## Linearization with Photoshop Curves Layer The Photoshop .acv curve file is most compatible and can be used with black and white or RGB images, but is limited to only 16 curve points ### Photoshop .acv Curve File Instructions * Open your final image you want to print in Photoshop. * If your image has already been converted to a negative, create a new curves adjustment layer. * If it is a positve image, invert it (command + i) or create an Invert adjustment layer, and **then** create a new curves adjusment layer * Select the curves layer from the Layers panel and click the icon at the to the top right corner of the Properties panel to select the **Load Curves Preset** option * Select the .acv file you saved from the profiling application ![[../Screenshots/QTP-ProDN/load curves preset.png]] ![[../Screenshots/QTP-ProDN/corrected mage with adjustment curve.png]] * Flip the image horizontally if needed and save it with any relevant file name to signify it has the curve applied to the image directly. * Make the corrected negative on your transparency material and print it with your standardarized exposure and processing steps. #### Non-QTR Workflows using a color fill layer as for your blocking density Make sure your defualt RGB color space is Adobe RGB, and the Grayscale workspace is Gray Gamma 2.2 in your Photoshop Color Settings. * Open your final image you want to print in Photoshop. * Convert to 16-bit RGB (it will automatically be converted to Adobe RBG1998 if your RGB color space is set to that. If not, go to the Photoshop Edit menu -> Convert to Profile -> Adobe RGB 1998) * Invert the to a negative * Make the curves adjustment layer and load the .acv curves preset file you saved from the profiling application * Apply the color fill layer you used when printing the linearization target **above** the correction curve layer in the layer stack.