Yes—there’s often room to improve it in post, especially if you have the original RAW file. In black-and-white conversion, try adjusting the color channel mix, especially the green and yellow sliders, to lighten or darken different parts of the trees and create more separation. If your editor is limited, you can first shift the color image slightly toward green or yellow, then convert again and compare results.

Local adjustments can also help: selectively mask the trees and add clarity, local contrast, or a large-radius sharpening/USM effect. You can also use curves to lift deep shadows slightly and steepen tonal separation in the dark areas so near-black tones don’t all merge together.

More advanced options include blending multiple versions of the same image with different brightness/contrast settings using masks, or applying adaptive/local contrast enhancement only where needed.

Be aware that opening up dark areas can reveal noise, so some cleanup may be needed. Work from the RAW file and at high bit depth if possible to preserve smooth tones and avoid banding.