So based on the above and Simon Galley's response MGII filters are useless with modern(MGIII and IV) paper as they need a calculator but this in turn became redundant when MGIII and IV paper came along so even unused MGII filters with or without a calculator are waste bin material?
Originally Posted by Huub
This surprises me. I had never seen any statement to this effect being made before. Maybe and hopefully I have misunderstood Huub's statement and in fact MGII filters can be used but a calculator is now unnecessary as changes to the paper make it redundant?
Can anyone clear this up for me?