Originally posted by LaurenOE I am not sure what you are trying to say here other then what we all already know and I commented on in my initial post....
I am asking, if you want to build a physical ND filter inside an SLR would not a better approach to look into ISO 50 or ISO 25. SLR manufacturers tend to offer ISO 25600 or ISO 51200 as a selling feature (use in low light). Why don't the same manufacturers offer ISO 25/50 for the opposite reason (bright light, slow shutter).
Is it a limitation of chips? or just not something that is needed as photographers can overcome bright light with filters, low light, not so much......