My largest Thornton Pickard shutter

Ian Grant

Well-Known Member
Registered User
There's a couple of shutter blades that look like they came from one of the Unicum shutter, one's cracked or rather split the other's OK, both are completely light proof. At one time repairers made new shutter blades so that maybe an explanation or they could have faded.. There's a member of Photrio (APUG) who made his own replacement blade a year or so ago (may have been aperture rather than shutter).

Fully Panchromatic films are about 1906/7 CEK Mees of Wratteen and Wainwright (later head of Kodak Research), but there were many films with some colour sensitisation before that.