Amcrest IP3M-941 vs. Foscam R4

The Amcrest IP3M-941 and the Foscam R4 are the upgraded versions of the Amcrest IP2M-841 ProHD and the Foscam R2 that I compared here last Fall.  The comparison of these two cameras is very similar to my earlier one since these higher resolution models are based on the same basic hardware and software, but there are some very noticeable upgrades to these cameras, and some differences between them that might make it easy to choose one over the other for your specific situation.

I'll go over the differences between these two models below to help you decide between them, and share which one I might pick for different situations.  Keep reading to see which one might be right for you and your application.

Side by side comparison

Amcrest IP3M-941
Foscam R4


(2304x1296) 3MP 30 fps

2560×1440 4MP 25 fps or 2304×1296 3MP at 25 fps


4 mm, F2.2

4 mm, F2.1

Image Sensor

1/3" CMOS

1/3" CMOS

Field of View


74° diagonal 66° horizontal

Pan and Tilt Range

Should cover 360°

350° pan and 100° tilt

IR Night Vision

12 LEDs

Up to 32 feet (10 meters)

13 LEDs

Up to 33 feet (10 meters)

microSD card support

Yes, up to 64 GB

Yes, up to 128 GB

Two-way audio

Built-in mic & speaker

Built-in mic & speaker


Wired or 2.4 / 5 GHz WiFi

Wired or 2.4 GHz WiFi

External Alarm I/O



External mic & speaker

Yes, optional


Mounting bracket



WiFi Antenna




internal microSD card, FTP,  ONVIF NVR, or optional Amcrest cloud

internal microSD card, FTP, ONVIF NVR, or optional Foscam cloud

Motion Alerts



Colors Available

Black, White, Silver

Black, White


1 year

1 year




Cloud Recording

limited free plan with optional paid plans available

limited free plan with optional paid plans available


iOS, Android, Windows, Mac

iOS, Android, Windows, Mac


Image sensor and lense

The Amcrest IP3M-941 uses a 3 megapixel image sensor capable of 2304x1296 resolution along with an unspecified Ambarella processor.  I find claims of both 20 fps as well as 30 fps at maximum resolution for this model on the Amcrest web page.  I don't know why that is, but can only guess that it has had some improvements since it was initially released.

The Foscam R4 uses a 4 megapixel image sensor capable of 2560×1440 resolution along with an Ambarella S2L55M processor capable of 25 fps at maximum resolution.  The camera can also operate using 2304×1296 3MP resolution at 25 fps if you prefer.

Motorized pan and tilt

Like the similar 2MP models from these manufacturers, both of these cameras have motors to tilt the lens assembly up and down, as well as pan left and right.  This is remotely controlled through each cameras app, allowing you to change the direction the camera is pointing and look around the area where the camera is located.

Infrared night vision

Another feature both cameras have in common is the ability to see in complete darkness by using their built-in infrared LED lights.

The Amcrest IP3M-941 has 12 LEDs with a range of up to 10 meters / 32 feet.

The Foscam R4 has 13 LEDs, and depending on where you look on Foscam's website, you can find specs for up to 10 meters / 33 feet, as well as 8 meters / 26 feet.  I can only assume this is due to a change in design or materials at some point.

Tablet Screenshot of Amcrest and Foscam Apps


There are iOS and Android apps for both of these cameras, which I expect is how most people will be using them.  Both manufacturers have full-featured apps that can do the following.

  • View live video from the camera
  • Pan and tilt the camera lens to look around a room
  • Listen to live audio, as well as talk through the camera like an intercom
  • View recorded video
  • Get alerts when motion is detected
  • Configure recording and other camera features

Which one to choose?

Both Amcrest and Foscam are well-known and well-liked companies that have been making cameras for consumers for quite some time now.  Both of these models cost about the same and both get good reviews, and I think this is another case where you can't go wrong with either one.

Both manufacturers list some conflicting specifications such as the frames per second with the Amcrest, and the IR usable distance with the Foscam.  This is a fairly common thing to see from many manufacturers if you dig through all of their material available online, and I wouldn't worry at all about it.  This just happens as things change or are improved over the life pf a product and outdated material never gets updated or removed.

The Amcrest IP3M-941  is available in silver, and has optional external audio connections as well as 5 GHz wireless connectivity, so if you need those features you'd probably choose this camera.

The Foscam R4 has a higher resolution 4MP image sensor and officially supports 128 GB microSD cards, so this might be a better choice if that's important to you.

Leave a Comment:

brian says 2019-06-11


I see a lot of reviews mentioning these cameras with motion detection and notifications.
Most say they will send an email.

I’ve had several FosCams, which send email notifications WITH attached images from the motion that triggered notification. Thats great!

Now I accidentally bought a pair of crappy VstarCams, which also “have email notification” – but ONLY if you subscribe to their barn-door open lousy security webservices where I have to register my cams on their services.
All they do is then trigger motion and send me an email that “i have to log in and check whats going on” … WTF!??

Can you tell me if these Amcrest IP3M-941 is as clever as my very old trusty 640*480 cameras that could attach images of the motion? Or are they (Amcrest) also biul on the same meager firmware as the VstarCams and require us to use a chinese website to monitor our homes (and give external access to our intertnal networks) ?

Thanks in advance 🙂

    Steve says 2019-06-11

    Hi Brian,

    I know this Amcrest camera can send an email but I’m not sure if it can have an attached image or not. If you go to the Amcrest website you can find the long and detailed user manual, and the website should ask if you have any questions where you can chat with a live rep and ask them directly if it will do what you want.

    One thing I am sure of is that everything about Amcrest or Foscam software and hardware will be way more robust and secure than anything offered by Shenzhen VStarcam Technology Co., Ltd.


      Brian says 2019-06-13

      Thanks a bundle for responding! (y)
      I’ll go try my luck getting smarter at their website 🙂

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