The photographer mentioned (http://www.joaquinparedes.com/) has wetplate portraits, figure studies, etc which are not particularly sharp. If this is...
In Linhof Advertising of the day Schneider Symmars were touted as being totally usuable wide open. Back then sheet Kodachrome and E3 Ektachrome were...
P., the reason modern lenses that open to f/5.6 are usually recommended for use at around f/22 is that they gain coverage when stopped down from wide...
The ledger show what appears to be the completion date of each lens. So we know 1559 (the serial number at which the ledger starts) was completed on...