Here is a 96 image focus stack of a phase differential image I took of a crystal with my microscope, the color denotes depth. This is close to the limits of optical microscopy! Ultra high res version here: https://www.djdlabs.com/CRYSTAL.jpg
![](https://www.djdlabs.com/wp-content/uploads/2023/08/355281282_10161438759123291_1254457311362576328_n-1024x732.jpg)
Lower magnification of the tip of the Crystal. For scale the entire photo is the size a sewing needle body.
![](https://www.djdlabs.com/wp-content/uploads/2023/08/354597671_10161438772503291_1402746968981684545_n-1024x732.jpg)