Fuji in 1986 published a one page leaflet stock # AB706, Ref. no. AB-706E(SK.88.09.SA.MW) introducing Neopan 400 film Fuji closed the document with a description of the film emulsion technology. High-Efficiency Light Absorption Grain Technology The High-Efficiency Light Absorption Grain Technology efficiently uses light for optimized film performance. High-density iodine ions are incorporated into the silver , enhancing halide crystals, greatly increasing blue light absorption. Sensitizing dyes precisely and densely arrayed on the halide particle surfaces, enhancing latent image formation and improving green and red light absorption to balance with the increased blue light absorption. Fuji introduced in 1988, Document Ref. No PB-811E9ESK-89-10.SA.MW), their New polymer Matrix and Imaging Sharpening Layer (ISL) Technology with the release of Neopan 1600. Fuji previously introduced their High Efficiency Light Particles with NEOPAN 400 Professional film for more efficient use of light to improve film performance. Now, Fiji proudly introduces advanced-type High Efficiency Light Particles thanks to the new Polymer Matrix Technology of our NEOPAN 1600 Professional film. Light response is maximized for increased film speed without graininess or increase in processing times. An Image Sharpening Layer fixes image sharpening dyes in place and at high densities, thereby eliminating gray scale blurring and facilitating prompt gye flow during processing, resulting in sharply defined pictures every time. Fuji introduced Neopan 100 Acros data sheet AF3-083E Worlds Highest Standard in Grain Quality Through the incorporation of Fujifilm's new proprietary .Super Fine-å Grain Technology., this film delivers the world's highest standard in grain quality among ISO- 100 black-and-white films. Its fine grain, along with its superb grain alignment and rich gradation, makes possible smoother and sharper textural depiction, even in big enlargements. . Excellent Processing Characteristics By incorporating the newly developed .P.I.D.C. (Precision Iodine Distribution Control) Technology., NEOPAN 100 ACROS (120) provides stable processing results not only during manual processing with all kinds of developers and fixers, but in every type of automatic processor as well. Previous to Acros Fuji produced NEOPAN SS 135 Data sheet AF3-411E Fuji has been on the cutting edge of film technology. I have yet to find to my liking a satisfactory replacement for NEOPAN 400 120 film. Ilford used the term in ILFOPRO vol. 3 #4 fall 1995 ILFORDs proprietary three-layer core shell crystal emulsion technology that produces extremely fine grain and unparallel sharpness. Kodak Professional Black-and-White Films F-5 8-90 BX Describes Kodak T-GRAIN When the scientists at Kodak designed the silver-halide crystals for T-GRAIN Emulsions, the shape of the crystals became an important factor in film characteristics such as granularity and speed. The greater surface area of TGRAIN Emulsion crystals improves speed without sacrificing fine grain. Kodak included a electron microscopic photo of the T-GRAIN crystals verses conventional silver-halide crystals. Obviously the T-GRAIN crystals are better formed than the convention crystals, being larger in surface area they appear to be flatter. They did not indicate scale or any information regarding relative size or source of conventional crystals. I wonder about this. Maco Rollei R3 film description Cubic texture of silver halides instead of flat crystals Im not sure my response clears up the issue surrounding flat crystals. Jonathan Ayers From: rollei_list-bounce@xxxxxxxxxxxxx [mailto:rollei_list-bounce@xxxxxxxxxxxxx] On Behalf Of Chris Burck Sent: Wednesday, August 20, 2014 1:14 PM To: rollei_list@xxxxxxxxxxxxx Subject: [rollei_list] Re: Neopan 400 in Ultrafin On Aug 20, 2014 7:32 AM, "Richard Urmonas" <richard@xxxxxxxxxxx> wrote: >Neopan was a modern flat crystal >film, I thought that only Across was of the tabular type, and that all the rest of the Neopan line were "traditional" emulsions.