|
Let's see if this helps. I did this with gimp, which may behave different from photoshop.
015: Changed to greyscale mode. Adjusted levels: input levels from 70 (black) to 230 (white). Saved as JPG with 85% quality (my default). Result: 015 -_(2).jpg, 40% size. Saved as JPG with 30% quality. Result: 015 -_(3).jpg, 19% size. Changed to indexed color mode, 16 maximum levels. Saved as PNG, maximum compression. Result: 015 -_(4).png, 18% size.
225: Same process, but adjusted the levels between 85 and 215. 225 -_(2).jpg: 38%. 225 -_(3).jpg: 19%. 225 -_(4).png: 16%.
I think the 30% quality JPGs are too aggressive and blurry, but the PNGs look quite acceptable.
|