Tôi thấy một máy ảnh lạ.

In Vietnamese, adjectives usually come after the noun they describe.

So:

• máy ảnh lạ = a strange camera
• literally: camera strange

This is a very common pattern in Vietnamese:

• nhà lớn = big house
• xe mới = new vehicle / new car
• người tốt = good person

So một máy ảnh lạ follows normal Vietnamese word order.

Lạ often means strange, odd, unfamiliar, or unusual, depending on context.

In this sentence, it most naturally means something like:

• a strange camera
• an unusual camera
• a camera I’m not familiar with

Vietnamese adjectives can be a little broader in meaning than a single English word. So lạ does not always mean something dramatic or bizarre; sometimes it just means not familiar or different from what is expected.

Một literally means one, but it is also commonly used like English a/an.

So:

• một máy ảnh = a camera / one camera

In this sentence, it introduces a singular noun, much like a in English.

Whether it feels more like a or one depends on context. Here, it most likely just means a rather than strongly emphasizing the number.

Yes, một cái máy ảnh lạ is also possible.

Vietnamese often uses classifiers, but in everyday speech and writing, they are not always required in every context. With many common objects, especially in simple sentences, speakers may omit the classifier.

So both of these can work:

• một máy ảnh lạ
• một cái máy ảnh lạ

Very roughly:

• without the classifier: a bit more neutral or compact
• with cái: a bit more explicitly noun-like, often very natural in speech

You may hear classifiers more often in conversation, but their omission here is not wrong.

Máy ảnh is the normal Vietnamese word for camera.

Literally:

• máy = machine
• ảnh = photo / image

So it is something like photo machine.

This is a good example of how Vietnamese often builds vocabulary from smaller meaningful parts. Even though it is written with a space, máy ảnh functions as a single noun phrase meaning camera.

Thấy means to see.

In this sentence:

• Tôi thấy một máy ảnh lạ. = I see / saw a strange camera.

A useful comparison:

• thấy = see, notice, perceive
• nhìn = look
• nhìn thấy = see visually, catch sight of

So:

• Tôi thấy... = I saw / noticed...
• Tôi nhìn... = I looked at...
• Tôi nhìn thấy... = I saw...

In many everyday situations, thấy and nhìn thấy can be quite close in meaning, but thấy is often simpler and very common.

Vietnamese does not mark tense in the same obligatory way English does. A sentence like Tôi thấy một máy ảnh lạ can be interpreted based on context.

Depending on the situation, it could mean:

• I see a strange camera
• I saw a strange camera
• sometimes even something close to I have seen a strange camera

If the speaker wants to make time clearer, Vietnamese often adds time words or aspect markers, such as:

• hôm qua = yesterday
• đã = past/completed
• đang = ongoing
• rồi = already

For example:

• Hôm qua tôi thấy một máy ảnh lạ. = Yesterday I saw a strange camera.
• Tôi đã thấy một máy ảnh lạ. = I saw / have seen a strange camera.

So without extra markers, the tense is understood from context.

Tôi is a very common and safe way to say I, especially in neutral situations.

However, Vietnamese pronouns depend a lot on relationship, age, and social context. A speaker might use other words instead of tôi, such as:

• mình
• em
• anh
• chị
• con
• cháu

So tôi is not the only word for I. It is just one of the most neutral and widely usable choices, especially for learners.

In a textbook sentence like this, tôi is very normal.

Normally, no. Vietnamese adjectives usually come after the noun, so máy ảnh lạ is the standard order.

Putting lạ before the noun would sound unnatural in ordinary Vietnamese.

English:

• a strange camera

Vietnamese:

• một máy ảnh lạ

This noun + adjective pattern is something English speakers need to get used to, because it is the opposite of normal English word order.

The original sentence is already natural, but depending on context, a speaker might say:

• Tôi thấy một cái máy ảnh lạ.
• Tôi nhìn thấy một máy ảnh lạ.

These versions are slightly different in feel:

• thấy is simple and direct
• nhìn thấy emphasizes the act of seeing
• cái adds a common classifier for objects

So the original sentence is perfectly fine, but everyday spoken Vietnamese often allows small variations like these.