Can the Canon 40D Record Video?
Quick answer: Not natively — the 40D predates video DSLRs entirely. But it was one of the first EOS cameras with Live View, and EOS Camera Movie Record turns that into a workaround: it captures the Live View stream over USB and records it on your computer as a 1024×680 MJPEG file at around 22 frames per second. Silent, but real moving pictures from a 2007 stills camera.
At a Glance
| Live View | Yes — one of the first EOS bodies to offer it |
| Native video recording | No — the 40D has no movie mode at all |
| Battery | BP-511A (dummy battery: ACK-E2 for long sessions) |
| USB connection | Mini-B USB cable |
| Magic Lantern support | Not supported on the 40D |
| EOS-MovRec capture | 1024×680 at around 22 fps, silent MJPEG AVI |
Why the 40D Cannot Record Video Natively
The EOS 40D was announced in 2007, a full year before the 5D Mark II introduced video to the EOS line. Its DIGIC III processor and sensor pipeline were engineered for one job: fast stills. Live View existed on the 40D, but strictly as a framing aid — for tripod work, macro focusing, and studio tethering — not as a motion pipeline.
Video needs two things the 40D’s hardware was never given: a sensor readout mode tuned for continuous frame rates and an encoder block to compress those frames in real time. Neither exists in this body, and no firmware update can add silicon. That is why the 40D will never grow a movie mode, whatever software you install on the camera.
The workaround works precisely because it sidesteps the missing encoder: the camera only has to do what it already does — output a Live View stream — while your computer does the recording.
How EOS Camera Movie Record Helps
EOS Camera Movie Record connects to the 40D over USB, switches on Live View, and records the incoming stream directly to disk on your PC: 1024×680 resolution at around 22 frames per second, saved as an MJPEG AVI file. It is modest by modern standards, but it is genuine video from a camera Canon never intended to shoot any.
Where the 40D shines in this role is long-lens and tripod work — the camera’s natural habitat. The 5x Live View magnification, captured through the tether, becomes a serious tool for planetary and lunar imaging through a telescope: the magnified crop acts like a long digital zoom, letting small targets fill the frame. A dusty 40D has a reason to come out.
It also works as a simple document or bench camera: point it at your workbench, record the Live View feed while you work, and you have hands-free process footage without buying anything new.
Honestly: the stream carries no audio, the frame rate is approximate, and fast motion will look choppy. For static or slow subjects — the Moon, a perched bird, a workbench — it is perfectly usable.
Setup Checklist
- Power: the BP-511A drains faster in Live View than in stills shooting; for sessions over half an hour, use the ACK-E2 dummy battery.
- Cable: Mini-B USB cable, direct to a rear USB port — no hubs. The 40D’s USB 2.0 link is the entire pipeline, so a flaky cable means dropped frames.
- Drivers (Windows 11): run Zadig to install the libusb driver first — the step-by-step is on the Windows 11 driver fix.
- Camera settings: enable Live View in the menus, set manual exposure and manual white balance so brightness and color do not drift mid-recording, and turn off auto power-off.
- Software: download the latest build from the download page, select the 40D, and verify the preview shows a smooth live image before recording.
- Framing: use the 5x magnification for critical focus on static subjects, then zoom back out to frame the shot before you start the capture.
What You Need
The 40D tethered kit is simple: an ACK-E2 dummy battery (or a fresh BP-511A) for power, a dependable Mini-B USB cable, a solid tripod — non-negotiable for Live View work — and a lens suited to your subject, such as the EF 50mm f/1.8 STM for bench and portrait-distance work or your longest telephoto for lunar shots.
Frequently Asked Questions
Can the Canon 40D record video by itself?
No. The 40D has no movie mode and no video encoder in hardware. The only way to get moving pictures out of it is the tethered workaround described on this page, which records the Live View stream on a connected computer.
What resolution and frame rate does the tethered capture produce?
1024×680 at around 22 frames per second, saved as a silent MJPEG AVI file. The frame rate is approximate — expect small variations rather than a locked broadcast rate.
Does it record audio?
No. The Live View stream carries picture only, so the resulting file has no sound track. Record audio separately with an external recorder and sync it in your editor.
Does Magic Lantern support the 40D?
No. The 40D was never supported by Magic Lantern, so in-camera video firmware is not an option. USB tethered capture is the available path.
Is the 40D any good for astrophotography video?
It has a genuine niche there. The 5x Live View magnification captured over USB gives you a tight crop ideal for the Moon and bright planets through a telescope, and the camera’s low used price makes it a cheap dedicated planetary cam.
Which battery lasts longest for tethered sessions?
Live View is power-hungry, so a standard BP-511A gives you well under an hour of continuous streaming. For anything longer, the ACK-E2 dummy battery running from mains power is the practical answer.