Освещение готово, и кинокамера стоит на штативе.

In Russian, the present-tense form of to be is usually omitted.

So Освещение готово literally looks like Lighting ready, but it means The lighting is ready.

If you changed the tense, Russian would use a form of быть:

• Освещение было готово = The lighting was ready
• Освещение будет готово = The lighting will be ready

Because освещение is a neuter singular noun, and готово agrees with it.

The short-form adjective готов changes like this:

• masculine: готов
• feminine: готова
• neuter: готово
• plural: готовы

Since освещение is neuter, Russian uses готово.

Готово is the short form of the adjective, and short-form adjectives are commonly used as the predicate in sentences like X is ready.

So:

• Освещение готово = The lighting is ready

The full form готовое is usually used directly with a noun:

• готовое освещение = ready/prepared lighting

So in this sentence, готово is the natural choice.

Here освещение means lighting in the sense of the light setup, especially in photography, film, or stage contexts.

Even if several lights are involved, Russian often uses the singular noun освещение as a general mass/collective idea:

• Освещение хорошее = The lighting is good

So it does not have to refer to just one light.

Russian often uses verbs that describe an object's physical position:

• стоять = to stand
• лежать = to lie
• висеть = to hang

A camera on a tripod is thought of as standing, so кинокамера стоит на штативе sounds very natural.

A more neutral option could be находится (is located), but that is less vivid and often more formal:

• Кинокамера находится на штативе

It is the prepositional case.

The preposition на can take different cases depending on meaning:

• на + prepositional = location, on
• на + accusative = motion onto something

So:

• на штативе = on the tripod, located there
• на штатив = onto the tripod, moving there

Because the camera is already there, Russian uses на штативе.

Кинокамера means a movie camera / cinema camera / film camera.

Yes, in many contexts you could say камера, especially if it is already clear that you mean a camera. But камера is broader and can mean other things too, such as a chamber or a cell, depending on context.

So кинокамера is more specific and removes ambiguity.

Because и is joining two independent clauses, each with its own subject and predicate:

• Освещение готово
• кинокамера стоит на штативе

In Russian, a comma is normally used before и in this situation.

Yes. Russian word order is flexible, and changing it usually changes the emphasis rather than the basic meaning.

For example:

• Освещение готово, и кинокамера стоит на штативе.
  Neutral statement.
• На штативе стоит кинокамера.
  More emphasis on where the camera is.
• Кинокамера стоит на штативе.
  Neutral by itself.

So the original order is natural, but not the only possible one.

Russian has no articles.

So кинокамера can mean:

• a movie camera
• the movie camera

and штативе can mean:

• on a tripod
• on the tripod

The exact meaning comes from context, not from an article.

The stress is:

• освеще́ние
• гото́во
• кинокаме́ра
• стои́т
• на штати́ве

Stress is important in Russian, because it is not always predictable and can affect pronunciation a lot.