ImageJ亮度和对比度超过一堆图像。

I'm looking through a dataset set of images in ImageJ (a stack of .tif images, about 130 frames), and I have a problem with the dataset. It's a series of microscope images, with each frame being a plane about 3-4 micrometers above/below the previous one. As I go deeper into the dataset, light scattering makes for a brighter background, so the main features of the specimen are dimmer.I'm looking through a dataset set of images in