Xuanqin Chen 寫:
Speaking of B&W, I use Tri-X and Fuji Acros for my 4x5. I believe digital capture has different spectral sensitivity curves of these characteristics in wavelengths vs. "panchromatic". In general, CCD takes affect to violet and blue light and very insensitive to yellow and green, and virtually not at all brilliant to red if you do straight conversion to B&W. Panchromatic films are excessively affected by influences of visible of light including ultraviolet radiation. Therefore they produce in varying shades of tone B&W relationship in all colors of natural light. For Digital capture, I don't mind carrying a "minus-blue" filter (#12) to the scattering that happens on those blue wavelengths. Thanks.
-Suan
说出了数码在色彩上的局限,长见识了。
