Redigeringen etter fotokurset tar tid.

Redigeringen is the definite singular form of redigering.

• en redigering = an editing / an edit
• redigeringen = the editing / the edit

In this sentence, Norwegian is referring to a specific editing process, not editing in general.

Compare:

• Redigeringen etter fotokurset tar tid. = The editing after the photo course takes time.
• Redigering tar tid. = Editing takes time. (general statement)

Norwegian usually expresses definiteness by adding it to the end of the noun.

So instead of a separate word like English the, you often get:

• en redigering = an editing
• redigeringen = the editing

This is very common in Norwegian. The same thing happens in fotokurset:

• et fotokurs = a photo course
• fotokurset = the photo course

Because the nouns have different grammatical genders.

• redigering is a common gender noun:
  en redigering → redigeringen
• fotokurs is a neuter noun:
  et fotokurs → fotokurset

So:

• common gender definite singular often ends in -en
• neuter definite singular often ends in -et

Here, etter means after in a time sense.

So etter fotokurset means:

• after the photo course

This is the most natural reading in this sentence.

Be aware that etter can mean other things in other contexts, such as according to or looking for, but not here.

Because Norwegian normally forms compound nouns as one word.

So:

• foto
  • kurs = fotokurs

This is very typical in Norwegian. English often writes similar things as two words, but Norwegian usually joins them:

• photo course → fotokurs
• summer vacation → sommerferie
• school bus → skolebuss

Then the definite ending is added to the whole compound:

• et fotokurs → fotokurset

Yes. Tar tid is a very common expression meaning takes time.

• ta = take
• tid = time
• tar = present tense of ta

So:

• tar tid = takes time

This is completely natural Norwegian, just like English takes time.

You will also often see:

• Det tar tid. = It takes time.
• Det tar lang tid. = It takes a long time.
• Det tar litt tid. = It takes a little time.

Because tid here is being used as an uncountable noun, much like time in English.

English says:

• It takes time

not usually:

• It takes a time

Norwegian works the same way here:

• tar tid

You can still modify it:

• tar lang tid = takes a long time
• tar mye tid = takes a lot of time
• tar litt tid = takes a little time

The subject is the whole noun phrase:

Redigeringen etter fotokurset

That whole phrase means something like the editing after the photo course.

Then the predicate is:

tar tid = takes time

So the structure is:

• Subject: Redigeringen etter fotokurset
• Verb: tar
• Object/complement: tid

Yes, this is normal.

The sentence has the basic pattern:

Subject + verb + rest

• Redigeringen etter fotokurset = subject
• tar = verb
• tid = rest

So it follows the standard order you would expect in a simple Norwegian main clause.

In this sentence, it most naturally goes with redigeringen:

• redigeringen etter fotokurset = the editing after the photo course

So it is part of the subject phrase.

In practice, the meaning is still temporal: the editing that happens after the course.

If you moved the phrase to the front:

• Etter fotokurset tar redigeringen tid.

that would more clearly mean:

• After the photo course, the editing takes time.

Both are possible, but the original sentence packages etter fotokurset together with redigeringen.

Yes, but the meaning becomes a bit more general or abstract.

• Redigeringen etter fotokurset tar tid.
  = The editing after the photo course takes time.
  This points to a specific editing task/process.

• Redigering etter fotokurset tar tid.
  = Editing after the photo course takes time.
  This sounds more like a general statement.

So both can work, but redigeringen is more specific.

Yes, fotokurs is a natural and common word.

It usually means a course about photography. Depending on context, English might translate it as:

• photo course
• photography course

So fotokurset is simply the photography course or the photo course.

Tar is the present tense of ta.

One helpful thing about Norwegian is that verbs do not change for person the way English verbs sometimes do.

So you get:

• jeg tar
• du tar
• han tar
• vi tar

The verb form stays the same.

In this sentence:

• Redigeringen ... tar tid. = The editing ... takes time.

Usually after the photo course is the better translation, because etter most naturally means after here.

If you want to say from the photo course, Norwegian would more naturally use something like:

• fra fotokurset

So:

• etter fotokurset = after the photo course
• fra fotokurset = from the photo course

That is an important distinction.