These are shots of the same rhododendron bud. I tried to simulate and experiment with both red and yellow filters in software(layers and transparency) to improve the otherwise washed out bud color in grayscale. This succeeded compared to the original "straight to gray" from the original color image...yet, something is lacking. Have you any suggestions for simulating lens filters using software? Real filters often behave strangely with some digital cameras. God Bless. TomDart.