Tenho uma visão diferente.

Tenho is the first-person singular form of the verb ter, which usually means to have.

So:

• tenho = I have
• implied subject = I

The full sentence literally starts as I have...

In Portuguese, the verb ending often already shows who the subject is, so tenho clearly tells you the speaker is I.

Portuguese often leaves out subject pronouns when the verb form already makes the subject clear. Since tenho already means I have, adding eu is usually unnecessary.

So both are possible:

• Tenho uma visão diferente.
• Eu tenho uma visão diferente.

The version without eu is very normal and natural.
You might include eu for emphasis, contrast, or clarity, such as:

• Eu tenho uma visão diferente, mas ele não.

Here, uma visão does not usually mean literal eyesight. It means something like:

• a view
• a perspective
• an outlook
• a way of seeing things

So in this sentence, uma visão diferente means a different perspective or a different way of looking at things.

Depending on context, visão can also mean:

• literal vision/eyesight
• a vision in a more abstract or strategic sense, as in business or planning
• a mental image or concept

But in this sentence, the most natural reading is perspective.

Yes, Portuguese is using the same basic idea as English: to have a view/perspective.

So:

• Tenho uma visão diferente. = I have a different perspective/view.

But this is not the same as:

• Sou diferente. = I am different.
• Vejo isso de forma diferente. = I see that differently.

These are related, but not identical:

• Tenho uma visão diferente. focuses on your perspective or outlook.
• Sou diferente. describes you as a person.
• Vejo isso de forma diferente. focuses on how you interpret a specific thing.

Visão is a feminine noun in Portuguese, so it takes the feminine indefinite article uma.

• uma visão
• not um visão

This is something you mostly have to learn with the noun. Even though the ending -ão is often masculine, visão is feminine.

So:

• a vision / a view = uma visão

In Portuguese, adjectives often come after the noun, especially in straightforward descriptive phrases.

So:

• uma visão diferente = a different view

That word order is completely normal.

If an adjective comes before the noun in Portuguese, it often changes the tone, emphasis, or style. But with diferente, the normal placement here is after the noun.

Some Portuguese adjectives have separate masculine and feminine forms:

• bonito / bonita
• diferente does not work like that

Diferente is an adjective with the same form for both masculine and feminine singular nouns.

So you get:

• um ponto de vista diferente
• uma visão diferente

The adjective does change for number, though:

• uma visão diferente
• visões diferentes

A natural Brazilian pronunciation is approximately:

TEN-yoo oo-ma vee-ZOWN jee-feh-REN-chee

A few important points:

• tenho: the nh sounds like the ny in canyon
• uma in connected speech can sound lighter than a careful textbook oo-ma
• visão has a nasal ending, so the final sound is not a strong -n
• diferente in Brazil often sounds like jee-feh-REN-chee or dji-feh-REN-tchi, depending on accent

A rough IPA version in Brazilian Portuguese would be something like:

/ˈte.ɲu ˈu.mɐ viˈzɐ̃w dʒifeˈɾẽtʃi/

All three can work, but they are slightly different:

• visão = vision / perspective / outlook
• opinião = opinion
• ponto de vista = point of view

Compare:

• Tenho uma visão diferente.
  Sounds a bit broader and more reflective. It suggests an overall perspective.

• Tenho uma opinião diferente.
  More directly means I have a different opinion.

• Tenho um ponto de vista diferente.
  Very close to I have a different point of view.

So visão is natural, especially when you mean perspective, not just a simple opinion.

Yes. Tenho uma visão diferente sounds natural and can come across as:

• thoughtful
• polite
• reflective
• somewhat professional, depending on context

It can be a softer or more diplomatic way to disagree. For example, instead of bluntly saying Discordo (I disagree), someone might say:

• Tenho uma visão diferente.

That can sound less confrontational.

You can add a complement after the sentence, depending on what you mean:

• Tenho uma visão diferente disso. = I have a different view of that.
• Tenho uma visão diferente sobre isso. = I have a different view on that.
• Tenho uma visão diferente da situação. = I have a different view of the situation.
• Tenho uma visão diferente sobre o problema. = I have a different view on the problem.

Very often, Brazilian Portuguese uses sobre when talking about a topic:

• uma visão diferente sobre isso

That is a very useful pattern to remember.

On its own, it usually would not be understood as literal eyesight. Most people would hear it as I have a different perspective.

If you wanted to talk about eyesight, the context would normally make that clear, or you would use more specific wording, such as:

• Tenho um problema de visão. = I have a vision problem.
• Minha visão é diferente. could sound more literal depending on context, but still may be ambiguous.

So in normal conversation, Tenho uma visão diferente is most naturally interpreted figuratively.