Mióta új objektívet használok, megfelelő az élesség.

Here mióta means since or ever since, introducing a time clause.

It marks a starting point in the past that continues up to the present:

• Mióta új objektívet használok... = Since I've been using a new lens...

By itself, Mióta? can also be a question meaning Since when?

Both mióta and amióta can be used in this kind of sentence.

• amióta is often felt to be a little more explicitly subordinating, and many learners meet it first in the meaning since
• mióta is also very common and natural

So:

• Mióta új objektívet használok, megfelelő az élesség.
• Amióta új objektívet használok, megfelelő az élesség.

Both are acceptable, with only a slight stylistic difference.

The -t marks the accusative, which is the case used for a direct object.

The direct object here is új objektívet because it is the thing being used:

• használok valamit = I use something

So:

• objektív = lens
• objektívet = lens (as direct object)

The adjective új does not take a separate accusative ending here; the case marking appears on the noun.

Because Hungarian verbs have indefinite and definite conjugation.

Here the object is indefinite:

• új objektívet = a new lens / new lens
• there is no definite article a/az before it

So the verb takes the indefinite form:

• használok = I use / I am using

If the object were definite, you would use the definite form:

• Az új objektívet használom. = I am using the new lens.

Hungarian often leaves out the indefinite article egy where English would use a/an.

So új objektívet használok is a perfectly natural way to say I am using a new lens.

If you add egy, it becomes a bit more explicit:

• egy új objektívet használok

Both are possible, but the version without egy is very normal.

In Hungarian, the verb van (is) is usually omitted in the present tense, third person singular, when the predicate is a noun or adjective.

So:

• Az élesség megfelelő. = The sharpness is adequate.

Hungarian does not need a separate word for is here.

But in other tenses, it appears:

• Az élesség megfelelő volt. = The sharpness was adequate.

Here az élesség means the sharpness.

Hungarian often uses the definite article with nouns that are specific in the situation, even when English might be a little less explicit. In this sentence, the speaker is talking about a particular sharpness that both speaker and listener can identify from context, such as the sharpness of the photos.

Also, élesség is an abstract noun formed from éles (sharp) plus -ség, which is similar to English -ness:

• éles = sharp
• élesség = sharpness

Both are correct, but the word order changes the information structure.

• Az élesség megfelelő. = more neutral, straightforward
• Megfelelő az élesség. = puts a bit more attention on megfelelő (adequate / good enough)

Hungarian word order is very flexible, and it often reflects what is being emphasized or presented as new information rather than rigid subject-verb-object order.

Because the verb ending already shows the subject.

• használok means I use / I am using

So Hungarian normally leaves out the subject pronoun unless it is needed for emphasis or contrast.

For example:

• Én használok új objektívet would mean something more like I am the one using a new lens or I, specifically, am using a new lens

Here it is time, not cause.

English since can mean either:

• from that time onward
• because

Hungarian mióta / amióta is used for the time meaning. It means since the time when.

If you want the causal meaning because, Hungarian would normally use something like:

• mert
• mivel

So this sentence is about a change starting at a certain time, not directly about giving a reason.

Because Mióta új objektívet használok is a subordinate clause, and Hungarian normally separates subordinate clauses with a comma.

So the structure is:

• Mióta új objektívet használok, = subordinate time clause
• megfelelő az élesség. = main clause

You can also reverse the order:

• Megfelelő az élesség, mióta új objektívet használok.

A comma is still used.