Sigma 105mm vs. Sony 90mm macro

In analog times, we said that condenser lighting was “better” for B&W while diffuse was for colour. It had to do with the silver halide crystals and the film mask, but I don’t remember that detail any more.

In one of my test setups (show it), I moved the LED panel closer and farther away from the negative and noticed, that the far-away panel gave a similar effect like condensed light. While more directed light made captures look more crisp, it also made dust and scratches stand out more clearly.