The American annual of photography . PORTRAIT. Rudolf Eickenmeyer. etc., using plates differing in their sensitiveness. Althoughthe amount of solution required may seem large, in reality itproves economical, as the developer (mentioned below) willkeep in good condition in the tank for several weeks (an in-verted tray being used as a cover), and in that time a greatmany plates may be developed, say, from two to four dozenper day for two or three weeks. Each plate absorbs a certamamount of the developer and this naturally lowers the level ofthe liquid. Water may be added to increase the bujk, th
The American annual of photography . PORTRAIT. Rudolf Eickenmeyer. etc., using plates differing in their sensitiveness. Althoughthe amount of solution required may seem large, in reality itproves economical, as the developer (mentioned below) willkeep in good condition in the tank for several weeks (an in-verted tray being used as a cover), and in that time a greatmany plates may be developed, say, from two to four dozenper day for two or three weeks. Each plate absorbs a certamamount of the developer and this naturally lowers the level ofthe liquid. Water may be added to increase the bujk, the onlydifference behig that the time of development is somewhatlengthened. The following formula will be found most usefulas to keeping qualities and application: English. Metric. 80 ozs. Water 2500 I oz. 6 drams Sodium Carbonate gms. 1 oz. 5 drams Sodium Sulphite gms. 2 drams Hydrochinone gms. 2 scruples Metol gms. 5 grains Potassium bromide 0-325 gm. The sodas and bromide should be dissolved first, then
Size: 1347px × 1855px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorktennantandw
