Choosing the Best eufy SoloCam for Your Home

If the camera sits above a front door or on a porch, where anyone who matters walks right up to it, choose the eufy SoloCam E30. If it has to watch the far end of a driveway or a deep back yard after dark, choose the eufy SoloCam S340. Distance decides it. Below, we put the two side by side and show which spots around a house each one is built for, so you can match the camera to the place you already have in mind.

eufy SoloCam Series Overview

Both cameras come from the eufy SoloCam series, which exists for the spots a wired camera never reaches: no outlet nearby, no drilling through a wall, nobody on a ladder swapping batteries. Each one mounts on its own, charges off daylight, and turns to follow what it sees instead of holding a single fixed frame. That much is true of the E30 and the S340 alike, so the series name will not settle this for you. The spot you have in mind will: how far away things happen, and how much of them you still need to make out once it gets dark.

E30 vs S340: Which Should You Buy?

Start from the place, not the spec sheet. Find the line below that sounds most like your situation, and the camera on the right is the one to buy.

Two lines may well point in opposite directions — a long driveway that you also want recording around the clock. When that happens, it helps to see exactly what each camera trades away, so here is the full spec sheet side by side.

eufy S340 vs E30: Key Specs Comparison

Here is how the E30 and S340 compare on the specs that shape the choice.

That is the case on paper. Day to day, though, the two are built the same way and a lot of what you will actually touch is identical on both.

eufy SoloCam E30 vs S340: Similarities

Both cameras belong to the eufy SoloCam series and are designed for outdoor area surveillance, so they share quite a few similarities:

• PTZ Camera: Both cameras are PTZ models in the SoloCam series, making the installation process a breeze while ensuring there are no blind spots to miss any action within their range.
• Power Source: Both cameras come with a removable solar panel — the one on the SoloCam S340 is rated 2.2W — and either one can keep running on just two hours of direct sunlight each day. Plus, their backup battery can last for about three months, based on around 300 seconds of recording per day.
• Motion Detection:Both cameras detect motion on their own and start recording when something moves into view. The S340 uses a PIR sensor, and when you set the sensitivity to level 4, the S340 can detect motion from 20 to 26 feet during the day and 13 to 20 feet at night.
• AI-powered Smart Detection: With on-device AI, both cameras are equipped to detect humans and vehicles, which helps cut down on false alarms when they work solo. When connected to HomeBase™ 3, both models unlock the power of BionicMind AI, bringing in cool features like facial recognition.

• Storage Options: One of the standout features that eufy cameras offer is the local storage option, and both models keep footage on the camera itself — the S340 on 8 GB of built-in storage, the E30 on a microSD card of up to 128 GB. Either one can also record to HomeBase 3. This really helps users save on monthly cloud storage fees.
• Smart Home Integration: Integrate with Alexa and Google Assistant, users can control both devices via voice commands.

eufy E30 vs S340: How They Differ?

Where the two cameras part ways is the lens, the view after dark, and how much of the day each one records.

Resolution & Camera Lens

The E30 is equipped with just a single 2K wide-angle camera lens, whereas the S340 features a dual-lens setup that combines a 3K wide lens (2880×1620) with a 2K telephoto lens (2304×1296), resulting in sharper video footage.

That second lens is what the S340 draws on for its 8× hybrid zoom, and it holds detail out to about 40 ft (12 m), so a face or a car farther out still stays sharp when you zoom in. The E30 zooms digitally only: it enlarges the 2K image it already has, so the picture softens the further in you push.

• Key takeaway: eufy SoloCam S340 records in higher resolution and is better at picking up details.

Night Vision and Range

The E30 sees at night with infrared and has no built-in spotlight, so what it hands you after dark is black and white. The S340 pairs a spotlight with color night vision, so you see the actual color of a jacket or a car instead of a gray shape.

Distance also shrinks after dark. At its default sensitivity, the S340 picks up movement 13 to 20 feet away at night, compared with 20 to 26 feet during the day. Anything that moves within that range can set off its spotlight and built-in siren. That is the real difference at night: with the E30, you see what happened afterward; with the S340, the person out there knows right away that they have been seen.

• Key Takeaway: Only the S340 records in color at night, and only the S340 can light the scene itself.

24/7 Recording Option & Quick Focus Tap

This is where the E30 pulls ahead. Plugged into a power outlet, the E30 can record 24/7, so nothing that happens between two motion alerts goes missing. It just needs a microSD card when it runs on Wi-Fi, or a hard drive in the base when it is paired with HomeBase 3. The S340 works differently: it only records when it detects motion, and that stays the same even on HomeBase 3. The E30 is also quicker to use in the app. Instead of zooming in manually to find the detail you need, you tap the spot on the screen and the E30 turns its lens there. The S340 does not have this feature.

• Key Takeaway: The E30 has two unique features: 24/7 recording and quick focus tap.

When to Choose eufy E30 vs S340

Choose eufy SoloCam S340, if:

• You are covering a driveway or a deep yard and need the zoom plus color at night.
• You want a spotlight built into the camera instead of a separate floodlight.
• You would rather have 8 GB of storage in the camera than shop for an SD card.

Choose eufy SoloCam E30, if:

• The camera sits over a door, a porch, or a short path where people come close.
• You have an outlet at that spot and want it recording around the clock.
• You want the lower price of the two and do not mind adding a microSD card.
• You want Quick Focus Tap, so one tap on your phone screen swings the camera to that spot.

Put simply: near the door, the E30; out on the driveway, the S340.

Is 4K Resolution Necessary for a Security Camera?

No. For the distances most home cameras cover, 2K and 3K are sharp enough. Extra resolution mainly helps when you want to zoom into a small part of a very wide, fixed view and still keep the detail. Both SoloCams cut down on that need in a simpler way: they pan, tilt, and follow whatever moves, so the lens turns toward the person or car instead of leaving it as a small speck at the edge of the frame.

4K starts to pay off on a large property, where one camera has to watch a wide area without moving and still catch detail at the edges. That is the job of the eufyCam S4, which sits outside the SoloCam series.

eufyCam S4: Advanced Option Compared with S340 and E30

In addition to its 4K resolution upgrade, the new eufyCam S4 addresses a common PTZ camera limitation. Traditional PTZ cameras can leave previously monitored areas exposed while tracking motion, creating potential security gaps.

It is a wireless model that combines a bullet camera and a PTZ in one unit. Now you no longer have to choose between a bullet camera’s constant overview and a PTZ’s flexible tracking.

What Makes eufyCam S4 an Advanced Camera?

Here is what that bullet-plus-PTZ design adds over either SoloCam.

• Always On Watch: The upper bullet camera keeps an eye on your main entrance around the clock, while the lower PTZ camera ensures that no activity goes unnoticed.
• Smart Motion Tracking: The S4 has multiple tracking methods. When the upper bullet camera detects movement, the lower PTZ model automatically zooms in and follows the action. When more than one person comes into view, it zooms back out so they all stay in the frame.
• Accurate Motion Detection: With its dual sensors—radar and PIR—the S4 can detect movement from up to 40 feet away with the radar on its PTZ camera, and up to 30 feet with the PIR on its bullet camera.
• Solar Power Efficiency: Thanks to a 5.5W solar panel, just one hour of direct sunlight can power the camera for an entire day.

Key Specs at a Glance

If the S4 sounds closer to what your property needs, our eufyCam S4 buying guide covers it in more detail.

Final Thoughts

Whichever you pick, you are trading one thing for another. The E30 gives up zoom and color at night, and in return it can keep a full-day record anywhere you can run power to it. The S340 gives up that full-day record for sharper detail at a distance and a light that answers back after dark. If neither trade works because one camera has to cover a whole large property, that is when the eufyCam S4 comes in.

FAQ

Can the SoloCam S340 record continuously?

No, the SoloCam S340 cannot record continuously. It records only when it detects motion, and that stays the same even when it is connected to HomeBase 3. The SoloCam E30 and eufyCam S4 also run on batteries, but both can switch to 24/7 recording once they are connected to direct power, so either one is the better pick if you need a camera that never stops recording.

How big a difference is the zoom on the S340 in real life?

The S340’s 8× hybrid zoom is useful for covering large spaces, like a long driveway or yard, where details matter, and it holds detail out to about 40 ft (12 m). The E30’s digital zoom is fine for basic use, but doesn’t add extra clarity the way the S340 can.

Is the E30 easier to control than the S340?

Yes. With the E30’s Quick Focus Tap, you tap a spot on the screen and the camera pivots straight to it.

Do the eufy E30 and S340 work well when mounted high up?

Yes, the eufy E30 and S340 can still work when mounted high. However, for optimal performance, it's best to install the cameras at the height suggested in the user manual. Mounting too high makes faces and license plates look smaller in the frame, which matters most on the E30, since it relies on digital zoom.

What’s the difference between eufy E series and S series cameras?

The S series is eufy’s top tier, built around image quality and performance, while the E series focuses on reliable everyday security with long battery life and easy setup. These two SoloCams follow that split: the S340 is the more capable camera, and the E30 keeps things simple and costs less.

Which is better for a driveway, E30 or S340?

The S340 is the better choice for a driveway. Cars and people on a driveway usually stay farther from the camera, often after dark, and the S340 can zoom in on them and show a car’s color at night, which the E30 cannot. The E30 does better closer to the house, over a door or porch, where visitors walk right up to it.