How can I wirelessly transfer Nikon D750 photos to a nearby PC during an event?

A practical setup is possible, but “instant” high-resolution wireless transfer at 50–150 m is difficult. Standard Wi‑Fi range is often around 100 m in ideal open conditions, and walls, people, and other obstacles reduce that. Large files will also slow shooting because the camera may be busy transferring.

From the answers, the main options are:

• Wi‑Fi SD card solutions (such as Eye‑Fi style cards), possibly combined with a Wi‑Fi extender/repeater for more range.
• A USB-to-router workflow using software like qDslrDashboard: camera → USB cable → mobile Wi‑Fi router → laptop/tablet running the software.
• Nikon/Windows tethering software such as Camera Control Pro or ControlMyNikon, if compatible with your workflow.

Be aware that some Nikon wireless/mobile apps may transfer only low-resolution JPEGs and can lock you out between shots while files transfer.

So the best answer is: use a dedicated wireless tether workflow with a router/access point and compatible tethering software, and test it carefully for your event distance and file sizes. If you need reliable high-res delivery over 150 m, plain Wi‑Fi may not be robust enough without extra network equipment.