What Lenses to Bring on a Four-Night Trip — Focal Lengths and How Many

One Lens or Two

For a four-night trip, one or two lenses is enough. Three or more becomes overpacking unless there is a clear purpose — separating architectural work from portraits, for example — that genuinely requires distinct optics.

If one lens, a standard focal length covers the most ground: 35mm to 50mm equivalent. Not because it handles every situation perfectly, but because it provides a consistent frame of reference. Food, alleys, people, distant views — all workable without switching.

If two lenses, a wide and a short telephoto pair well: roughly 28–35mm equivalent and 85–90mm equivalent. The wider lens handles street records and interiors; the longer one handles people and compression. The tradeoff is that carrying two lenses means constantly deciding which to use. If that decision feels engaging, two makes sense. If it feels like overhead, one is the better companion.

A zoom lens covering wide to short telephoto in one barrel is a rational single-lens solution. The image quality tradeoff is real but manageable. The tendency to fine-tune the focal length mid-scene is worth watching — setting a rough range in advance and committing to it makes the shooting faster.

Full Frame

A full-frame system is unmatched on sensor performance, but the weight is honest: body alone runs 700–900g, and a standard prime takes the total past 1kg. That weight is livable for one day of shooting; five days of city walking is a different negotiation.

One lens on full frame: a lightweight 35mm f/2 or 50mm f/1.8 keeps the total system around 1.0–1.2kg. That sits near the upper end of comfortable for extended carries but remains manageable.

Two lenses: 28mm and 85mm, or 35mm and 85mm. The 85mm on full frame renders background separation cleanly — good for market portraits and textured scenes that benefit from compression.

A pancake-style 28mm f/2.8, where available, significantly reduces profile. Several Sony and Nikon mirrorless systems include compact wides that change how the kit feels walking narrow streets.

One thing worth naming: choosing to travel with a full-frame system shifts the trip slightly toward photography as the purpose. That is not a problem — it is useful to be honest about it. The weight of the gear tends to mirror the weight of the commitment.

Micro Four Thirds

Micro Four Thirds is a strong system for travel. The smaller sensor means smaller bodies and smaller lenses, and the combined effect is that the gear fades into the background. You carry it without thinking about it.

The 2× crop factor means: 17mm is equivalent to 34mm full frame, 25mm to 50mm, 45mm to 90mm.

One lens: 17mm f/1.8 (34mm equivalent) or 25mm f/1.8 (50mm equivalent) — each around 150–180g. With a body, the total stays near 600–700g. That is light enough to carry all day without noticing.

Two lenses: the combination of 17mm and 45mm totals around 350g, comparable to a single full-frame prime. One lens can stay in a jacket pocket without any particular inconvenience.

The tradeoff versus full frame is visible in low light and in shallow depth of field. For the bright outdoor conditions that dominate most travel days, this gap is small enough to set aside.

A Compact Camera as a Secondary

When the main camera is in the bag, moments pass. A corner table in a restaurant, something in the street, a view through a train window — by the time the camera is out, the moment has its own ending.

A compact camera kept in a pocket or on a strap occupies a different time horizon from the main system. It is not backup; it operates on a different rhythm. Small cameras invite a faster, quieter relationship with the scene.

The focal length should differ from the main camera deliberately. If the main is 50mm equivalent, a compact at 28mm equivalent creates a clear division of purpose. Two systems at the same focal length reduce the motivation to reach for the second one.

Fixed focal-length compacts suit this role well — a zoom adds the same focal-length hesitation you already carry with the main system. The Ricoh GR line at 28mm, the Fujifilm X100 series at 35mm: take it out, shoot. Nothing to adjust first.

The weight addition is worth calculating honestly. Full frame plus compact can push total carry weight above 1.5kg. Micro Four Thirds plus compact usually lands near 1.0kg. Over five days, the gap in how the body feels is larger than the numbers suggest.

The iPhone Is Always There

Almost no one travels without an iPhone now.

The camera in your pocket handles wide (roughly 24mm equivalent), standard (roughly 48mm equivalent), and telephoto depending on the model. It is always accessible. It does not require a bag.

This is not an argument that a dedicated camera is unnecessary. The iPhone and a dedicated camera are different instruments with different qualities of output and different physical relationships to the act of shooting. The iPhone handles records; the dedicated camera handles intention.

What the iPhone's constant presence does change is the justification for a compact camera. If the compact produces results you cannot distinguish from iPhone output, there is no practical reason to carry both. The compact earns its place when it delivers something optically or physically different: a rendering quality, a tonal character, a shutter feel that the phone does not replicate.

Said plainly: if the compact and the iPhone feel equivalent to you on a given trip, leave the compact home.

Summary: Lens Combinations and Weight

These are estimates. Actual figures depend on specific bodies and lenses.

What matters at the end of the trip is not "I wish I had brought one more lens" but "I used what I brought." The way to get there is not to carry everything you could manage but to carry what you will actually reach for. Comfortable weight tends to produce more photographs than capable weight.

The night before departure: open the bag, take one lens out, and ask whether the trip still works. If yes, that lens might not have needed to come.