Support

What you need

• An iPhone with iOS 17 or later.
• Nikon D4: an Ethernet cable, plus a USB-C Ethernet adapter for the iPhone, or the Windowlight box next to the camera for Wi-Fi.
• OM System OM-1: a USB-C data cable. Charge-only cables don't work: the camera simply never shows up.

Quick fixes

The camera won't connect

Make sure it is on, awake and has charge. Only one app can talk to the camera at a time, so close any other camera app or computer first. After a disconnect the camera needs about 15 seconds before it accepts a new connection; waiting works better than retrying quickly.

“The camera is in use”

Another phone or browser still holds the camera. Wait three minutes for it to let go, or tap Take over.

Still stuck after a crash

The camera may think the old connection is still open. Turn the camera's network setting off and on (D4), or switch the camera off, unplug the cable, switch it back on and plug it in again (OM-1).

Live view won't start

Common reasons: a low battery, no memory card, a shot still being saved, or the aperture set on the lens ring. Charge or swap the battery, wait a moment after a shot, and set the lens ring to its smallest aperture.

The card looks empty on the Shoot page

The D4 hides its cards while it is being remote-controlled. Open the Viewer from the Shoot page's button and they appear.

Zoomed live view freezes

Windowlight usually fixes this itself within a few seconds. If not, tap Fit, or stop and start live view.

A download stops short

Try again when the camera is idle (not shooting or in live view), and split very large selections.

Contact

Something else? Write to support@windowlight.app with your camera model, your iPhone and iOS version, and what you saw.