Why do you have to be careful focusing with the high-power objective?

When using the high-power objective on a microscope, it's essential to be careful because the working distance is significantly reduced, increasing the risk of the objective lens coming into contact with the slide. This can damage both the slide and the lens. Additionally, the field of view is narrower, making it easier to lose focus and misalign the specimen. Proper focusing techniques are crucial to avoid these issues and to obtain clear, detailed images.