u/Tolle2

I visited LLandudno yesterday with my pinhole camera and a recently purchased cheap yellow filter. When I developed the film every shot taken with the filter on has bulls eye rings clearly eminating out from the center of picture. I think the filter must be uncoated and has caused reflections back through the pinhole. Lesson learned, I've just ordered a Tiffen filter that is definately coated. The last 2 shots were shot without a filter in place just to highlight the problem.

I wanted to test the performance of my new GR iv monochrome in some challenging light situations whilst in Portugal recently. I am really impressed with the cameras performance giving usable images at high ISO's and little or no flare when shooting directly into the sun.