ryokou de totta syasin wo syasinkan de genzousimasita

They are doing two different jobs:

• 旅行で = on the trip / during the trip
  • Here, で marks the situation or setting in which the photos were taken.
• 写真館で = at the photo studio / photo lab
  • Here, で marks the place where the action 現像しました happened.

So even though both are で, they attach to different parts of the sentence:

• 旅行で撮った写真 = photos taken on the trip
• 写真館で現像しました = developed them at a photo lab

撮った modifies 写真.

So:

• 旅行で撮った写真 = the photos that were taken on the trip = more naturally, the photos I took on the trip

This is a very common Japanese structure: a verb comes before a noun and describes it.

Examples:

• 昨日買った本 = the book I bought yesterday
• 日本で食べた料理 = the food I ate in Japan

So here, 撮った is directly describing 写真.

Because this is a relative clause in Japanese.

In English, we would say:

• the photos that I took on the trip

In Japanese, the noun being described is placed at the end, and the role it plays inside the clause is simply understood:

• 旅行で撮った写真

The 写真 is the thing that was taken, so it is understood as the object of 撮った. Japanese does not need an extra を there.

So you should think of it like:

• [旅行で 撮った] 写真
• [I took on the trip] photos

This “missing slot” is very normal in Japanese noun-modifying clauses.

Because the two verbs refer to two different actions:

• 撮った = took
• 現像しました = developed

The sentence is saying:

1. First, the photos were taken on the trip.
2. Later, those photos were developed at the photo lab.

In Japanese, the tense inside a noun-modifying clause is independent from the tense of the main verb.

So:

• 撮った写真 = photos that were taken
• 現像しました = developed

This is completely normal and does not mean the sentence has “too much past tense.”

を marks 写真 as the direct object of 現像しました.

So:

• 写真を現像しました = developed the photos

Even though 写真 is already modified by 旅行で撮った, the whole noun phrase still functions as the object:

• 旅行で撮った写真を = the photos I took on the trip

Then the main verb tells you what happened to them:

• 写真館で現像しました = developed them at a photo lab

Yes. 写真館 is a compound noun:

• 写真 = photograph
• 館 = building/hall/establishment

So 写真館 means something like:

• photo studio
• photo shop
• photo lab

Depending on context, it may mean a place where you:

• take formal photos,
• get film developed,
• order prints

In this sentence, because of 現像しました, it clearly means a place where the photos were processed/developed.

現像する traditionally means to develop film.

So this sentence most naturally suggests film photography:

• photos were taken on a trip
• then developed at a photo lab

A useful nuance:

• 現像する = develop film
• プリントする = make prints
• 印刷する = print (more general, often digital)

In modern everyday life, if the pictures were digital, people might choose a different verb depending on what exactly happened. But in textbook-style Japanese, 写真を現像する strongly suggests film being developed.

Because に and で do different things.

Here, 旅行で means:

• on the trip
• during the trip
• in the context of the trip

It sets the situation in which the photos were taken.

You cannot simply say 旅行に撮った写真 for this meaning.

If you want に, you would need a different structure, such as:

• 旅行に行って撮った写真 = the photos I took when I went on a trip

So:

• 旅行で撮った写真 = compact, natural
• 旅行に行って撮った写真 = more explicit

Because Japanese very often omits subjects and topics when they are clear from context.

So this sentence does not explicitly say who took the photos or who developed them. In many situations, listeners will naturally understand it as something like:

• I developed the photos I took on the trip

But depending on context, it could also mean someone else did it.

Japanese often leaves out:

• 私は
• 彼は
• 私が
• etc.

This is one of the biggest differences from English.

To some extent, yes, because particles show the grammatical roles.

The given order is very natural:

• 旅行で撮った写真を写真館で現像しました。

But Japanese allows some flexibility, for example:

• 写真館で旅行で撮った写真を現像しました。

This is still understandable, because:

• を marks the object
• で marks the setting/place

However, the original order sounds smoother and more neutral.

One important thing does not change:

• 旅行で撮った must stay directly before 写真, because it modifies 写真.

No. Standard Japanese is usually written without spaces.

So the sentence would normally appear as:

• 旅行で撮った写真を写真館で現像しました。

Spaces are often added in learning materials to make the parts easier to see.

So the spaced version is helpful for study, but not normal native writing.