Part of: Photographic collection,
Thomas, John, 1838-1905.
Title assigned by cataloguer., Original note by John Thomas '1762 Rev W M Lewis (No 1) 3 cab'., Note on library envelope 'Rev Wm Lewis.'.
Duplicate negative .57., Computer file. Aberystwyth: National Library of Wales, 2001-2002. (John Thomas digitisation project). Original file captured in uncompressed TIFF format. Cropping, image size, unsharp masking, gamma correction and compression settings for screen res JPEG were made using Adobe Photoshop v6.0.1 and Abobe Imageready v3. Nexscan F4100; Linocolor v6; Custom built acid free card mount to hold glass plates from scanner bed; no validation key, no encryption, no watermark. Made from duplicate negatives. Target resolution of Approx. 1200ppi to allow production of 2094x1694 @300ppi exhibition prints; Screen-res copies use JPG commpression at approx 35%; 8bit; Hi-res TIFFs use grayscale with gamma of 1.8; Apple Colorsync. No control targets.
2001-2002 ; scanned. Reprographic Unit, National Library of Wales, Aberystwyth, Ceredigion.