Try Topaz Sharpen AI in the Stabilize mode.
Topaz Sharpen seems very good, thanks Michael for suggesting.
My issue is not the motion blur of the raindrops though, its really about selectively contrasting them out against the backdrop. If there was a
negative setting to the 'dust and scratches filter', that picked them out and enhanced, that would be great!
I find that the best way to highlight raindrops and snowflakes is actually in-camera, using a flash.
Very true, but the image is already taken and I have to work with it!
If you have NIK Silver Efex Pro, you can select one of the presets or just start moving the structure and contrast sliders until the raindrops are emphasized to your liking, then click OK and go back to PS and set the new black and white SEP layer to luminosity blend rather than normal mode. If you have Tony Kuper's TK7 Action Panel and you want more control, you can set a very tight mask in the SEP layer, Zone 5.5 for example, and limit the structural adjustments to the luminosity range of the rain drops. Finish with a Curve adjustment Clipping Mask to adjust contrast of the raindrops to your liking.
Thanks, but I forgot to specify this is a color images, and unless I'm mistaken that NIK Silver Efex is for b/w?
I also should say it's a 100mp Phase One image, so quality is very high, and that means I use Capture One (v20), not Lightroom, as Phase color in their own RAW convertor is better.
Wish I understood blend layers and layer styles better - feel that's likely closest answer.
Thanks all - kind of people to take time to suggest answers