Pysäköinninvalvoja otti valokuvan ajoneuvosta.

Because Finnish very often forms nouns by combining smaller words into one compound word.

Here, pysäköinninvalvoja is built from:

• pysäköinti = parking
• valvoja = supervisor, inspector, monitor

So the whole compound means something like parking inspector or parking enforcement officer.

Writing compounds as one word is completely normal in Finnish. Where English often uses separate words, Finnish often prefers a single compound.

That -n is very common in Finnish compounds. The first part often appears in a genitive-like form before the second part.

So:

• pysäköinti = parking
• pysäköinnin = of parking
• pysäköinninvalvoja = literally something like supervisor of parking

You do not need to translate that -n literally every time. In compounds, it is just one normal way Finnish links the parts together.

Otti is the past tense of ottaa, which means to take.

So:

• ottaa = to take
• ottaa valokuva = to take a photograph
• otti = took

This is the simple past, so the sentence describes a completed action in the past.

Because valokuvan is the object form used here.

• valokuva = photo, photograph
• valokuvan = the photo / a photo as a complete object of the action

In this sentence, the action is complete: the inspector took one whole photo. Finnish usually marks that with the total object.

For singular nouns, that form often looks exactly like the genitive:

• valokuva → valokuvan

So otti valokuvan means took a photo.

In this sentence, it functions as the object of the verb, so grammatically it is an accusative-type object. But in practice, with many singular nouns, that object form looks exactly the same as the genitive form.

So learners often see:

• dictionary form: valokuva
• object form here: valokuvan

A useful beginner way to think about it is:

• valokuvan here is the form used for a completed, whole object

You do not need to worry too much at first about whether to label it genitive or accusative; the important thing is knowing why the -n appears.

Yes, -sta/-stä usually has the basic meaning from/out of, and here the word is in the elative case:

• ajoneuvo = vehicle
• ajoneuvosta = from the vehicle / out of the vehicle

But with words like valokuva and kuva, Finnish commonly uses this case to express what the picture is of.

So:

• valokuva ajoneuvosta = a photograph of the vehicle

This is one of those places where Finnish and English use different patterns. English says of the vehicle, but Finnish naturally says something closer to a photo from/about the vehicle.

Usually not in this meaning.

• valokuva ajoneuvosta means a photo of the vehicle
• ajoneuvon valokuva would sound more like the vehicle’s photograph or a photograph belonging to/associated with the vehicle, which is not the intended idea here

After ottaa valokuva or ottaa kuva, Finnish commonly uses -sta/-stä for the thing being photographed.

So otti valokuvan ajoneuvosta is the natural choice.

Because Finnish has no articles.

So valokuvan can mean:

• a photograph
• the photograph

And ajoneuvosta can mean:

• of a vehicle
• of the vehicle

The exact meaning comes from context, not from separate article words.

This is very common in Finnish, and English speakers usually need some time to get used to it.

The normal neutral word order here is:

• Pysäköinninvalvoja = subject
• otti = verb
• valokuvan = object
• ajoneuvosta = phrase telling what the photo was of

So the sentence has a straightforward subject–verb–object structure.

But Finnish word order is more flexible than English. Other orders are possible if you want to emphasize something different. For example, moving ajoneuvosta earlier could put more focus on the vehicle.

Still, for a basic neutral sentence, Pysäköinninvalvoja otti valokuvan ajoneuvosta is a very natural order.

Kuva is a broader word. It can mean:

• picture
• image
• illustration
• photo, depending on context

Valokuva is more specific and clearly means photograph.

So in this sentence, valokuvan makes it explicit that an actual photo was taken, not just some kind of image or picture.

Yes, very often it would.

Finnish distinguishes between a total object and a partial object. Here, valokuvan is a total object: one complete photo was taken.

A partial-object version could look like:

• otti valokuvaa ajoneuvosta

That can suggest a less bounded action, depending on context, such as photographing the vehicle in an ongoing or indefinite way.

For beginners, the useful contrast is:

• otti valokuvan = took a photo, one complete photo
• otti valokuvaa = was taking a photo / was photographing / took some photos in a less clearly bounded way

So the -n in valokuvan helps show that the action is seen as complete.