Paul Thompson writes: >> I am sending a 38mb tiff out to be converted to a 35mm transparency.
Can anyone give any guidelines as to what sharpening I should apply? I appreciate that sharpening has many variables but I just need a starter for 10 to get a couple of tests done. I do an edge sharpening when I send my files to print and wonder whether I should apply a similar sharpening for 35mm output. << Firstly, get as much info/advise as possible from the folk with the film recorder who will output your file - file mode, pixel dimensions for both edges, colour mode and colour space, USM etc. I am not sure that contone output needs USM, but perhaps the files do? Perhaps no sharpening, or very minimal (very small radius, lower amounts etc). The regular sharpening halos are more for print output where the dot structure is an issue in introducing softness (among other things). Most images for halftone repro can use both regular and edge sharpening, as edge sharpening often does not hit all the areas that really need it. Limiting the effect of the light part of the USM halo (using duped USM layers and lighten mode at a lower opacity than the other layer in darken mode, or using the layer option blend if sliders to limit the light halo effect if only using one layer is recommended, as is a luminosity blend of the initial USM). This is really critical where one finds high contrast image content and if the USM is too strong in these areas (width/amount). As the slide will presumably be projected or perhaps scanned at some future point, the USM will be amplified and enlarged. This may not be good. I have had this done perhaps three times in my career - the images were sharp but not 'print sharp' (If I remember things correctly) and there were no complaints that I know of, but I don't really know about the end use of the slides. Perhaps it would be worth testing a 'soft' image (natural or small blur in Photoshop) against a couple of different strength sharpened files and test them with projection or scanning etc. I would perhaps play on the softer side than the sharper if I could not do tests, but this may be me being worried over nothing. More on sharpening can be found at these links: http://members.ozemail.com.au/~binaryfx/PSTV_links.html#S (scroll to the sharpening links section) http://members.ozemail.com.au/~binaryfx/ST_USM1.html Regards, Stephen Marsh. =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
