Which type of microscopes (NOT which objective) has the largest depth of field?

Well in a normal food web the bottom or the base are the producers which are ex: plants etc

The middle is mostly made up of herbivores which are animals that only eat plants ex: grasshoppers,insects etc

The top is made up of Carnivores which only eat meat ex: Lions,sharks,tigers

The middle and the top are also made up of omnivores they basically eat both plants and meat Ex: Humans