'Local' control of density in photographic printing achieved by shading (using your hands, small pieces of card or various other dodging tools), therefore, holding back the image-forming light from a part of the photo to make that area of the print lighter. (see Burning- in)
Found on https://www.encyclo.co.uk/local/20176
noun nonperformance of something distasteful (as by deceit or trickery) that you are supposed to do; `his evasion of his clear duty was reprehensible`; `that escape from the consequences is possible but unattractive` Found on https://www.encyclo.co.uk/local/20974