Which microscope objective lens is recommended to initially get an object into focus?

The 4x objective lens is recommended for initially getting an object into focus because it provides a wider field of view and a greater depth of field compared to higher magnification lenses. This allows for easier locating and centering of the specimen on the slide. When using lower magnification, such as 4x, the user can quickly scan the slide to find their area of interest without the difficulty that comes with higher magnifications where the field of view is significantly narrower and focused more tightly.

Starting with a lower magnification helps ensure that the specimen is in view and properly illuminated, making it much easier to fine-tune focus later with higher magnification lenses as needed. This approach aids in avoiding potential damage to the specimen or the slide that might occur when using a higher magnification lens too early in the focusing process.