Bu afişte odak noktası net değil; resmi biraz sola kaydırınca daha iyi görünüyor.

Afişte means on this poster or in this poster.

It is afiş + -de/-da/-te/-ta, the locative suffix, which gives the meaning in / on / at.

Why -te instead of -de?

Because Turkish uses consonant harmony here:

• after a voiceless consonant like ş, the suffix begins with t
• so afiş + de becomes afişte

So:

• bu afiş = this poster
• bu afişte = on/in this poster

Odak noktası is a very common Turkish noun compound meaning focal point or point of focus.

Literally, it is built like this:

• odak = focus
• nokta = point
• nokta + -sı = noktası

In Turkish, many compound nouns use this pattern:

• first noun stays plain
• second noun takes a 3rd-person possessive ending

So:

• odak noktası = focal point
• literally something like its focus point

This is just how Turkish commonly forms this kind of fixed expression.

Değil is the standard way to negate a noun or adjective predicate.

Here:

• net = clear, sharp, distinct
• net değil = not clear / not sharp

So:

• odak noktası net değil = the focal point is not clear

This is different from negating a normal verb with suffixes like -ma/-me.
With adjectives and nouns, Turkish usually uses değil as a separate word.

Examples:

• iyi = good → iyi değil = not good
• hazır = ready → hazır değil = not ready

In this sentence, resmi means the picture/image as the direct object.

It comes from resim = picture, image.

So here:

• resmi kaydırmak = to shift/move the picture

You are right that resmî can also mean official in Turkish. In modern everyday writing, people often do not mark the circumflex, so both may appear as resmi. But in this sentence, the grammar clearly shows it is resim + accusative.

So here it is the picture, not official.

This happens because resim takes the definite accusative suffix -(y)ı / -(y)i / -(y)u / -(y)ü, but the word also undergoes a common sound change.

Normally, for a definite direct object:

• resim
  • -i

But in words like resim, the unstressed vowel in the second syllable often drops before a vowel-initial suffix.

So:

• resim + i → resmi

This is similar to:

• şehir → şehri
• burun → burnu
• akıl → aklı

So resmi here means the picture as a specific object being moved.

Sola means to the left.

It comes from:

• sol = left
• sola = to the left

The -a / -e ending here is the dative suffix, which often expresses direction toward something.

So:

• sola kaydırmak = move/shift to the left
• sağa kaydırmak = move/shift to the right

Compare:

• solda = on the left
• sola = to the left

In this sentence, the meaning is directional, so sola is the correct form.

Kaydırınca means something like:

• when you shift it
• when it is shifted
• if you shift it

It comes from:

• kaydırmak = to slide, shift, move
• -ınca / -ince = a converb ending meaning when, once, or sometimes if

So:

• kaydırmak → kaydırınca
• resmi biraz sola kaydırınca = when you move the picture a little to the left

This structure is very common in Turkish for linking actions:

• bakınca = when one looks
• gidince = when one goes
• yapınca = when one does/makes

The subject is not stated explicitly, and that is very normal in Turkish.

In context, kaydırınca often has a generic meaning:

• when you shift it
• when one shifts it
• after shifting it

Turkish often leaves the subject out when it is obvious, general, or not important.

So the sentence does not force a single English subject. Depending on context, you could understand it as:

• when you move the picture a little to the left
• when the picture is moved a little to the left

English usually needs a subject, but Turkish often does not.

Biraz means a little or slightly.

So:

• sola kaydırmak = move it to the left
• biraz sola kaydırmak = move it a little to the left

It softens the instruction and makes it more precise: not a big movement, just a small adjustment.

In visual/design contexts, biraz is very common because people often mean a subtle change:

• biraz büyüt = enlarge it a little
• biraz aşağı indir = move it down a little

Daha iyi görünüyor means it looks better.

Breakdown:

• daha = more
• iyi = good / well
• görünüyor = appears / looks / is visible

So literally it is something like:

• it is appearing more well but natural English is:
• it looks better

This is a very common Turkish way to talk about visual appearance:

• iyi görünüyor = it looks good
• daha iyi görünüyor = it looks better
• kötü görünüyor = it looks bad

Görünüyor comes from the verb görünmek, which means to appear, to be visible, or to look.

Form:

• görün- = appear / be seen
• -üyor = present continuous / current state marker

So:

• görünüyor = it is appearing / it looks / it can be seen

In natural English, the best translation here is looks:

• daha iyi görünüyor = it looks better

Turkish often uses the present continuous in places where English simply uses the present:

• Güzel görünüyor. = It looks nice.
• Net görünmüyor. = It doesn’t look clear / It isn’t visible clearly.

The semicolon links two closely related thoughts:

• Bu afişte odak noktası net değil
• resmi biraz sola kaydırınca daha iyi görünüyor

The idea is:

1. the focal point is not clear
2. moving the image a bit left improves it

A semicolon is a neat way to connect those two related statements without fully separating them.

In Turkish, you might also see:

• a comma
• a dash
• or even two separate sentences

So the semicolon is natural, but it is more about style and clarity than grammar.