Nikon 25338 User Manual - Page 230

Appendix 224 Gamma Gamma (also written "γ") is a fundamental property of video systems which determines the intensity of the output signal relative to the input. When calculating gamma, the maximum possible input intensity is assigned a value of one, and the minimum possible intensity (no input) is assigned a value of zero. Output is calculated by raising input to a power that is the inverse of the gamma value (output = input (1/ γ)). In practical terms, raising the gamma value has the same effect as moving the midpoint slider to the left, raising midtone output values and brightening the image while leaving the maximum and minimum values untouched. Lowering the gamma value has the same effect as moving the midpoint slider to the right, lowering mid-tone output values and darkening the image. The default value for gamma is one, which produces a linear curve in which input and output values are the same. Gamma can be set to any value between 0.05 and 6.00. D-Lighting Digital DEE D-Lighting replaces the Digital DEE tool available in earlier versions of Nikon Capture. Note that Digital DEE settings are ignored when joint settings files created with earlier versions of Nikon Capture 4 are loaded into Capture NX, while Digital DEE settings saved with NEF images in earlier versions of Nikon Capture 4 are lost when these images are opened in Capture NX. Digital DEE settings files (extension ".ndd") cannot be loaded into Capture NX. Lack of Gradation D-Lighting will not have the desired effect on images which show complete lack of gradation (i.e., are completely black or completely white) in shadows or highlights. Advisories & Additional Notices Opening NEF Files Saved in Nikon Capture 3.5x or Earlier In Capture NX, changes to color balance apply before changes to curves. In Nikon Capture 3.5 and earlier, changes to curves were applied before changes to color balance, with the result that settings may change when the images saved in Nikon Capture 3.5x or earlier are opened in Capture NX.