I See You Over There !

Adds additional options to the render distance of entities and block-entities.
Can fix the lower render distance on small entities, and automatically increase the render distance when zooming in.
This should theoretically work with any zoom mod.

This may not work as effectively in multiplayer. Unless the server is configured to have an increased tracking distance (vanilla settings), the client will not even know about far away entities, and thus won't be able to render them.
In singleplayer, the mod automatically adjusts the server-side's tracking distance to match the render distance.

Configuration

The config can be edited in-game using Mod Menu + Cloth Config

fovScaling

When enabled, causes entity and block-entities render distances to increase or decrease based on the FOV (e.g, when using a spyglass).

When enabled, all other settings (except entity.max) will scale with the FOV. Their defined value will correspond to a FOV of 90°.

entity.min

Forces all entities within this range to be rendered.

In vanilla, entity render distance scales based on the entity's physical size. Without that setting, the smallest ones may require you to get absurdely close in order for them to become visible.

entity.max

Prevents entities beyond this range from being rendered.

This setting is intended to serve as a limiter. It is not affected by FOV-scaling, and will override the Minimum value.

block.min

Renders all block-entities within this range. This can only increase block-entity render distance, not reduce it.

This setting may be removed in the future. It offers no benefit over using the mod "Enhanced Block Entities".

block.beacon

Render distance for the beacon's beam.