EF lens controller and adapter for astronomy cameras released

There's a new product in the wild,  that makes using Canon EF and EF-S lenses with astronomy cameras a bit more straightforward. If you’ve ever hauled heavy focusers out under the sky and thought There’s got to be a better way, this is for folks like you.

Pinefeat has released the Canon EF / EF-S Lens Controller & Adapter for Astronomy Cameras. It lets you mount those Canon lenses on astronomy cameras, then control focus and aperture electronically through USB.

What you get

This isn’t just a fancy mount. It includes control over the lens’s internal motor for autofocus, plus aperture control, all managed over a USB connection. It works with your usual astrophotography software through ASCOM or INDI drivers, so the adapter fits into your workflow rather than forcing you to invent a new one.

It comes in different versions: you can pick backing for different back focus distances (for example 17.5 mm, 12.5 mm, 6.5 mm) and with or without internal filter support. There are different thread options (C-Mount, T-Mount, etc.) so you match it to your camera’s mount.

Who does this help?

If you already own Canon lenses with good glass and you like wide field work or want something more portable, this could simplify things. Instead of a heavy focuser you carry less, set up faster, do more imaging and less tweaking. It’s not perfect for every use, but for travel rigs, quick set-ups, or changing lenses it can be a big help.

What the adapter costs

For those in the US the Pinefeat adapter for astronomy cameras is listed at £89 in the UK store. That converts roughly into $110-$120 USD depending on exchange rate, shipping, and duties. You’ll need to factor in shipping from the UK (or whether Pinefeat offers US shipping), any import taxes, and possible customs fees.

So when you budget, plan on a bit more than the price tag in pounds. But even with those added costs it could still compare favorably with heavier focusers or more complex adapter rigs, especially when you buy once and use many times.

Things to keep in kind with the EF lens controller and adapter

Make sure you get the correct back focus and mount configuration so your optics stay aligned. Also check whether the version you pick includes internal filter support or if you need external filters. Power draw and driver setup will matter—some lenses respond better than others to electronic control. Expect a bit of setup time to get everything tuned.

Buy the adapter here