you can just expose for the sky and pull up the shadows in post- processing. Only use polariser, IR filter (for B&W IR pics) and 6-stop ND for long exposures.
Two sides of the argument and both are equally valid.
The key issue is the coating on the lens rather than the technology of the film. AST @tinakino said, try with and without. Personally, if I’m using old lenses I tend to do so without filters because I like how they perform, flaws and all. I confess I do use UV filters for protection on expensive modern digital lenses, even though I know I really don’t need to.
For film, I do use square filter holders for landscape when I need ND grad to retain detail in the sky as well as exposing properly for the foreground. Especially if shooting slide film. Because I have them for that, I also have some strong ND filters for long exposure shots on film and digital. Not Cokin though, I use Formatt Hitech